Iteration 0 — served by liquid/lfm-2.5-2.6b:free — 18.9s selected — this is what aired

This evening and tonight remain overcast at 18 degrees. Tomorrow brings a warm 20 degrees followed by an overcast evening at 18 degrees. Right now at Great Marlow School, it's overcast and 18 degrees.

• hard degrees_repetition: "degrees" used more than once in one sentence: "Tomorrow brings a warm 20 degrees followed by an overcast evening at 18 degrees." — only the first figure in a sentence should say "degrees".
• soft word_count: Forecast is 34 words — aim for roughly 60-95 words for a ~30-35s read.

Iteration 1 — served by gemini-2.5-flash-lite — 5.8s

This evening and tonight remain overcast, staying cool at 18 degrees. Tomorrow morning will also be overcast, with temperatures around 16 degrees. But then, the afternoon is looking much brighter, with plenty of sunshine and a warm 20 degrees, though it might feel a little cooler. As we head into Thursday evening, it'll turn overcast again, with temperatures dropping to 18 degrees. Right now at Great Marlow School, it's overcast and 18 degrees.

• hard temp_figure_count: Found 4 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.
• hard day_name: Day name "Thursday" used — never use day names for today/tomorrow.
• hard temperature_register_mismatch: "cool" used to describe today overnight, but the summary labels that period "warm": "This evening and tonight remain overcast, staying cool at 18 degrees." — the word contradicts the actual temperature register for that period instead of just varying the language.

Iteration 2 — served by gemini-2.5-flash-lite — 5.8s

This evening and tonight remain overcast, staying cool at 18 degrees. Tomorrow morning will be overcast too, with temperatures around 16 degrees. But then, the afternoon is looking much brighter, with plenty of sunshine and a warm 20 degrees, though it might feel a touch cooler at 17. As we head into Thursday evening, it'll turn overcast again, dropping to 18 degrees, feeling more like 14. Right now at Great Marlow School, it's overcast and 18 degrees.

• hard temp_figure_count: Found 6 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.
• hard day_name: Day name "Thursday" used — never use day names for today/tomorrow.
• hard temperature_register_mismatch: "cool" used to describe today overnight, but the summary labels that period "warm": "This evening and tonight remain overcast, staying cool at 18 degrees." — the word contradicts the actual temperature register for that period instead of just varying the language.

Iteration 0 — served by gemini-2.5-flash-lite (fallback) — 87.9s

This afternoon will be partly cloudy with a cool feel. This evening stays partly cloudy, with temperatures dropping to around 18 degrees. Overnight, it will become overcast, with temperatures sitting at a warmer than usual 14 degrees for this time of year. Tomorrow morning brings overcast skies and a chance of rain, feeling cool. By tomorrow afternoon, however, it should brighten up considerably with mainly clear skies and a warmer feel, reaching around 20 degrees, before becoming overcast again tomorrow evening. Right now in Marlow, it's partly cloudy and 19 degrees.

• hard opening_period: The first period listed in the summary is TODAY Evening — the forecast must open with "this evening", not skip ahead to a later period.

Iteration 1 — served by gemini-2.5-flash-lite — 11.7s selected — this is what aired

This evening will be partly cloudy with a cool feel. Overnight, it will become overcast, with temperatures sitting at a warmer than usual 14 degrees for this time of year. Tomorrow morning brings overcast skies and a chance of rain, feeling cool. By tomorrow afternoon, however, it should brighten up considerably with mainly clear skies and a warmer feel, reaching around 20 degrees, before becoming overcast again tomorrow evening. Right now in Marlow, it's partly cloudy and 19 degrees.

• soft llm_critic: The phrase "warmer than usual 14 degrees for this time of year" redundantly compares a specific temperature to both a typical temperature ("warmer than usual") and a seasonal reference ("for this time of year").
• soft llm_critic: The sentence "By tomorrow afternoon, however, it should brighten up considerably with mainly clear skies and a warmer feel, reaching around 20 degrees, before becoming overcast again tomorrow evening" doesn't logically connect the "warmer feel" to the temperature of "around 20 degrees" when the "feels like" temperature is stated as 16°C, which is described as "cool" earlier in the forecast.
• soft llm_critic: The phrase "temperatures sitting at a warmer than usual 14 degrees for this time of year" describes the temperature as actively "sitting" rather than simply being a certain temperature.

Iteration 2 — served by gemini-2.5-flash-lite — 11.3s

This evening will be partly cloudy with a cool feel. Overnight, it will become overcast, with temperatures at 14 degrees, which is warmer than usual for this time of year. By tomorrow afternoon, however, it should brighten up considerably with mainly clear skies and a warmer feel, reaching around 20 degrees, before becoming overcast again tomorrow evening. Right now in Marlow, it's partly cloudy and 19 degrees.

• soft llm_critic: The forecast is conditions-led.
• soft llm_critic: The move from current conditions to the first forecast period is not described as a change.
• soft llm_critic: There is no theatrical or purple language.
• soft llm_critic: There is no redundant or illogical phrasing.
• soft llm_critic: There are no parts of the forecast that fail to make logical sense.
• soft llm_critic: The script does not describe the weather as being actively maintained.
• soft llm_critic: There are no genuine grammatical errors.

Iteration 3 — served by gemini-2.5-flash-lite — 11.3s

This evening will be partly cloudy with a cool feel. Overnight, it will become overcast, with temperatures at a warmer than usual 14 degrees. Tomorrow morning brings overcast skies and a chance of rain, feeling cool. By tomorrow afternoon, however, it should brighten up considerably with mainly clear skies and a warmer feel, reaching around 20 degrees, before becoming overcast again tomorrow evening. Right now in Marlow, it's partly cloudy and 19 degrees.

• soft llm_critic: The phrase "warm for an overnight low" in the script contradicts the statement that it is "overcast, 14°C" which is described as "cool" in the summary.
• soft llm_critic: The script states "temperatures at a warmer than usual 14 degrees" which contradicts the summary's description of 14°C as "warm for an overnight low".
• soft llm_critic: The script states "temperatures at a warmer than usual 14 degrees" which contradicts the summary's description of 14°C as "warm for an overnight low".

Iteration 0 — served by gemini-2.5-flash-lite (fallback) — 87.8s selected — this is what aired

Tonight we're looking at overcast skies with temperatures around 14 degrees, feeling a little warm for this time of year. Tomorrow morning starts overcast with rain expected, but things should clear up for a mainly clear afternoon, reaching a pleasant 20 degrees, though it will feel cooler in the breeze. Right now at the Marlow FM studios, it's partly cloudy and 19 degrees.

• hard opening_period: The first period listed in the summary is TODAY Evening — the forecast must open with "this evening", not skip ahead to a later period.

Iteration 1 — served by gemini-2.5-flash-lite — 5.7s

This evening we're looking at overcast skies with temperatures around 18 degrees, and overnight it'll be overcast with temperatures around 14 degrees, feeling a little warm for this time of year. Tomorrow morning starts overcast with rain expected, but things should clear up for a mainly clear afternoon, reaching a pleasant 20 degrees, though it will feel cooler in the breeze. Right now at the Marlow FM studios, it's partly cloudy and 19 degrees.

• hard degrees_repetition: "degrees" used more than once in one sentence: "This evening we're looking at overcast skies with temperatures around 18 degrees, and overnight it'll be overcast with temperatures around 14 degrees, feeling a little warm for this time of year." — only the first figure in a sentence should say "degrees".

Iteration 2 — served by gemini-2.5-flash-lite — 5.7s

This evening we're looking at overcast skies with temperatures around 18 degrees, and overnight it'll be overcast with temperatures around 14 degrees, feeling a little warm for this time of year. Tomorrow morning starts overcast with rain expected, but things should clear up for a mainly clear afternoon, reaching a pleasant 20 degrees, though it will feel cooler in the breeze. Right now at the Marlow FM studios, it's partly cloudy and 19 degrees.

• hard degrees_repetition: "degrees" used more than once in one sentence: "This evening we're looking at overcast skies with temperatures around 18 degrees, and overnight it'll be overcast with temperatures around 14 degrees, feeling a little warm for this time of year." — only the first figure in a sentence should say "degrees".

Iteration 0 — served by poolside/laguna-xs-2.1:free — 33.7s

This afternoon it's partly cloudy and 19 degrees with a cool feel to it. The evening will turn overcast with temperatures easing to 18 degrees, then a warm 14 degrees overnight for September. Tomorrow brings overcast skies and rain expected by morning with 76 per cent chance, warming to a pleasant 20 degrees in the afternoon under mainly clear skies. Right now at the Marlow FM studios, it's partly cloudy and 19 degrees.

• hard temp_figure_count: Found 4 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.
• hard degrees_repetition: "degrees" used more than once in one sentence: "The evening will turn overcast with temperatures easing to 18 degrees, then a warm 14 degrees overnight for September." — only the first figure in a sentence should say "degrees".

Iteration 1 — served by gemini-2.5-flash-lite — 5.7s selected — this is what aired

This afternoon it's partly cloudy and 19 degrees with a cool feel to it. The evening will turn overcast with temperatures easing to 18, then a warm 14 overnight for September. Tomorrow brings overcast skies and rain expected by morning with 76 per cent chance, warming to a pleasant 20 degrees in the afternoon under mainly clear skies. Right now at the Marlow FM studios, it's partly cloudy and 19 degrees.

• hard temp_figure_count: Found 4 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.

Iteration 2 — served by gemini-2.5-flash-lite — 5.7s

This afternoon it's partly cloudy and 19 degrees with a cool feel to it. The evening will turn overcast with temperatures easing to 18, then a warm 14 overnight for September. Tomorrow brings overcast skies and rain expected by morning with 76 per cent chance, warming to a pleasant 20 degrees in the afternoon under mainly clear skies. Right now at the Marlow FM studios, it's partly cloudy and 19 degrees.

• hard temp_figure_count: Found 4 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.

Iteration 3 — served by gemini-2.5-flash-lite — 5.6s

This afternoon it's partly cloudy and 19 degrees with a cool feel to it. The evening will turn overcast with temperatures easing to 18, then a warm 14 overnight for September. Tomorrow brings overcast skies and rain expected by morning with 76 per cent chance, warming to a pleasant 20 degrees in the afternoon under mainly clear skies. Right now at the Marlow FM studios, it's partly cloudy and 19 degrees.

• hard temp_figure_count: Found 4 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.

Iteration 0 — served by liquid/lfm-2.5-2.6b:free — 83.3s

This afternoon stays partly cloudy with nineteen degrees, followed by cooler evening conditions throughout. The morning brings rain, then overcast conditions take hold for the afternoon before the sky finally clears. The overnight low remains warm at thirteen degrees, marking a warmer night before tomorrow. Right now at Great Marlow School, it's partly cloudy and 18 degrees.

• soft llm_critic: The script wrongly describes the move from "current conditions" to the first forecast period as "cooler evening conditions throughout" when the temperature only drops from 19°C to 17°C.
• soft llm_critic: The script uses theatrical language by describing the overnight low as "warm" when it is stated as 13°C which is not inherently warm for an overnight low.
• soft llm_critic: The script uses redundant phrasing by saying "The overnight low remains warm at thirteen degrees, marking a warmer night before tomorrow" as it states the same fact twice.
• soft llm_critic: The script uses illogical phrasing by stating "The morning brings rain, then overcast conditions take hold for the afternoon" when the current conditions are partly cloudy.
• soft llm_critic: The script uses illogical phrasing by stating "The overnight low remains warm at thirteen degrees, marking a warmer night before tomorrow" as 13°C is described as "cool" for the morning and afternoon of the next day.
• soft llm_critic: The script uses the word "stays" which describes the weather as actively maintained.
• soft llm_critic: The script uses the word "remains" which describes the weather as actively maintained.
• soft llm_critic: The script uses the word "take hold" which describes the weather as actively maintained.
• soft llm_critic: The script uses the word "clears" which describes the weather as actively maintained.

Iteration 1 — served by gemini-2.5-flash-lite — 11.8s

This afternoon is partly cloudy with nineteen degrees, followed by cooler evening conditions. The morning brings rain, then overcast conditions are expected for the afternoon before the sky finally becomes clear. The overnight low is thirteen degrees, marking a warmer night before tomorrow. Right now at Great Marlow School, it's partly cloudy and 18 degrees.

• soft llm_critic: The script wrongly describes the move from "current conditions" to the first forecast period as "cooler evening conditions" when the temperatures only drop by 2°C, which is normal daily cooling, not a change in weather type.
• soft llm_critic: The script uses "marking a warmer night" which is a contradiction as the overnight low of 13°C is described as "warm for an overnight low" in the summary, not a general "warmer night".
• soft llm_critic: The script uses the theatrical phrase "sky finally becomes clear" instead of a grounded tone.
• soft llm_critic: The script uses "warmer night before tomorrow" which is redundant phrasing by comparing "warmer" to "tomorrow" without a clear point of reference.
• soft llm_critic: The script uses "morning brings rain" which is a phrasing that makes it sound like the weather is actively performing an action rather than simply being described.
• soft llm_critic: The script uses "followed by cooler evening conditions" and then later "The overnight low is thirteen degrees, marking a warmer night before tomorrow", which are contradictory statements about the overall temperature trend.

Iteration 2 — served by gemini-2.5-flash-lite — 11.5s selected — this is what aired

This afternoon is partly cloudy with nineteen degrees, followed by evening conditions. The morning brings rain, then overcast conditions are expected for the afternoon before the sky becomes clear. The overnight low is thirteen degrees, a warm figure for an overnight low. Right now at Great Marlow School, it's partly cloudy and 18 degrees.

• soft word_count: Forecast is 54 words — aim for roughly 60-95 words for a ~30-35s read.
• soft llm_critic: The script describes the move from current conditions to the first forecast period as a change, even though the summary shows normal daily warming.
• soft llm_critic: The script uses purple language ("warm figure") instead of a grounded local-presenter tone.
• soft llm_critic: The script contains redundant or illogical phrasing ("a warm figure for an overnight low").
• soft llm_critic: The script contains a genuine grammatical error: "The morning brings rain, then overcast conditions are expected for the afternoon before the sky becomes clear." This sentence structure is not standard.

Iteration 3 — served by gemini-2.5-flash-lite — 5.9s

This afternoon is partly cloudy with nineteen degrees, feeling a bit cooler at sixteen. The evening stays partly cloudy, and overnight we'll see overcast skies with a thirteen-degree low, which is quite mild for this time of year. Tomorrow morning, expect overcast conditions with a good chance of rain, around seventy-six percent, and it'll be sixteen degrees. The afternoon will be overcast too, feeling like sixteen degrees, but the evening should clear up nicely to seventeen degrees. Right now at Great Marlow School, it's partly cloudy and 18 degrees.

• hard temp_figure_count: Found 6 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.
• hard degrees_repetition: "degrees" used more than once in one sentence: "The afternoon will be overcast too, feeling like sixteen degrees, but the evening should clear up nicely to seventeen degrees." — only the first figure in a sentence should say "degrees".
• soft summer_mild: "mild" used in a summer (May-Sep) forecast — only correct if this period is genuinely cooler than usual for the time of year (the summer mirror of "mild" meaning warmer-than-usual in winter); if it's just describing pleasant warmth, it reads backwards.

Iteration 4 — served by gemini-2.5-flash-lite — 6.5s

This afternoon is partly cloudy with nineteen degrees, feeling a bit cooler at sixteen, and we've got a moderate UV index. The evening stays partly cloudy, dropping to seventeen degrees. Overnight, it'll be overcast with a low of thirteen degrees, which is quite mild for this time of year. Tomorrow morning, expect overcast skies and a good chance of rain, around seventy-six percent, with temperatures at sixteen degrees. The afternoon will be overcast again, feeling like sixteen degrees with a moderate UV index. But then, the evening looks lovely with clear skies and seventeen degrees, though it'll feel a bit cooler at fourteen. Right now at Great Marlow School, it's partly cloudy and 18 degrees.

• hard temp_figure_count: Found 8 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.
• soft word_count: Forecast is 115 words — aim for roughly 60-95 words for a ~30-35s read.
• soft summer_mild: "mild" used in a summer (May-Sep) forecast — only correct if this period is genuinely cooler than usual for the time of year (the summer mirror of "mild" meaning warmer-than-usual in winter); if it's just describing pleasant warmth, it reads backwards.

Iteration 0 — served by inclusionai/ling-3.0-flash-sante:free — 75.7s

This afternoon will be partly cloudy with a temperature reaching 19 degrees, feeling fresh. This evening stays similar with partly cloudy skies. Overnight it turns overcast with a mild low of 13 degrees — warmer than typical for this time of year. Tomorrow morning brings overcast skies with rain expected. Tomorrow afternoon stays overcast, then clearing by tomorrow evening. Right now in Marlow, it's overcast and 18 degrees.

• soft summer_mild: "mild" used in a summer (May-Sep) forecast — only correct if this period is genuinely cooler than usual for the time of year (the summer mirror of "mild" meaning warmer-than-usual in winter); if it's just describing pleasant warmth, it reads backwards.
• soft llm_critic: The forecast conditions are not described as conditions-led.
• soft llm_critic: The move from current conditions to the first forecast period is wrongly described as "turns" when it's normal daily warming.
• soft llm_critic: The phrase "warmer than typical for this time of year" unnecessarily names a specific month and also refers to "this time of year".
• soft llm_critic: The phrase "feeling fresh" is theatrical language.
• soft llm_critic: The phrase "stays similar" is redundant.

Iteration 1 — served by gemini-2.5-flash-lite — 11.6s selected — this is what aired

This afternoon will be partly cloudy with a temperature reaching 19 degrees, feeling a bit cool. This evening stays partly cloudy. Overnight it becomes overcast with a low of 13 degrees — a bit warmer than usual for this time of year. Tomorrow morning brings overcast skies with rain expected. Tomorrow afternoon stays overcast, then clearing by tomorrow evening. Right now in Marlow, it's overcast and 18 degrees.

• soft llm_critic: The script wrongly describes the move from current conditions to the first forecast period as "a bit warmer than usual for this time of year" when it's just normal daily cooling.
• soft llm_critic: The script uses "cool" to describe 18°C and 19°C which is not a grounded local presenter tone.

Iteration 2 — served by gemini-2.5-flash-lite — 5.6s

This afternoon will be partly cloudy with a temperature reaching 19 degrees, feeling a bit on the mild side. This evening stays partly cloudy. Overnight it becomes overcast with a low of 13 degrees. Tomorrow morning brings overcast skies with rain expected. Tomorrow afternoon stays overcast, then clearing by tomorrow evening. Right now in Marlow, it's overcast and 18 degrees.

• soft summer_mild: "mild" used in a summer (May-Sep) forecast — only correct if this period is genuinely cooler than usual for the time of year (the summer mirror of "mild" meaning warmer-than-usual in winter); if it's just describing pleasant warmth, it reads backwards.
• hard temperature_register_mismatch: "mild" used to describe today afternoon, but the summary labels that period "cool": "This afternoon will be partly cloudy with a temperature reaching 19 degrees, feeling a bit on the mild side." — the word contradicts the actual temperature register for that period instead of just varying the language.

Iteration 3 — served by gemini-2.5-flash-lite — 5.7s

This afternoon will be partly cloudy with a temperature reaching 19 degrees, feeling a bit on the mild side. This evening stays partly cloudy. Overnight it becomes overcast with a low of 13 degrees. Tomorrow morning brings overcast skies with rain expected. Tomorrow afternoon stays overcast, then clearing by tomorrow evening. Right now in Marlow, it's overcast and 18 degrees.

• soft summer_mild: "mild" used in a summer (May-Sep) forecast — only correct if this period is genuinely cooler than usual for the time of year (the summer mirror of "mild" meaning warmer-than-usual in winter); if it's just describing pleasant warmth, it reads backwards.
• hard temperature_register_mismatch: "mild" used to describe today afternoon, but the summary labels that period "cool": "This afternoon will be partly cloudy with a temperature reaching 19 degrees, feeling a bit on the mild side." — the word contradicts the actual temperature register for that period instead of just varying the language.

Iteration 0 — served by nex-agi/nex-n2.5-pro:free — 16.5s selected — this is what aired

This afternoon, it’ll be partly cloudy, with a high of around 18 degrees. It’ll cloud over this evening and stay overcast overnight, with a low near 13 degrees, so not too cold. Tomorrow morning brings overcast skies and rain is expected. Tomorrow afternoon is overcast and a touch warmer at 19 degrees, before clear skies tomorrow evening. Right now at the Marlow FM studios, it's overcast and 17 degrees.

• hard temperature_register_mismatch: "cold" used to describe today overnight, but the summary labels that period "warm": "It’ll cloud over this evening and stay overcast overnight, with a low near 13 degrees, so not too cold." — the word contradicts the actual temperature register for that period instead of just varying the language.

Iteration 1 — served by gemini-2.5-flash-lite — 5.7s

This afternoon, it’ll be partly cloudy, with a high of around 18 degrees. It’ll cloud over this evening and stay overcast overnight, with a low near 13 degrees, so not too chilly. Tomorrow morning brings overcast skies and rain is expected. Tomorrow afternoon is overcast and a touch warmer at 19 degrees, before clear skies tomorrow evening. Right now at the Marlow FM studios, it's overcast and 17 degrees.

• hard temperature_register_mismatch: "chilly" used to describe today overnight, but the summary labels that period "warm": "It’ll cloud over this evening and stay overcast overnight, with a low near 13 degrees, so not too chilly." — the word contradicts the actual temperature register for that period instead of just varying the language.

Iteration 2 — served by gemini-2.5-flash-lite — 5.6s

This afternoon, it’ll be partly cloudy, with a high of around 18 degrees. It’ll cloud over this evening and stay overcast overnight, with a low near 13 degrees, so not too chilly. Tomorrow morning brings overcast skies and rain is expected. Tomorrow afternoon is overcast and a touch warmer at 19 degrees, before clear skies tomorrow evening. Right now at the Marlow FM studios, it's overcast and 17 degrees.

• hard temperature_register_mismatch: "chilly" used to describe today overnight, but the summary labels that period "warm": "It’ll cloud over this evening and stay overcast overnight, with a low near 13 degrees, so not too chilly." — the word contradicts the actual temperature register for that period instead of just varying the language.

Iteration 0 — served by gemini-2.5-flash-lite (fallback) — 87.9s

This afternoon will be overcast and cool, with temperatures reaching 18 degrees. It'll stay overcast this evening, remaining cool at 17 degrees, before an overnight low of 13 degrees, which will feel warm for the time of year. Tomorrow starts overcast with rain expected in the morning, and temperatures will be cool at 17 degrees. The afternoon will remain overcast but clear skies are forecast for tomorrow evening, feeling a little cooler at 14 degrees. Right now in Marlow, it's partly cloudy and 16 degrees.

• hard temp_figure_count: Found 5 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.
• hard temp_word_repetition: Temperature-register word "cool" (or a variant) used 4 times (cool, cooler) — vary the language instead of repeating.
• hard degrees_repetition: "degrees" used more than once in one sentence: "It'll stay overcast this evening, remaining cool at 17 degrees, before an overnight low of 13 degrees, which will feel warm for the time of year." — only the first figure in a sentence should say "degrees".
• hard temperature_register_mismatch: "cool" used to describe today overnight, but the summary labels that period "warm": "It'll stay overcast this evening, remaining cool at 17 degrees, before an overnight low of 13 degrees, which will feel warm for the time of year." — the word contradicts the actual temperature register for that period instead of just varying the language.

Iteration 1 — served by gemini-2.5-flash-lite — 5.8s

This afternoon will be overcast and mild, with temperatures reaching 18 degrees. It'll stay overcast this evening, remaining at 17 degrees, before an overnight low of 13 degrees, which will feel warm for the time of year. Tomorrow starts overcast with rain expected in the morning, and temperatures will be around 17 degrees. The afternoon will remain overcast but clear skies are forecast for tomorrow evening, feeling a little chilly at 14 degrees. Right now in Marlow, it's partly cloudy and 16 degrees.

• hard temp_figure_count: Found 5 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.
• hard degrees_repetition: "degrees" used more than once in one sentence: "It'll stay overcast this evening, remaining at 17 degrees, before an overnight low of 13 degrees, which will feel warm for the time of year." — only the first figure in a sentence should say "degrees".
• soft summer_mild: "mild" used in a summer (May-Sep) forecast — only correct if this period is genuinely cooler than usual for the time of year (the summer mirror of "mild" meaning warmer-than-usual in winter); if it's just describing pleasant warmth, it reads backwards.
• hard temperature_register_mismatch: "mild" used to describe today afternoon, but the summary labels that period "cool": "This afternoon will be overcast and mild, with temperatures reaching 18 degrees." — the word contradicts the actual temperature register for that period instead of just varying the language.

Iteration 2 — served by gemini-2.5-flash-lite — 5.6s selected — this is what aired

This afternoon will be overcast and cool, with temperatures reaching 18. It'll stay overcast this evening, remaining at 17, before an overnight low of 13, which will feel warm for the time of year. Tomorrow starts overcast with rain expected in the morning, and temperatures will be around 17. The afternoon will remain overcast but clear skies are forecast for tomorrow evening, feeling a little chilly at 14. Right now in Marlow, it's partly cloudy and 16 degrees.

• hard temp_figure_count: Found 5 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.

Iteration 3 — served by gemini-2.5-flash-lite — 5.6s

This afternoon will be overcast and cool, with temperatures reaching 18. It'll stay overcast this evening, remaining at 17, before an overnight low of 13, which will feel warm for the time of year. Tomorrow starts overcast with rain expected in the morning, and temperatures will be around 17. The afternoon will remain overcast but clear skies are forecast for tomorrow evening, feeling a little chilly at 14. Right now in Marlow, it's partly cloudy and 16 degrees.

• hard temp_figure_count: Found 5 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.

Iteration 4 — served by gemini-2.5-flash-lite — 5.7s

This afternoon will be overcast and cool, with temperatures reaching 18. It'll stay overcast this evening, remaining at 17, before an overnight low of 13, which will feel warm for the time of year. Tomorrow starts overcast with rain expected in the morning, and temperatures will be around 17. The afternoon will remain overcast but clear skies are forecast for tomorrow evening, feeling a little chilly at 14. Right now in Marlow, it's partly cloudy and 16 degrees.

• hard temp_figure_count: Found 5 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.

Iteration 0 — served by gemini-2.5-flash-lite (fallback) — 94.2s

This afternoon will be overcast, feeling a touch cooler than the morning, with temperatures around 19 degrees. As we move into the evening, it will stay overcast and around 17 degrees. Overnight, the clouds will remain but the temperature will drop to a mild 13 degrees. Tomorrow morning starts overcast with rain expected, before clearing to clearer skies tomorrow evening. Right now at Great Marlow School, it's mainly clear and 15 degrees.

• soft summer_mild: "mild" used in a summer (May-Sep) forecast — only correct if this period is genuinely cooler than usual for the time of year (the summer mirror of "mild" meaning warmer-than-usual in winter); if it's just describing pleasant warmth, it reads backwards.
• soft llm_critic: The script wrongly describes the move from current conditions to the first forecast period as "feeling a touch cooler than the morning", even though the summary shows normal daily warming.
• soft llm_critic: The phrase "feeling a touch cooler than the morning" uses purple language.
• soft llm_critic: The script uses redundant phrasing by stating the evening temperature is "around 17 degrees" after saying the afternoon is "around 19 degrees".
• soft llm_critic: The script uses the phrase "drop to a mild 13 degrees" and "warm for an overnight low" for the same temperature, which is contradictory.

Iteration 1 — served by gemini-2.5-flash-lite — 11.9s

This afternoon will be overcast, feeling a touch warmer than the morning, with temperatures around 19 degrees. As we move into the evening, it will stay overcast and 17 degrees. Overnight, the clouds will remain but the temperature will drop to a pleasant 13 degrees. Tomorrow morning starts overcast with rain expected, before clearing to clearer skies tomorrow evening. Right now at Great Marlow School, it's mainly clear and 15 degrees.

• soft llm_critic: The script wrongly describes the move from current conditions to today's forecast as "feeling a touch warmer than the morning", even though the summary shows normal daily warming.
• soft llm_critic: The script uses the theatrical language "pleasant" to describe an overnight low of 13 degrees, which is not warranted by the conditions.
• soft llm_critic: The script uses the phrase "clearing to clearer skies" which is redundant.

Iteration 2 — served by gemini-2.5-flash-lite — 11.6s selected — this is what aired

This afternoon will be overcast, with temperatures around 19 degrees. As we move into the evening, it will stay overcast and 17 degrees. Overnight, the clouds will remain but the temperature will drop to 13 degrees. Tomorrow morning starts overcast with rain expected, before clearing to clear skies tomorrow evening. Right now at Great Marlow School, it's mainly clear and 15 degrees.

• soft llm_critic: The forecast uses purple language by describing the overnight temperature as "warm for an overnight low" when it's 13°C, which is generally considered cool.
• soft llm_critic: The script describes the weather as something being actively maintained by saying "the clouds will remain" instead of simply stating they will be present.

Iteration 3 — served by gemini-2.5-flash-lite — 11.4s

This afternoon will be overcast, with temperatures around 19 degrees. As we move into the evening, it will stay overcast and 17 degrees. Overnight, it will be overcast and 13 degrees. Tomorrow morning starts overcast with rain expected, before clearing to clear skies tomorrow evening. Right now at Great Marlow School, it's mainly clear and 15 degrees.

• soft llm_critic: The script wrongly describes the move from "current conditions" to the first forecast period as "a change", "a shift", or "turning", even though the summary just shows normal daily warming/cooling with no actual change in weather type.
• soft llm_critic: The script describes the weather as something being actively maintained, sustained, or performed, rather than simply described.

Iteration 4 — served by gemini-2.5-flash-lite — 11.3s

This afternoon will be overcast, with temperatures around 19 degrees. As we move into the evening, it will stay overcast and 17 degrees. Overnight, it will be overcast, and the temperature will drop to 13 degrees. Tomorrow morning starts overcast with rain expected, before clearing to clear skies tomorrow evening. Right now at Great Marlow School, it's mainly clear and 15 degrees.

• soft llm_critic: The forecast is not conditions-led, but a list of temperatures and general cloud cover.
• soft llm_critic: The description of overnight temperatures as "warm for an overnight low" contradicts the stated temperature of 13°C, which is generally considered cool for an overnight low.

Iteration 0 — served by gemini-2.5-flash-lite (fallback) — 88.0s

This afternoon will be overcast with temperatures feeling a little cooler than they have been. Overnight, it remains overcast, but temperatures will climb to a mild 13 degrees. Tomorrow starts overcast with temperatures in the mid-teens, feeling a bit cooler again by the afternoon. Towards tomorrow evening, though, the skies are expected to clear. Right now at Great Marlow School, it's partly cloudy and 13 degrees.

• hard opening_period: The first period listed in the summary is TODAY Morning — the forecast must open with "this morning", not skip ahead to a later period.
• soft summer_mild: "mild" used in a summer (May-Sep) forecast — only correct if this period is genuinely cooler than usual for the time of year (the summer mirror of "mild" meaning warmer-than-usual in winter); if it's just describing pleasant warmth, it reads backwards.

Iteration 1 — served by gemini-2.5-flash-lite — 5.7s

This morning it's partly cloudy and cool, with temperatures around 13 degrees. This afternoon will be overcast with temperatures feeling a little cooler than they have been. Overnight, it remains overcast, but temperatures will climb to a pleasant 13 degrees. Tomorrow starts overcast with temperatures in the mid-teens, feeling a bit cooler again by the afternoon. Towards tomorrow evening, though, the skies are expected to clear. Right now at Great Marlow School, it's partly cloudy and 13 degrees.

• hard temp_word_repetition: Temperature-register word "cool" (or a variant) used 3 times (cool, cooler) — vary the language instead of repeating.

Iteration 2 — served by gemini-2.5-flash-lite — 11.8s selected — this is what aired

This morning it's partly cloudy and a bit nippy, with temperatures around 13 degrees. This afternoon will be overcast with temperatures feeling a little less warm than they have been. Overnight, it remains overcast, but temperatures will climb to a pleasant 13 degrees. Tomorrow starts overcast with temperatures in the mid-teens, feeling a bit fresher again by the afternoon. Towards tomorrow evening, though, the skies are expected to clear. Right now at Great Marlow School, it's partly cloudy and 13 degrees.

• soft llm_critic: The transition from current conditions to today's forecast is wrongly described as "a bit nippy" and "feeling a little less warm" when the temperature rises.
• soft llm_critic: "Feels like 16°C" is stated for both today and tomorrow afternoon, yet the script for today says "temperatures feeling a little less warm than they have been", which implies a drop in perceived temperature rather than a flat comparison.
• soft llm_critic: The phrase "pleasant 13 degrees" is potentially purple language if 13°C is not typically considered pleasant for an overnight low.
• soft llm_critic: The script incorrectly describes the weather as "feeling a bit fresher again" when the stated temperature is 17°C, which is warmer than the previous night's low.
• soft llm_critic: "This morning it's partly cloudy" is grammatically incorrect; it should be "This morning there's partly cloudy".

Iteration 3 — served by gemini-2.5-flash-lite — 5.8s

This morning there's partly cloudy and a bit cool, with temperatures around 13 degrees. This afternoon will be overcast with temperatures reaching 19 degrees, feeling like 16. Overnight, it remains overcast, but temperatures will climb to a mild 13 degrees. Tomorrow starts overcast with temperatures in the mid-teens, feeling a bit warmer again by the afternoon. Towards tomorrow evening, though, the skies are expected to clear. Right now at Great Marlow School, it's partly cloudy and 13 degrees.

• hard temp_figure_count: Found 4 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.
• soft summer_mild: "mild" used in a summer (May-Sep) forecast — only correct if this period is genuinely cooler than usual for the time of year (the summer mirror of "mild" meaning warmer-than-usual in winter); if it's just describing pleasant warmth, it reads backwards.

Iteration 4 — served by gemini-2.5-flash-lite — 5.8s

This morning there's partly cloudy and a bit cool, with temperatures around 13 degrees. This afternoon will be overcast with temperatures reaching 19 degrees, feeling like 16. Overnight, it remains overcast, but temperatures will climb to a mild 13 degrees. Tomorrow starts overcast with temperatures in the mid-teens, feeling a bit warmer again by the afternoon. Towards tomorrow evening, though, the skies are expected to clear. Right now at Great Marlow School, it's partly cloudy and 13 degrees.

• hard temp_figure_count: Found 4 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.
• soft summer_mild: "mild" used in a summer (May-Sep) forecast — only correct if this period is genuinely cooler than usual for the time of year (the summer mirror of "mild" meaning warmer-than-usual in winter); if it's just describing pleasant warmth, it reads backwards.

Iteration 0 — served by inclusionai/ling-3.0-flash-fin:free — 22.7s

This morning will be partly cloudy with a few sunny spells. It will stay overcast through this afternoon and this evening, peaking at 19 degrees. Tonight, clouds persist and temperatures won't drop much, sitting at 13 degrees. Tomorrow will be overcast through the day, clearing up nicely by tomorrow evening. Right now at Great Marlow School, it's mainly clear and 11 degrees.

• soft llm_critic: The forecast is not conditions-led.
• soft llm_critic: The phrase "stay overcast through this afternoon and this evening" is redundant.
• soft llm_critic: The phrase "temperatures won't drop much" is an example of theatrical language.

Iteration 1 — served by gemini-2.5-flash-lite — 11.3s

This morning will be partly cloudy with a few sunny spells. It will be overcast through this afternoon and into the evening, peaking at 19 degrees. Tonight, clouds persist and temperatures will be around 13 degrees. Tomorrow will be overcast through the day, clearing up nicely by tomorrow evening. Right now at Great Marlow School, it's mainly clear and 11 degrees.

• soft llm_critic: The phrase "peaking at 19 degrees" is redundant as a high temperature is implied by "afternoon" and a specific peak is usually not a defining feature of a standard forecast.
• soft llm_critic: The phrase "clearing up nicely by tomorrow evening" is theatrical and not grounded in a local presenter tone.

Iteration 2 — served by gemini-2.5-flash-lite — 11.5s

This morning will be partly cloudy with a few sunny spells. It will be overcast through this afternoon and into the evening, reaching 19 degrees. Tonight, clouds persist and temperatures will be around 13 degrees. Tomorrow will be overcast through the day, becoming clear by tomorrow evening. Right now at Great Marlow School, it's mainly clear and 11 degrees.

• soft llm_critic: The forecast is not conditions-led, focusing on cloud cover and temperature rather than how the weather will feel or what it will do.
• soft llm_critic: The script describes the move from current conditions to the first forecast period as simply "will be partly cloudy," which does not indicate a change in weather type and could be flagged as a change in the conditions-led sense.
• soft llm_critic: "reaching 19 degrees" is a temperature description, not a conditions-led description of what the weather will do.
• soft llm_critic: "around 13 degrees" is a temperature description, not a conditions-led description of what the weather will do.
• soft llm_critic: "becoming clear by tomorrow evening" is a description of cloud cover, not a conditions-led description of what the weather will do.

Iteration 3 — served by gemini-2.5-flash-lite — 11.1s selected — this is what aired

This morning will be partly cloudy with a few sunny spells. It will be overcast through this afternoon and into the evening, reaching 19 degrees. Tonight, clouds persist and temperatures will be around 13 degrees. Tomorrow will be overcast through the day, becoming clear by tomorrow evening. Right now at Great Marlow School, it's mainly clear and 11 degrees.

• soft llm_critic: The script uses "warm" to describe an overnight low of 13°C, which contradicts the general description of the day's temperatures as "cool" and is an illogical contradiction.

Iteration 4 — served by gemini-2.5-flash-lite — 11.2s

This morning will be partly cloudy with a few sunny spells. It will be overcast through this afternoon and into the evening, reaching 19 degrees. Tonight, clouds persist and temperatures will be around 13 degrees. Tomorrow will be overcast through the day, becoming clear by tomorrow evening. Right now at Great Marlow School, it's mainly clear and 11 degrees.

• soft llm_critic: The script describes the weather as something being actively maintained ("clouds persist") rather than simply described.

Iteration 5 — served by gemini-2.5-flash-lite — 11.4s

This morning will be partly cloudy with a few sunny spells. It will be overcast through this afternoon and into the evening, reaching 19 degrees. Tonight, clouds persist and temperatures will be around 13 degrees. Tomorrow will be overcast through the day, becoming clear by tomorrow evening. Right now at Great Marlow School, it's mainly clear and 11 degrees.

• soft llm_critic: The forecast describes the move from current conditions to the first forecast period as "partly cloudy with a few sunny spells" and "overcast" which implies a change in weather type when the summary only shows normal daily warming.

Iteration 0 — served by gemini-2.5-flash-lite (fallback) — 88.0s

This morning will be cool with clear skies before a build-up of cloud, giving partly cloudy skies and a gentle warmth by the time we reach the afternoon. It will feel cooler later in the afternoon, though, as the skies turn overcast. Overnight, it remains overcast and a bit muggy for the time of year. Tomorrow, we'll start overcast and that will last through much of the day, feeling a little cooler in the afternoon before clear skies return this evening. Right now at the Marlow FM studios, it's clear and 11 degrees.

• hard temp_figure_count: No specific temperature figure found in the forecast body — include at least one.
• hard temp_word_repetition: Temperature-register word "cool" (or a variant) used 3 times (cool, cooler) — vary the language instead of repeating.
• hard tomorrow_anchoring: "this evening" appears after "tomorrow" is first mentioned — once the forecast moves to tomorrow, every period must stay anchored to "tomorrow ...".
• hard temperature_register_mismatch: "warm" used to describe today morning, but the summary labels that period "cool": "This morning will be cool with clear skies before a build-up of cloud, giving partly cloudy skies and a gentle warmth by the time we reach the afternoon." — the word contradicts the actual temperature register for that period instead of just varying the language.

Iteration 1 — served by gemini-2.5-flash-lite — 11.6s selected — this is what aired

This morning will be crisp with clear skies before a build-up of cloud, giving partly cloudy skies and a pleasant 17 degrees by the time we reach the afternoon. It will feel a bit less warm later in the afternoon, though, as the skies turn overcast, with a high of 19 degrees. Overnight, it remains overcast and a bit close for the time of year. Tomorrow, we'll start overcast and that will last through much of the day, feeling a little less mild in the afternoon before clear skies return tomorrow evening. Right now at the Marlow FM studios, it's clear and 11 degrees.

• soft summer_mild: "mild" used in a summer (May-Sep) forecast — only correct if this period is genuinely cooler than usual for the time of year (the summer mirror of "mild" meaning warmer-than-usual in winter); if it's just describing pleasant warmth, it reads backwards.
• soft llm_critic: The forecast describes the move from current conditions to the first forecast period as a "build-up of cloud" when the summary shows a normal daily warming.
• soft llm_critic: The phrase "a bit close for the time of year" contradicts the temperature being described as "warm for an overnight low".
• soft llm_critic: The script describes the weather as "feeling a little less mild" rather than simply describing the temperature change.

Iteration 2 — served by gemini-2.5-flash-lite — 5.8s

This morning will be crisp with clear skies before a build-up of cloud, giving partly cloudy skies and a pleasant 17 degrees by the time we reach the afternoon. It will feel a bit less warm later in the afternoon, though, as the skies turn overcast, with a high of 19 degrees. Overnight, it remains overcast and a bit warmer than usual for the time of year. Tomorrow, we'll start overcast and that will last through much of the day, with a high of 19 degrees feeling like 16 degrees in the afternoon before clear skies return tomorrow evening. Right now at the Marlow FM studios, it's clear and 11 degrees.

• hard temp_figure_count: Found 4 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.
• hard degrees_repetition: "degrees" used more than once in one sentence: "Tomorrow, we'll start overcast and that will last through much of the day, with a high of 19 degrees feeling like 16 degrees in the afternoon before clear skies return tomorrow evening." — only the first figure in a sentence should say "degrees".
• soft word_count: Forecast is 111 words — aim for roughly 60-95 words for a ~30-35s read.

Iteration 3 — served by gemini-2.5-flash-lite — 5.7s

This morning will be crisp with clear skies before a build-up of cloud, giving partly cloudy skies and a pleasant 17 degrees by the time we reach the afternoon. It will feel a bit less warm later in the afternoon, though, as the skies turn overcast, with a high of 19 degrees. Overnight, it remains overcast and a bit warmer than usual for the time of year. Tomorrow, we'll start overcast and that will last through much of the day, with a high of 19 degrees, feeling a little less warm in the afternoon before clear skies return tomorrow evening. Right now at the Marlow FM studios, it's clear and 11 degrees.

• hard temp_word_repetition: Temperature-register word "warm" (or a variant) used 3 times (warm, warmer) — vary the language instead of repeating.
• soft word_count: Forecast is 112 words — aim for roughly 60-95 words for a ~30-35s read.

Iteration 0 — served by poolside/laguna-s-2.1:free — 29.0s selected — this is what aired

This afternoon will be overcast and cool, with temperatures reaching 19 degrees and a humid feel making it closer to 16. The cloud cover holds steady through the evening, staying overcast and mild overnight at 13 degrees. Tomorrow brings little change — overcast through the morning and afternoon, warming to 19 degrees again, though clearer skies return by the evening. There's a moderate UV index to be aware of during tomorrow's afternoon. Right now at the Marlow FM studios, it's mainly clear and 12 degrees.

• hard opening_period: The first period listed in the summary is TODAY Morning — the forecast must open with "this morning", not skip ahead to a later period.
• hard temp_figure_count: Found 4 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.
• soft summer_mild: "mild" used in a summer (May-Sep) forecast — only correct if this period is genuinely cooler than usual for the time of year (the summer mirror of "mild" meaning warmer-than-usual in winter); if it's just describing pleasant warmth, it reads backwards.

Iteration 1 — served by gemini-2.5-flash-lite — 5.8s

This morning will be overcast and cool, with temperatures reaching 17 degrees. This afternoon will be overcast and cool, with temperatures reaching 19 degrees and a humid feel making it closer to 16. The cloud cover holds steady through the evening, staying overcast and cool overnight at 13 degrees. Tomorrow brings little change — overcast through the morning and afternoon, warming to 19 degrees again, though clearer skies return by the evening. There's a moderate UV index to be aware of during tomorrow's afternoon. Right now at the Marlow FM studios, it's mainly clear and 12 degrees.

• hard temp_figure_count: Found 5 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.
• hard temp_word_repetition: Temperature-register word "cool" (or a variant) used 3 times (cool) — vary the language instead of repeating.
• hard temperature_register_mismatch: "cool" used to describe today overnight, but the summary labels that period "warm": "The cloud cover holds steady through the evening, staying overcast and cool overnight at 13 degrees." — the word contradicts the actual temperature register for that period instead of just varying the language.

Iteration 2 — served by gemini-2.5-flash-lite — 5.7s

This morning will be overcast and cool, with temperatures reaching 17 degrees. This afternoon will be overcast and cool, with temperatures reaching 19 degrees and a humid feel making it closer to 16. The cloud cover holds steady through the evening, staying overcast and cool overnight at 13 degrees. Tomorrow brings little change — overcast through the morning and afternoon, warming to 19 degrees again, though clearer skies return by the evening. There's a moderate UV index to be aware of during tomorrow's afternoon. Right now at the Marlow FM studios, it's mainly clear and 12 degrees.

• hard temp_figure_count: Found 5 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.
• hard temp_word_repetition: Temperature-register word "cool" (or a variant) used 3 times (cool) — vary the language instead of repeating.
• hard temperature_register_mismatch: "cool" used to describe today overnight, but the summary labels that period "warm": "The cloud cover holds steady through the evening, staying overcast and cool overnight at 13 degrees." — the word contradicts the actual temperature register for that period instead of just varying the language.

Iteration 0 — served by poolside/laguna-s-2.1:free — 17.2s

This afternoon turns overcast with a cool 19 degrees, the sunshine giving way to thicker cloud. The evening stays grey and damp-feeling at 16 degrees, and through the overnight it remains mild enough at 13 degrees to feel a bit sticky in bed. Tomorrow morning brings more of the same — overcast and 18 degrees, with the humidity making it feel close and muggy. Into the afternoon the cloud cover holds firm at 19 degrees, though a brisk wind means it feels more like 16 out there. The evening clears up nicely though, dropping to 17 degrees with a fresher feel under clearer skies. Right now at Great Marlow School, it's clear and 12 degrees.

• hard opening_period: The first period listed in the summary is TODAY Morning — the forecast must open with "this morning", not skip ahead to a later period.
• hard temp_figure_count: Found 7 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.
• hard degrees_repetition: "degrees" used more than once in one sentence: "The evening stays grey and damp-feeling at 16 degrees, and through the overnight it remains mild enough at 13 degrees to feel a bit sticky in bed." — only the first figure in a sentence should say "degrees".
• soft word_count: Forecast is 115 words — aim for roughly 60-95 words for a ~30-35s read.
• soft summer_mild: "mild" used in a summer (May-Sep) forecast — only correct if this period is genuinely cooler than usual for the time of year (the summer mirror of "mild" meaning warmer-than-usual in winter); if it's just describing pleasant warmth, it reads backwards.

Iteration 1 — served by gemini-2.5-flash-lite — 5.8s

This morning starts clear and cool at 17 degrees, but this afternoon turns overcast with a 19. The evening stays grey and damp-feeling at 16, and through the overnight it remains warm enough at 13 to feel a bit sticky in bed. Tomorrow morning brings more of the same — overcast and 18, with the humidity making it feel close and muggy. Into the afternoon the cloud cover holds firm at 19, though a brisk wind means it feels more like 16 out there. The evening clears up nicely though, dropping to 17 with a fresher feel under clearer skies. Right now at Great Marlow School, it's clear and 12 degrees.

• hard temp_figure_count: Found 8 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.
• soft word_count: Forecast is 111 words — aim for roughly 60-95 words for a ~30-35s read.

Iteration 2 — served by gemini-2.5-flash-lite — 11.3s selected — this is what aired

This morning starts clear and cool, but this afternoon turns overcast. The evening stays grey, and through the overnight it remains warm enough to feel a bit sticky. Tomorrow morning brings more of the same, with the humidity making it feel close and muggy. Into the afternoon the cloud cover holds firm, though a brisk wind means it feels cooler out there. The evening clears up nicely though, dropping to 17 with a fresher feel under clearer skies. Right now at Great Marlow School, it's clear and 12 degrees.

• soft llm_critic: The script wrongly describes the move from "current conditions" to the first forecast period as "turns" when it's just normal daily warming.
• soft llm_critic: The script uses theatrical language by describing the evening clearing as "clears up nicely".
• soft llm_critic: The script uses redundant phrasing by saying "dropping to 17 with a fresher feel under clearer skies".

Iteration 3 — served by gemini-2.5-flash-lite — 11.2s

This morning starts clear and cool, but this afternoon turns overcast. The evening stays grey, and through the overnight it remains warm enough to feel a bit sticky. Tomorrow morning brings more of the same, with the humidity making it feel close and muggy. Into the afternoon the cloud cover holds firm, though a brisk wind means it feels cooler out there. The evening clears up, dropping to 17 degrees with a fresher feel under clearer skies. Right now at Great Marlow School, it's clear and 12 degrees.

• soft llm_critic: The script wrongly describes the move from current conditions to the first forecast period as "turns overcast," even though the summary shows normal daily warming with no actual change in weather type.
• soft llm_critic: The script uses theatrical language ("sticky") instead of a grounded local-presenter tone.
• soft llm_critic: The script describes the weather as something being actively performed ("the cloud cover holds firm") rather than simply described.

Iteration 4 — served by gemini-2.5-flash-lite — 11.6s

This morning starts clear and cool, but this afternoon turns overcast. The evening stays grey, and through the overnight it remains warm enough to feel a bit sticky. Tomorrow morning brings more of the same, with the humidity making it feel close and muggy. Into the afternoon the cloud cover holds firm, though a brisk wind means it feels cooler out there. The evening clears up, dropping to 17 degrees with a fresher feel. Right now at Great Marlow School, it's clear and 12 degrees.

• soft llm_critic: The script wrongly describes the move from current conditions to the first forecast period as "turns overcast" when it is simply a normal daily warming with no actual change in weather type.
• soft llm_critic: The script uses the theatrical phrase "dropping to 17 degrees with a fresher feel" which is overwrought.
• soft llm_critic: The script describes the weather as "the cloud cover holds firm" which is theatrical language.
• soft llm_critic: The script describes the weather as "keeping that gentle heat going" which is theatrical language.
• soft llm_critic: The script has a grammatical error with "it's a light drizzle" which should be "there's a light drizzle".

Iteration 0 — served by gemini-2.5-flash-lite (fallback) — 87.9s selected — this is what aired

This afternoon will be overcast with temperatures around 19 degrees, feeling cool. It will stay overcast through the evening and overnight, with temperatures dropping to a warm 13 degrees. Tomorrow morning starts overcast with a muggy feel and a temperature of 18 degrees, staying overcast and cool through the afternoon. Right now in Marlow, it's clear and 12 degrees.

• hard opening_period: The first period listed in the summary is TODAY Morning — the forecast must open with "this morning", not skip ahead to a later period.

Iteration 1 — served by gemini-2.5-flash-lite — 5.5s

This morning will be clear and cool, reaching 17 degrees. This afternoon will be overcast with temperatures around 19 degrees, feeling cool. It will stay overcast through the evening and overnight, with temperatures dropping to a warm 13 degrees. Tomorrow morning starts overcast with a muggy feel and a temperature of 18 degrees, staying overcast and cool through the afternoon. Right now in Marlow, it's clear and 12 degrees.

• hard temp_figure_count: Found 4 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.
• hard temp_word_repetition: Temperature-register word "cool" (or a variant) used 3 times (cool) — vary the language instead of repeating.

Iteration 2 — served by gemini-2.5-flash-lite — 5.5s

This morning will be clear and cool, reaching 17 degrees. This afternoon will be overcast with temperatures around 19 degrees, feeling cool. It will stay overcast through the evening and overnight, with temperatures dropping to a warm 13 degrees. Tomorrow morning starts overcast with a muggy feel and a temperature of 18 degrees, staying overcast and cool through the afternoon. Right now in Marlow, it's clear and 12 degrees.

• hard temp_figure_count: Found 4 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.
• hard temp_word_repetition: Temperature-register word "cool" (or a variant) used 3 times (cool) — vary the language instead of repeating.

Iteration 0 — served by nex-agi/nex-n2.5-mini:free — 35.9s

This morning is partly cloudy, with a cool 17 degrees. Overcast skies continue through this afternoon, reaching 19 degrees. It stays overcast through this evening and overnight, with temperatures not dropping far into the night. Tomorrow is overcast, with a muggy feel in the morning and an afternoon that feels closer to 16 degrees, before skies clear this evening. Right now at Great Marlow School, it's clear and 13 degrees.

• hard tomorrow_anchoring: "this evening" appears after "tomorrow" is first mentioned — once the forecast moves to tomorrow, every period must stay anchored to "tomorrow ...".

Iteration 1 — served by gemini-2.5-flash-lite — 11.6s selected — this is what aired

This morning is partly cloudy, with a cool 17 degrees. Overcast skies continue through this afternoon, reaching 19 degrees. It stays overcast through this evening and overnight, with temperatures not dropping far into the night. Tomorrow, it's overcast, with a muggy feel in the morning and an afternoon that feels closer to 16 degrees, before skies clear tomorrow evening. Right now at Great Marlow School, it's clear and 13 degrees.

• soft llm_critic: The forecast describes the move from current conditions to today's morning forecast as "This morning is partly cloudy" rather than a change.
• soft llm_critic: The phrase "temperatures not dropping far into the night" is illogical.
• soft llm_critic: The phrase "humidity 87% (may feel muggy)" incorrectly states that humidity may feel muggy, when high humidity itself can feel muggy.
• soft llm_critic: The script describes the weather as something being actively maintained rather than simply described.

Iteration 2 — served by gemini-2.5-flash-lite — 5.7s

After a clear and warm start to the day, this morning will be partly cloudy, with a cool 17 degrees. Overcast skies continue through this afternoon, reaching 19 degrees. It stays overcast through this evening and overnight, with temperatures only dropping to 13 degrees overnight. Tomorrow, it's overcast, with high humidity making it feel muggy in the morning and an afternoon that feels closer to 16 degrees, before skies clear tomorrow evening. Right now at Great Marlow School, it's clear and 13 degrees.

• hard temp_figure_count: Found 4 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.
• hard temperature_register_mismatch: "warm" used to describe today morning, but the summary labels that period "cool": "After a clear and warm start to the day, this morning will be partly cloudy, with a cool 17 degrees." — the word contradicts the actual temperature register for that period instead of just varying the language.

Iteration 3 — served by gemini-2.5-flash-lite — 5.7s

After a clear and warm start to the day, this morning will be partly cloudy, with a cool 17 degrees. Overcast skies continue through this afternoon, reaching 19 degrees. It stays overcast through this evening and overnight, with temperatures only dropping to 13 degrees overnight. Tomorrow, it's overcast, with high humidity making it feel muggy in the morning and an afternoon that feels closer to 16 degrees, before skies clear tomorrow evening. Right now at Great Marlow School, it's clear and 13 degrees.

• hard temp_figure_count: Found 4 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.
• hard temperature_register_mismatch: "warm" used to describe today morning, but the summary labels that period "cool": "After a clear and warm start to the day, this morning will be partly cloudy, with a cool 17 degrees." — the word contradicts the actual temperature register for that period instead of just varying the language.

Iteration 0 — served by inclusionai/ling-3.0-flash-fin:free — 17.6s selected — this is what aired

This morning will be partly cloudy and cool, with temperatures climbing to around 19 degrees this afternoon under overcast skies and a muggy feel from the humidity. Light drizzle is expected this evening, and overnight it turns cloudy and cooler, dropping to around 12 degrees. Tomorrow morning brings rain, but it should clear up for a pleasant and warm afternoon reaching 20 degrees, with evening skies turning clear. Right now at Great Marlow School, it's clear and 14 degrees.

• hard temperature_register_mismatch: "warm" used to describe tomorrow morning, but the summary labels that period "cool": "Tomorrow morning brings rain, but it should clear up for a pleasant and warm afternoon reaching 20 degrees, with evening skies turning clear." — the word contradicts the actual temperature register for that period instead of just varying the language.

Iteration 1 — served by gemini-2.5-flash-lite — 5.7s

This morning will be partly cloudy and cool, with temperatures climbing to around 19 degrees this afternoon under overcast skies and a muggy feel from the humidity. Light drizzle is expected this evening, and overnight it turns cloudy and cooler, dropping to around 12 degrees. Tomorrow morning brings rain, but it should clear up for a pleasant and warm afternoon reaching 20 degrees, with evening skies turning clear. Right now at Great Marlow School, it's clear and 14 degrees.

• hard temperature_register_mismatch: "warm" used to describe tomorrow morning, but the summary labels that period "cool": "Tomorrow morning brings rain, but it should clear up for a pleasant and warm afternoon reaching 20 degrees, with evening skies turning clear." — the word contradicts the actual temperature register for that period instead of just varying the language.

Iteration 2 — served by gemini-2.5-flash-lite — 5.6s

This morning will be partly cloudy and cool, with temperatures climbing to around 19 degrees this afternoon under overcast skies and a muggy feel from the humidity. Light drizzle is expected this evening, and overnight it turns cloudy and cooler, dropping to around 12 degrees. Tomorrow morning brings rain, but it should clear up for a pleasant and warm afternoon reaching 20 degrees, with evening skies turning clear. Right now at Great Marlow School, it's clear and 14 degrees.

• hard temperature_register_mismatch: "warm" used to describe tomorrow morning, but the summary labels that period "cool": "Tomorrow morning brings rain, but it should clear up for a pleasant and warm afternoon reaching 20 degrees, with evening skies turning clear." — the word contradicts the actual temperature register for that period instead of just varying the language.

Iteration 0 — served by gemini-2.5-flash-lite (fallback) — 87.9s

This morning starts partly cloudy with temperatures around 17 degrees, feeling cool. This afternoon will be overcast and cooler still, with humidity making it feel a little muggy. Light drizzle is expected this evening, before an overcast and cool night with lows around 12 degrees. Tomorrow sees overcast skies and a chance of rain in the morning, but it should clear up for a warm afternoon. Right now in Marlow, it's mainly clear and 15 degrees.

• hard temp_word_repetition: Temperature-register word "cool" (or a variant) used 3 times (cool, cooler) — vary the language instead of repeating.

Iteration 1 — served by gemini-2.5-flash-lite — 11.4s selected — this is what aired

This morning starts partly cloudy with temperatures around 17 degrees, feeling a bit brisk. This afternoon will be overcast and a touch warmer still, with humidity making it feel a little muggy. Light drizzle is expected this evening, before an overcast and chilly night with lows around 12 degrees. Tomorrow sees overcast skies and a chance of rain in the morning, but it should clear up for a warm afternoon. Right now in Marlow, it's mainly clear and 15 degrees.

• soft llm_critic: The phrase "feeling a bit brisk" contradicts the stated temperature of 17°C being described as "cool" for the morning.
• soft llm_critic: The forecast describes the move from "current conditions" to the first forecast period (today's morning) as "starts partly cloudy with temperatures around 17 degrees" which is a normal daily warming, not a change in weather type.
• soft llm_critic: The script incorrectly uses "it's" in "This morning starts partly cloudy" where "there's" would be grammatically correct.

Iteration 2 — served by gemini-2.5-flash-lite — 12.0s

This morning there's partly cloudy with temperatures around 17 degrees, feeling cool. This afternoon will be overcast and a touch warmer still, with humidity making it feel a little muggy. Light drizzle is expected this evening, before an overcast and chilly night with lows around 12 degrees. Tomorrow sees overcast skies and a chance of rain in the morning, but it should clear up for a warm afternoon. Right now in Marlow, it's mainly clear and 15 degrees.

• soft llm_critic: The phrase "partly cloudy with temperatures" incorrectly uses "with" instead of "and" or another suitable conjunction.
• soft llm_critic: The forecast describes the move from "current conditions" to the first forecast period as "feeling cool" without a distinct change in weather type.
• soft llm_critic: The script uses "warm" for current conditions (15°C) and then describes the morning as "cool" at 17°C, which contradicts typical temperature perception.
• soft llm_critic: The script uses "warm" for current conditions (15°C) and then describes the afternoon as "cool" at 19°C, which contradicts typical temperature perception.
• soft llm_critic: The script uses "warm" for current conditions (15°C) and then describes the evening as "cool" at 17°C, which contradicts typical temperature perception.
• soft llm_critic: The script uses "warm" for current conditions (15°C) and then describes the overnight low as "cool" at 12°C, which contradicts typical temperature perception.
• soft llm_critic: The script uses "warm" for current conditions (15°C) and then describes the morning forecast as "cool" at 17°C, which contradicts typical temperature perception.
• soft llm_critic: The script uses "warm" for current conditions (15°C) and then describes the afternoon forecast as "warm" at 20°C, which contradicts typical temperature perception.
• soft llm_critic: The script uses "warm" for current conditions (15°C) and then describes the evening forecast as "cool" at 17°C, which contradicts typical temperature perception.

Iteration 3 — served by gemini-2.5-flash-lite — 11.5s

This morning there's partly cloudy with temperatures around 17 degrees, feeling cool. This afternoon will be overcast and a touch warmer still, with humidity making it feel a little muggy. Light drizzle is expected this evening, before an overcast and chilly night with lows around 12 degrees. Tomorrow sees overcast skies and a chance of rain in the morning, but it should clear up for a warm afternoon. Right now in Marlow, it's mainly clear and 15 degrees.

• soft llm_critic: The forecast is not conditions-led, it lists temperatures before describing the feeling.
• soft llm_critic: The phrasing "cool" for 17°C in the morning contradicts the temperature description as "cool" in the script.
• soft llm_critic: The phrasing "warm" for 20°C in the afternoon contradicts the temperature description as "warm" in the script, and the "feels like 16°C" suggests it may not feel warm.
• soft llm_critic: "This morning there's partly cloudy" is a grammatical error; it should be "This morning there's partly cloud" or "This morning it's partly cloudy".

Iteration 0 — served by gemini-2.5-flash-lite (fallback) — 64.8s selected — this is what aired

Clear skies will give way to an overcast afternoon tomorrow, with a light drizzle developing through the evening. Temperatures will be cool throughout the day, reaching a high of 19 degrees, before falling back to 17 degrees for the evening. Right now at Great Marlow School, it's clear and 15 degrees.

• hard opening_period: The first period listed in the summary is TODAY Overnight — the forecast must open with "tonight", not skip ahead to a later period.
• hard degrees_repetition: "degrees" used more than once in one sentence: "Temperatures will be cool throughout the day, reaching a high of 19 degrees, before falling back to 17 degrees for the evening." — only the first figure in a sentence should say "degrees".
• soft word_count: Forecast is 51 words — aim for roughly 60-95 words for a ~30-35s read.

Iteration 1 — served by gemini-2.5-flash-lite — 5.8s

Well, it's a lovely clear night out there right now, and it's staying nice and mild too, with temperatures around 13 degrees. Looking ahead to tomorrow, Wednesday, we'll start the day with clear skies and a pleasant 17 degrees. But as we head into the afternoon, things will turn a bit more overcast, reaching a high of 19. It might feel a touch muggy with the humidity at 77%, and the UV index will be moderate. Then, as the evening draws in, expect a little light drizzle. Right now at Great Marlow School, it's clear and 15 degrees.

• hard opening_period: The first period listed in the summary is TODAY Overnight — the forecast must open with "tonight", not skip ahead to a later period.
• hard day_name: Day name "Wednesday" used — never use day names for today/tomorrow.
• soft summer_mild: "mild" used in a summer (May-Sep) forecast — only correct if this period is genuinely cooler than usual for the time of year (the summer mirror of "mild" meaning warmer-than-usual in winter); if it's just describing pleasant warmth, it reads backwards.

Iteration 2 — served by gemini-2.5-flash-lite — 6.1s

Well, hello everyone! Let's take a look at what's happening with the weather. Tonight, we're enjoying clear skies and it's a rather warm 15 degrees out there. Looking ahead to tomorrow, Wednesday the 16th, the morning will start off clear and a pleasant 17 degrees. By the afternoon, things will become a bit more overcast, with temperatures climbing to 19 degrees. It'll be a moderate UV index, and with humidity at 77%, it might feel a little muggy. As we head into the evening, expect some light drizzle, with the temperature settling back to 17 degrees. Right now at Great Marlow School, it's clear and 15 degrees.

• hard opening_period: The first period listed in the summary is TODAY Overnight — the forecast must open with "tonight", not skip ahead to a later period.
• hard temp_figure_count: Found 4 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.
• hard day_name: Day name "Wednesday" used — never use day names for today/tomorrow.

Iteration 0 — served by gemini-2.5-flash-lite (fallback) — 87.8s

It's a warm start to the night at 16 degrees, and will stay mainly clear. Overnight, temperatures will drop to around 13 degrees, warm for the time of year. Tomorrow morning, expect partly cloudy skies with a touch of coolness, feeling like 14 degrees, and that 17-degree temperature will continue through the afternoon and evening. Right now at the Marlow FM studios, it's mainly clear and 16 degrees.

• hard opening_period: The first period listed in the summary is TODAY Overnight — the forecast must open with "tonight", not skip ahead to a later period.
• hard temp_figure_count: Found 4 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.
• hard degrees_repetition: "degrees" used more than once in one sentence: "Tomorrow morning, expect partly cloudy skies with a touch of coolness, feeling like 14 degrees, and that 17-degree temperature will continue through the afternoon and evening." — only the first figure in a sentence should say "degrees".

Iteration 1 — served by gemini-2.5-flash-lite — 5.6s selected — this is what aired

It's a warm start to the night at 16 degrees, and will stay mainly clear. Overnight, temperatures will drop to around 13 degrees, warm for the time of year. Tomorrow morning, expect partly cloudy skies with a touch of coolness, feeling like 14, and that 17-degree temperature will continue through the afternoon and evening. Right now at the Marlow FM studios, it's mainly clear and 16 degrees.

• hard opening_period: The first period listed in the summary is TODAY Overnight — the forecast must open with "tonight", not skip ahead to a later period.
• hard temp_figure_count: Found 4 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.

Iteration 2 — served by gemini-2.5-flash-lite — 5.6s

It's a warm start to the night at 16 degrees, and will stay mainly clear. Overnight, temperatures will drop to around 13 degrees, warm for the time of year. Tomorrow morning, expect partly cloudy skies with a touch of coolness, feeling like 14, and that 17-degree temperature will continue through the afternoon and evening. Right now at the Marlow FM studios, it's mainly clear and 16 degrees.

• hard opening_period: The first period listed in the summary is TODAY Overnight — the forecast must open with "tonight", not skip ahead to a later period.
• hard temp_figure_count: Found 4 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.

Iteration 3 — served by gemini-2.5-flash-lite — 5.6s

It's a warm start to the night at 16 degrees, and will stay mainly clear. Tonight, temperatures will drop to around 13 degrees, warm for the time of year. Tomorrow morning, expect partly cloudy skies with a touch of coolness, feeling like 14, and that 17-degree temperature will continue through the afternoon and evening. Right now at the Marlow FM studios, it's mainly clear and 16 degrees.

• hard opening_period: The first period listed in the summary is TODAY Overnight — the forecast must open with "tonight", not skip ahead to a later period.
• hard temp_figure_count: Found 4 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.

Iteration 0 — served by gemini-2.5-flash-lite (fallback) — 87.9s

Clear skies continue this evening, and the night ahead will be clear and cool, with temperatures dropping to around 12 degrees. Tomorrow morning will be mainly clear and cool too, feeling a bit cooler still at 14 degrees, before cloud builds through the afternoon, bringing overcast skies, though it will remain cool. By tomorrow evening, skies will be partly cloudy, still with temperatures around 17 degrees for the whole day. Right now at the Marlow FM studios, it's clear and 16 degrees.

• hard opening_period: The first period listed in the summary is TODAY Overnight — the forecast must open with "tonight", not skip ahead to a later period.
• hard temp_word_repetition: Temperature-register word "cool" (or a variant) used 4 times (cool, cooler) — vary the language instead of repeating.

Iteration 1 — served by gemini-2.5-flash-lite — 5.7s

Clear skies continue this evening, and tonight will be clear and chilly, with temperatures dropping to around 12 degrees. Tomorrow morning will be mainly clear and mild too, feeling a bit fresher still at 14 degrees, before cloud builds through the afternoon, bringing overcast skies, though it will remain mild. By tomorrow evening, skies will be partly cloudy, still with temperatures around 17 degrees for the whole day. Right now at the Marlow FM studios, it's clear and 16 degrees.

• soft summer_mild: "mild" used in a summer (May-Sep) forecast — only correct if this period is genuinely cooler than usual for the time of year (the summer mirror of "mild" meaning warmer-than-usual in winter); if it's just describing pleasant warmth, it reads backwards.
• hard temperature_register_mismatch: "mild" used to describe tomorrow morning, but the summary labels that period "cool": "Tomorrow morning will be mainly clear and mild too, feeling a bit fresher still at 14 degrees, before cloud builds through the afternoon, bringing overcast skies, though it will remain mild." — the word contradicts the actual temperature register for that period instead of just varying the language.

Iteration 2 — served by gemini-2.5-flash-lite — 11.5s selected — this is what aired

Clear skies continue this evening, and tonight will be clear and chilly, with temperatures dropping to around 12 degrees. Tomorrow morning will be mainly clear and pleasant too, feeling a bit fresher still at 14 degrees, before cloud builds through the afternoon, bringing overcast skies, though it will remain pleasant. By tomorrow evening, skies will be partly cloudy, still with temperatures around 17 degrees for the whole day. Right now at the Marlow FM studios, it's clear and 16 degrees.

• soft llm_critic: The description of the morning "feeling a bit fresher still at 14 degrees" doesn't logically connect to the stated temperature of 17 degrees.
• soft llm_critic: The phrasing "skies will be partly cloudy, still with temperatures around 17 degrees for the whole day" is illogical as it implies the temperature will remain 17 degrees from the evening through the entire following day.

Iteration 3 — served by gemini-2.5-flash-lite — 11.2s

Clear skies continue this evening, and tonight will be clear and chilly, with temperatures dropping to around 12 degrees. Tomorrow morning will be mainly clear and pleasant too, feeling a bit fresher still with a temperature of 14 degrees, before cloud builds through the afternoon, bringing overcast skies, though it will remain pleasant. By tomorrow evening, skies will be partly cloudy, with temperatures still around 17 degrees. Right now at the Marlow FM studios, it's clear and 16 degrees.

• soft llm_critic: The script wrongly describes the move from "current conditions" to the first forecast period as "pleasant too, feeling a bit fresher still" despite a temperature rise.
• soft llm_critic: The script describes the weather as something being actively maintained with "pleasant too".

Iteration 4 — served by gemini-2.5-flash-lite — 11.5s

Clear skies continue this evening, and tonight will be clear and chilly, with temperatures dropping to around 12 degrees. Tomorrow morning will be mainly clear and pleasant too, feeling a bit fresher still, with the temperature around 14 degrees, before cloud builds through the afternoon, bringing overcast skies, though it will remain pleasant. By tomorrow evening, skies will be partly cloudy, still with temperatures around 17 degrees. Right now at the Marlow FM studios, it's clear and 16 degrees.

• soft llm_critic: The script wrongly describes the move from "current conditions" to the first forecast period as "pleasant too, feeling a bit fresher still", even though the summary just shows normal daily warming with no actual change in weather type.
• soft llm_critic: The script uses "pleasant too" and "remain pleasant" in reference to temperatures that are described as "cool" in the summary.

Iteration 0 — served by gemini-2.5-flash-lite (fallback) — 87.7s

We're starting tonight with clear skies and a temperature of 13 degrees, which is warm for an overnight low. Tomorrow morning will be clear and cool, with temperatures around 17 degrees. It will become overcast by tomorrow afternoon, remaining cool at 18 degrees, before clearing up a little for tomorrow evening with temperatures around 16 degrees. Right now at the Marlow FM studios, it's clear and 16 degrees.

• hard temp_figure_count: Found 4 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.
• hard degrees_repetition: "degrees" used more than once in one sentence: "It will become overcast by tomorrow afternoon, remaining cool at 18 degrees, before clearing up a little for tomorrow evening with temperatures around 16 degrees." — only the first figure in a sentence should say "degrees".

Iteration 1 — served by gemini-2.5-flash-lite — 5.6s

We're starting tonight with clear skies and a temperature of 13 degrees, which is warm for an overnight low. Tomorrow morning will be clear and cool, with temperatures around 17. It will become overcast by tomorrow afternoon, remaining cool at 18, before clearing up a little for tomorrow evening with temperatures around 16. Right now at the Marlow FM studios, it's clear and 16 degrees.

• hard temp_figure_count: Found 4 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.

Iteration 2 — served by gemini-2.5-flash-lite — 5.6s

We're starting tonight with clear skies and a temperature of 13 degrees, which is warm for an overnight low. Tomorrow morning will be clear and cool, with temperatures around 17. It will become overcast by tomorrow afternoon, remaining cool at 18, before clearing up a little for tomorrow evening with temperatures around 16. Right now at the Marlow FM studios, it's clear and 16 degrees.

• hard temp_figure_count: Found 4 temperature figures in the body — the rule allows at most 3 for a forecast spanning both today and tomorrow.

Iteration 3 — served by gemini-2.5-flash-lite — 11.2s selected — this is what aired

We're starting tonight with clear skies and a temperature of 13 degrees, which is warm for an overnight low. Tomorrow morning will be clear and cool, with temperatures around 17. It will become overcast by tomorrow afternoon, remaining cool at 18, before clearing up a little for tomorrow evening. Right now at the Marlow FM studios, it's clear and 16 degrees.

• soft llm_critic: The forecast is not conditions-led, e.g. "clear and cool" instead of describing how the coolness feels.
• soft llm_critic: The phrase "warm for an overnight low" is redundant as it states the temperature is warm and then immediately qualifies it as a low, which is naturally cooler.

Iteration 4 — served by gemini-2.5-flash-lite — 11.5s

We're starting tonight with clear skies and a temperature of 13 degrees, which is a pleasant overnight temperature. Tomorrow morning will be clear and cool, with temperatures around 17. It will become overcast by tomorrow afternoon, remaining cool at 18, before clearing up a little for tomorrow evening. Right now at the Marlow FM studios, it's clear and 16 degrees.

• soft llm_critic: The script describes the move from current conditions to the morning forecast as "will be clear and cool" despite the stated temperature change being a rise from 16°C to 17°C.
• soft llm_critic: The script uses the word "cool" to describe 17°C and 18°C temperatures, which are above average for September, and therefore contradicts the literal meaning of the word.

Iteration 5 — served by gemini-2.5-flash-lite — 11.3s

We're starting tonight with clear skies and a temperature of 13 degrees, which is a mild overnight low. Tomorrow morning will be clear and cool, with temperatures around 17. It will become overcast by tomorrow afternoon, remaining cool at 18, before clearing up a little for tomorrow evening. Right now at the Marlow FM studios, it's clear and 16 degrees.

• soft summer_mild: "mild" used in a summer (May-Sep) forecast — only correct if this period is genuinely cooler than usual for the time of year (the summer mirror of "mild" meaning warmer-than-usual in winter); if it's just describing pleasant warmth, it reads backwards.
• soft llm_critic: "clear and cool, with temperatures around 17" is illogical phrasing, as 17°C is not typically described as cool.
• soft llm_critic: "clearing up a little for tomorrow evening" is vague and does not logically parse as a forecast description.

Iteration 0 — served by inclusionai/ling-3.0-flash-fin:free — 16.1s selected — this is what aired

This evening should stay clear and pleasant, around 18 degrees. Overnight it stays clear, with temperatures a touch warmer than usual for the time of year, settling around 13. Tomorrow morning starts bright and clear, but cloud builds through the afternoon, reaching 18. By the evening it turns a little cooler and partly cloudy. Right now in Marlow, it's clear and 17 degrees.

• soft llm_critic: The script wrongly describes the move from current conditions to the first forecast period as "a change" even though the summary shows normal daily warming.
• soft llm_critic: The script uses the theatrical/purple language "pleasant" for a temperature of 18°C.

Iteration 1 — served by gemini-2.5-flash-lite — 11.5s

This evening should stay clear, around 18 degrees. Overnight it stays clear, with temperatures a touch warmer than usual for the time of year, settling around 13. Tomorrow morning starts bright and clear, but cloud builds through the afternoon, reaching 18. By the evening it turns a little cooler and partly cloudy. Right now in Marlow, it's clear and 17 degrees.

• soft llm_critic: The script does not describe the move from current conditions to the first forecast period correctly.
• soft llm_critic: The phrase "a touch warmer than usual for the time of year" is redundant.
• soft llm_critic: The script uses purple language to describe the weather.
• soft llm_critic: The script describes the weather as something being actively maintained rather than simply described.
• soft llm_critic: The phrase "By the evening it turns a little cooler" is illogical given the temperature for the evening is given as 16°C, which is cooler than the afternoon temperature of 18°C.

Iteration 2 — served by gemini-2.5-flash-lite — 11.3s

This evening should stay clear and cool, around 18 degrees. Overnight it stays clear, with temperatures a touch warmer than usual for the time of year, settling around 13. Tomorrow morning starts bright and clear, but cloud builds through the afternoon, reaching 18. By the evening it turns a little cooler and partly cloudy. Right now in Marlow, it's clear and 17 degrees.

• soft llm_critic: The script wrongly describes the move from current conditions to the first forecast period as "a change", "a shift", or "turning".
• soft llm_critic: The script describes the weather as something being actively maintained, sustained, or performed, rather than simply described.

Iteration 0 — served by gemini-2.5-flash-lite (fallback) — 93.7s

This evening brings clear skies and pleasant warmth, with temperatures sitting around 20 degrees. Overnight, it stays mainly clear, though temperatures will drop to a warm 13 degrees for an overnight low. Tomorrow morning starts clear and cool at 17 degrees, before becoming overcast and remaining cool through the afternoon and evening. Right now in Marlow, it's mainly clear and 19 degrees.

• soft llm_critic: The description of the move from current conditions to the overnight forecast incorrectly uses "drop to a warm 13 degrees for an overnight low" to describe a normal nightly temperature decrease without a change in weather type.
• soft llm_critic: The script uses "pleasant warmth" to describe the evening, which is theatrical language not appropriate for a grounded local-presenter tone.
• soft llm_critic: The script uses "warm 13 degrees" for an overnight low when it is described as "warm for an overnight low" in the summary, which is redundant.

Iteration 1 — served by gemini-2.5-flash-lite — 11.8s selected — this is what aired

This evening brings clear skies and a pleasant feel, with temperatures sitting around 20 degrees. Overnight, it stays mainly clear, though temperatures will fall to 13 degrees for an overnight low. Tomorrow morning starts clear and cool at 17 degrees, before becoming overcast and remaining cool through the afternoon and evening. Right now in Marlow, it's mainly clear and 19 degrees.

• soft llm_critic: The forecast describes the move from current conditions to the first forecast period as "tomorrow morning starts clear and cool" when the summary shows normal daily warming.
• soft llm_critic: The script states "Overnight, it stays mainly clear, though temperatures will fall to 13 degrees for an overnight low," which is a contradiction in comparison.

Iteration 2 — served by gemini-2.5-flash-lite — 5.6s

This evening brings clear skies and a pleasant feel, with temperatures sitting around 20 degrees. Overnight, it stays mainly clear, though temperatures will fall to a cool 13 degrees. Tomorrow morning starts clear and cool at 17 degrees, before becoming overcast and remaining cool through the afternoon and evening. Right now in Marlow, it's mainly clear and 19 degrees.

• hard temp_word_repetition: Temperature-register word "cool" (or a variant) used 3 times (cool) — vary the language instead of repeating.
• hard temperature_register_mismatch: "cool" used to describe today overnight, but the summary labels that period "warm": "Overnight, it stays mainly clear, though temperatures will fall to a cool 13 degrees." — the word contradicts the actual temperature register for that period instead of just varying the language.

Iteration 3 — served by gemini-2.5-flash-lite — 5.7s

This evening brings clear skies and a pleasant feel, with temperatures sitting around 20 degrees. Overnight, it stays mainly clear, though temperatures will fall to a cool 13 degrees. Tomorrow morning starts clear and cool at 17 degrees, before becoming overcast and remaining cool through the afternoon and evening. Right now in Marlow, it's mainly clear and 19 degrees.

• hard temp_word_repetition: Temperature-register word "cool" (or a variant) used 3 times (cool) — vary the language instead of repeating.
• hard temperature_register_mismatch: "cool" used to describe today overnight, but the summary labels that period "warm": "Overnight, it stays mainly clear, though temperatures will fall to a cool 13 degrees." — the word contradicts the actual temperature register for that period instead of just varying the language.