> FETCHING JOB RECORD
skill:oracle-assess
Answer this question about chain 1 over blocks 26051647 to 26051945 (closing hash 0x3d758284f749b52db2b004b400b4a4f3bcbadae179c7ba7aaf758704439ef475), exactly as .imd/reads/oracle.json pins it: What air temperature, in whole degrees Celsius, did the last routine METAR for KDEN (Denver International Airport, Denver, Colorado) issued at or before 17:00 UTC on 23 September 2026 (1:00 PM Eastern Daylight Time) report? Answer type: uint256. Evidence: panel. Definitions the requester fixed: - answer: the temperature in whole degrees Celsius as a non-negative whole number, taken from the temperature/dew-point group in the body of that METAR (for example 26 from "26/20"), not the tenths in the T-group remarks and not converted to Fahrenheit - subject: The weather observation at KDEN (Colorado) on 23 September 2026. "The last routine METAR issued at or before 17:00 UTC" means the report of type METAR (not SPECI) whose observation time (the DDHHMMZ group) is the latest at or before 231700Z, typically about 1651Z-1656Z. The pinned chain and window of this request only timestamp it; the answer is a recorded weather observation, not a reading taken at the pinned block. - source: Answer from the archived METAR text itself, read from a public archive (aviationweather.gov data API, Iowa Environmental Mesonet ASOS archive, Ogimet, or NOAA/NWS observation history), quote the raw report in your notes, and name the source. - missing: If you cannot find that report, report that; do not estimate from a forecast, a nearby station, or an hourly summary. Three steps: (1) read one or two sources that state the fact and note which; (2) write artifacts/answer.json with recipe kind "panel" and the source; (3) run node .imd/reads/skills/oracle-assess/scripts/check-answer.mjs and fix what it prints. Nothing else needs reading first: the brief above is in .imd/reads/oracle.json, and .imd/reads/skills/oracle-assess/REFERENCE.md lists the recipe's fields if the checker asks for one.
VERDICT: paths and tree verified; no suite was run for this kind of work
Wrote [artifacts/answer.json](/home/imd/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json) with **18°C** from the KDEN 231653Z METAR archived by the [Iowa Environmental Mesonet](https://mesonet.agron.iastate.edu/cgi-bin/request/asos.py?station=DEN&data=metar&sts=2026-09-23T16:30Z&ets=2026-09-23T17:05Z&tz=UTC&format=comma&latlon=no&elev=no&missing=empty&trace=T&direct=no&report_type=1%2C2). The required checker printed `ok`.
The last routine report was at 231653Z: `METAR KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111`. Its body temperature group reports **18°C**. I recorded the source and raw report in [artifacts/answer.json](/home/imd/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json). The [Aviation Weather Center METAR API](https://aviationweather.gov/api/data/metar?ids=KDEN&format=raw&date=2026-09-23T17%3A00%3A00Z&hours=1.5) returned that report and the earlier 231553Z report. The required checker printed `ok`.
The answer is **18°C**. IEM’s archive reports the 16:53Z METAR with temperature/dew-point group `18/11`; the later 16:55Z row is an AUTO observation. [IEM archive query](https://mesonet2.agron.iastate.edu/cgi-bin/request/asos.py?station=KDEN&data=metar&year1=2026&month1=9&day1=23&hour1=16&minute1=0&year2=2026&month2=9&day2=23&hour2=17&minute2=0&tz=UTC&format=comma) Wrote [artifacts/answer.json](/home/levi/imd/p6/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json). The required checker printed `ok`.
The last routine KDEN METAR at or before 17:00 UTC was the **16:53Z** report. Its body temperature/dew-point group, `18/11`, gives an air temperature of **18°C**. Source: [Aviation Weather Center METAR data API](https://aviationweather.gov/api/data/metar?ids=KDEN&format=raw&hours=48). I wrote [artifacts/answer.json](/Users/zhuminquan/.identitymd-2/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json). The required checker returned `ok`.
The reported temperature is **18°C**. The latest routine report at or before 17:00Z was `METAR KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111`; its temperature/dew-point group is `18/11`. Source: [Iowa Environmental Mesonet ASOS archive query](https://mesonet.agron.iastate.edu/cgi-bin/request/asos.py?station=DEN&data=metar&year1=2026&month1=9&day1=23&year2=2026&month2=9&day2=24&tz=UTC&format=comma&latlon=no&elev=no&missing=empty&trace=T&direct=no&report_type=3). The IEM describes its archive as covering METAR/ASOS data from 1900 to present. [IEM archive information](https://mesonet.agron.iastate.edu/info/datasets/metar.html) Wrote [artifacts/answer.json](/Users/hyperstition/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json). The supplied checker printed `ok`.
The archived routine METAR is `KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111`. Its body temperature group reports **18°C**. I wrote the answer and source details to [artifacts/answer.json](/home/worker/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json). The required checker prints `ok`.
The archived 1653Z routine METAR reports **18°C** in its `18/11` temperature/dew-point group. I recorded the raw report and Aviation Weather Center API source in [artifacts/answer.json](</home/worker/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json>). The checker passed: `ok`.
The last routine report by 17:00Z was at 16:55Z: `KDEN 231655Z AUTO 23004KT 10SM FEW090 SCT110 18/11 A3018 RMK T01800110 MADISHF`. Its temperature group reports **18°C**. Source: [Iowa Environmental Mesonet ASOS archive](https://mesonet.agron.iastate.edu/cgi-bin/request/asos.py?station=DEN&data=all&year1=2026&month1=9&day1=23&year2=2026&month2=9&day2=24&tz=Etc%2FUTC&format=onlycomma&latlon=no&elev=no&missing=M&trace=T&direct=no&report_type=1). Wrote [artifacts/answer.json](/home/imd2/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json). The required checker printed `ok`.
Recorded **18°C** from the `18/11` temperature/dew-point group in the 231653Z routine METAR. The raw report and source URL are in [answer.json](/root/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json). The checker printed `ok`.
The last qualifying routine METAR was issued at 16:53Z. Its body temperature/dew-point group was `18/11`, so the answer is **18°C**. I recorded the raw report and Aviation Weather Center API source in [artifacts/answer.json](/home/levi/imd/p8/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json). The required checker printed `ok`.
Wrote the answer as **18°C**, from the KDEN METAR observed at 16:53Z. The checker reports `ok`. [artifacts/answer.json](/home/seat13/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json)
Recorded **18°C** from the `18/11` temperature/dew-point group in the 16:53Z METAR. The answer is saved in [artifacts/answer.json](/home/identitymd5/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json), and the required checker prints `ok`.
The answer is **18°C**, from the 16:53Z KDEN report’s `18/11` temperature/dew-point group. The archived report is in the [Aviation Weather Center API response](https://aviationweather.gov/api/data/metar?ids=KDEN&format=raw&date=2026-09-23T17:00:00Z&hours=4). The AWC describes the METAR temperature group as whole degrees Celsius ([data API](https://aviationweather.gov/data/api/), [METAR format](https://aviationweather.gov/help/data/)). [artifacts/answer.json](/root/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json) is written, and the required checker prints `ok`.
**Answer: 18°C.** The archived report was `METAR KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111`; the body group `18/11` gives the requested temperature. I recorded the source and raw report in [artifacts/answer.json](/home/identitymd3/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json). The [Aviation Weather Center METAR API](https://aviationweather.gov/api/data/metar?ids=KDEN&format=raw&date=20260923_1700&hours=1) returned that report, and the required checker printed `ok`.
Created [artifacts/answer.json](/home/identitymd6/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json) with answer `18`, from the `18/11` group in the 16:53Z KDEN METAR returned by AviationWeather.gov’s archive API. The checker prints `ok`.
Checker passes. Answer: KDEN's last routine METAR at/before 1700Z on 2026-09-23 was `231653Z ... 18/11 ...`, reporting **18°C**, sourced from the IEM ASOS archive. `artifacts/answer.json` is written and validated (`ok`).
The answer is **18°C**. The 16:53Z routine METAR reports `18/11`; the later 16:55Z and 17:00Z archive entries are AUTO observations. I wrote [artifacts/answer.json](/root/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json) with the raw report and Iowa Environmental Mesonet archive source. The required checker printed `ok`.
Wrote [artifacts/answer.json](/home/imd-worker/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json) with answer **18°C**, citing the IEM archive’s 1653Z KDEN METAR. The required checker printed `ok`.
Wrote [artifacts/answer.json](/home/seat8/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json) with answer **18°C**. The AWC archive report was `METAR KDEN 231653Z … 18/11 …`; its temperature/dew-point group gives 18°C. [AWC Data API](https://aviationweather.gov/data/api/) The required checker printed `ok`.
Created [artifacts/answer.json](/home/imdworker/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json) with answer **18°C**, from the `18/11` group in the [Aviation Weather Center METAR response](https://aviationweather.gov/api/data/metar?ids=KDEN&format=raw&date=2026-09-23T17:00:00Z). The checker printed `ok`.
The answer is **18°C**, from the `18/11` temperature/dew-point group in the 231653Z routine METAR. The next routine report was at 231753Z, after the cutoff. Source: [Aviation Weather Center METAR archive](https://aviationweather.gov/api/data/metar?ids=KDEN&format=raw&date=2026-09-24T00:00:00Z&hours=24). [artifacts/answer.json](/root/.identitymd-722/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json) is written, and the required checker prints `ok`.
Created [artifacts/answer.json](/home/imd-worker/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json) with **18°C**, read from the `18/11` group in the 16:53Z KDEN METAR. The raw report is in the notes. The checker printed `ok`. ([aviationweather.gov METAR API](https://aviationweather.gov/api/data/metar?ids=KDEN&format=raw&hours=72))
The latest routine report was issued at 16:53Z and reported **18°C** in its `18/11` temperature/dew-point group. The raw report and source are recorded in [answer.json](/home/identitymd/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json). The checker printed `ok`.
Wrote [artifacts/answer.json](/home/seat15/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json) with answer **18°C**. The 1653Z KDEN METAR reports `18/11`; the Iowa Environmental Mesonet archive independently confirms it. The checker printed `ok`.
Completed [artifacts/answer.json](/root/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json). Answer: 18 °C. The checker reports `ok`.
The archived KDEN report at 16:53Z was `METAR KDEN 231653Z ... 18/11 ...`; the reported temperature is **18°C**. The answer is saved in [artifacts/answer.json](/home/seat12/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json), and the required checker printed `ok`. Source: [Aviation Weather Center METAR API](https://aviationweather.gov/api/data/metar?ids=KDEN&format=raw&hours=48).
Completed [artifacts/answer.json](/root/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json). Answer: 18 °C. The supplied checker reports `ok`.
The last routine KDEN METAR at or before 17:00Z was issued at 16:53Z and reported `18/11`, so the answer is **18°C**. I recorded the raw report and Iowa Environmental Mesonet source in [answer.json](/root/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json). The checker printed `ok`.
Created [artifacts/answer.json](/home/identitymd7/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json) with answer **18°C** and the archived 231653Z METAR. The required checker printed `ok`.
Clean status (artifacts/ is untracked/gitignored, as expected). Checker prints `ok`. Answer: **18°C**, from KDEN METAR 231653Z ("18/11") via the IEM ASOS archive — the last routine METAR at or before 231700Z. Written to `artifacts/answer.json`.
Created [artifacts/answer.json](/root/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json) with answer `18` °C, sourced from IEM’s archived `KDEN 231653Z` METAR. Validator result: `ok`.
artifacts/answer.json is untracked (correct — it's a named output, delivered separately, not force-added) and git status shows clean otherwise. The answer: **18°C**, from IEM ASOS archive's routine METAR `KDEN 231653Z ... 18/11 ...`, checker prints `ok`.
Completed [artifacts/answer.json](/root/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json) with answer `18` (°C), supported by the archived IEM raw METAR. Validation passed: `ok`.
The last routine METAR for KDEN at or before 17:00 UTC on 23 September 2026 reported 18 °C. I wrote that to `artifacts/answer.json`, and the checker prints `ok`. The raw report, from the Iowa Environmental Mesonet ASOS archive (station DEN), is: `KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` The temperature is the 18 in the `18/11` group. The next report, `231753Z`, is after 17:00 UTC, so it doesn't count. I read only this one archive, not a second source. The recipe is kind `panel` with that archive as the source.
Completed [artifacts/answer.json](/root/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json). Answer: `18` °C. The validator prints `ok`.
Completed [artifacts/answer.json](/root/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json). Answer: 18°C. Validation passed: `ok`.
Created [artifacts/answer.json](/root/.identitymd/work/e0f0c2ef-e475-4c56-826a-c44b16e0b78b/26d7118a-d77d-4854-9f55-68e89b8f5b40/artifacts/answer.json) with answer `18` °C, citing the archived 231653Z KDEN METAR. Validation passed: `ok`.
The checker prints `ok`. Answer: **18°C**, from METAR `KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` — the last routine METAR at/before 1700Z, confirmed identically via both aviationweather.gov's Data API and the Iowa Environmental Mesonet ASOS archive. `artifacts/answer.json` is written and validated.
Checker prints `ok`. Answer: 18°C, from the KDEN 231653Z METAR ("18/11") via the IEM ASOS archive — the last routine METAR at or before 17:00Z on 2026-09-23. `artifacts/answer.json` is written and validated.
Checker prints `ok`. The last routine METAR for KDEN at or before 1700Z on 2026-09-23 was `KDEN 231653Z ... 18/11 ...` (IEM ASOS archive), so the answer is 18°C, written to `artifacts/answer.json`.
Checker prints `ok` and git status shows no unexpected files. Answer: KDEN's 1653Z METAR (18/11) reported 18°C, written to `artifacts/answer.json`.
Checker prints `ok`. Answer: 18°C, from METAR KDEN 231653Z 18/11, confirmed via both aviationweather.gov and IEM ASOS archive.
Checker prints `ok`. The routine METAR KDEN 231653Z (AO2/SLP/T-group present, unlike the intervening 5-minute AUTO obs) reported `18/11`, so answer = 18°C. `artifacts/answer.json` is written with the panel recipe, source, and definitions.
Checker prints `ok`. Answer: **18°C**, from the KDEN 231653Z METAR (`18/11` group) via the IEM ASOS archive — written to `artifacts/answer.json`.
The answer is 18 °C. `artifacts/answer.json` is written and `check-answer.mjs` prints `ok`. The report is the 16:53 UTC METAR from the Iowa Environmental Mesonet ASOS archive (station DEN, routine METAR reports only): `KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` It is the latest routine METAR at or before 17:00 UTC. The temperature group reads 18/11. The previous report (15:53) read 17/11, and the next (17:53) falls after 17:00. The checker rejected the first draft because the `window` keys were in the wrong order. I reordered them to match `oracle.json`. The recipe is kind `panel`, with the archive named as the source and the raw report quoted in `notes`.
The KDEN temperature is 18 °C. `artifacts/answer.json` is written, and the checker prints `ok`. The report is the 16:53 UTC METAR, read from the Iowa Environmental Mesonet ASOS archive (station DEN): `KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` It is the latest routine METAR at or before 17:00 UTC. The next one in the archive is 231753Z, which is after the cutoff. I took the 18 from the `18/11` group in the body, not the tenths in the T-group remark. The recipe kind is `panel`, with the source named. I read only that one archive and did not cross-check a second source.
The answer is 18 °C, and `artifacts/answer.json` is written. The checker prints `ok` for it. The last routine METAR at or before 17:00 UTC is the 231653Z report, from the Iowa Environmental Mesonet ASOS archive (station DEN). The raw report reads: `KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` The temperature group is 18/11, so 18 °C. I used the archive's routine-METAR listing and only compared it to the next report (231753Z), which falls after the cutoff. I didn't cross-check a second archive. The recipe is kind `panel` with that source named. The window is copied from `oracle.json`, with the key order the checker requires.
The answer is 18 °C, and `artifacts/answer.json` is written; `check-answer.mjs` prints ok for it. The last routine METAR for KDEN at or before 17:00 UTC on 23 September 2026 is the 1653Z report. A 1753Z METAR also exists, but it falls after the cutoff. The raw report reads: `METAR KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` The temperature/dew-point group is 18/11, so the air temperature is 18 °C. I read it from the aviationweather.gov data API. I did not cross-check it against a second archive. The answer is recorded as the string "18". The recipe is kind "panel" with that source. The request id, chain and window match `oracle.json`.
The answer is 18 °C, and `check-answer.mjs` prints ok for `artifacts/answer.json`. The source is the Iowa Environmental Mesonet ASOS archive (routine METAR, station DEN). The last routine METAR at or before 17:00 UTC on 23 September 2026 was: `KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` The temperature/dew-point group in the body reads 18/11, so the temperature is 18. The recipe is kind `panel`, naming that archive as its source. The raw report and source are also quoted in `notes`. The checker's first run rejected the file because the `window` keys were in the wrong order. I reordered them to match `.imd/reads/oracle.json`.
The answer is 18 °C, and `artifacts/answer.json` is written; `check-answer.mjs` prints `ok` for it. The last routine METAR at or before 17:00 UTC on 23 September 2026 is the 231653Z report. I read it from the Iowa Environmental Mesonet ASOS archive (station DEN, report type METAR): `KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` The temperature/dew-point group is 18/11, so the temperature is 18. The recipe kind is `panel`, with that archive as the source. I checked only this one archive, not a second one. The checker first rejected the answer because the window's keys weren't in the order the brief uses (`toBlock`, `fromBlock`, `toBlockHash`). I reordered them and it now passes.
The answer is 18 °C, and `artifacts/answer.json` is written; `check-answer.mjs` prints ok for it. The last routine METAR at or before 17:00 UTC was the 231653Z report. I read it from the Iowa Environmental Mesonet ASOS archive (station DEN, METAR report types only): `KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` The 18 comes from the `18/11` group in the body, not the T-group tenths. I did not check a second source; the recipe is `panel` and names IEM as the source. The first check failed because the window keys were in the wrong order (`toBlock` must come before `fromBlock`). I reordered them without changing any values.
The answer is 18 °C, and `check-answer.mjs` prints `ok` for `artifacts/answer.json`. The source is the aviationweather.gov data API. The last routine METAR at or before 17:00 UTC on 23 September 2026 is the 1653Z report: `METAR KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` Its temperature/dew-point group is 18/11, which gives 18. The next report, 231753Z, is after 17:00 UTC. The recipe kind is `panel`, with that API query as the source. The raw report is quoted in `notes`. The checker first rejected the file because the `window` keys were in a different order from `oracle.json`. I reordered them to match, and it then passed.
The answer is 18 °C, and `artifacts/answer.json` passes `check-answer.mjs` (it printed `ok`). The source is the aviationweather.gov data API. The last routine METAR at or before 17:00 UTC on 23 September is the 231653Z report: `METAR KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` The temperature/dew-point group is 18/11, so the temperature is 18. The next report, 231753Z, falls after 17:00 and is excluded. The window and request id are copied exactly from `oracle.json`, and the recipe kind is `panel`. The checker rejected my first draft only because the `window` keys were in a different order from `oracle.json`. I reordered them.
The answer is 18 °C, and `artifacts/answer.json` is written. `check-answer.mjs` prints ok for it. The source is the aviationweather.gov data API. The last routine METAR at or before 17:00 UTC on 23 September is the 231653Z report: `METAR KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` Its temperature/dew-point group is 18/11. The next routine report, 231753Z, falls after 17:00 UTC, and there was no SPECI in between. The recipe kind is `panel`, with that API as its source. The first check failed because the `window` keys were in the wrong order. I reordered them to match `oracle.json`.
The answer is 18 °C, and `artifacts/answer.json` is written; the checker prints `ok`. The last routine METAR for KDEN at or before 17:00 UTC on 23 September 2026 was issued at 16:53Z. I read it from the Iowa Environmental Mesonet ASOS archive (station DEN, routine reports only): `KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` The temperature/dew-point group is 18/11, so the temperature is 18. That was the only routine report the archive returned between 16:00Z and 17:10Z. I did not cross-check it against a second source. The aviationweather.gov query I ran alongside it returned nothing. The file uses recipe kind `panel`, names the Mesonet archive as its source, and carries the request id, chain and window from `oracle.json`.
The answer is 18 °C, and `check-answer.mjs` prints ok for `artifacts/answer.json`. The last routine METAR at or before 17:00 UTC on 23 September 2026 is the 231653Z report from KDEN, read from the aviationweather.gov data API: `METAR KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` The temperature/dew-point group is 18/11, so the temperature is 18. The next report, 231753Z, is after the cutoff. The recipe kind is `panel`, with the aviationweather.gov query URL as its source. The checker first rejected the window because its key order differed from `oracle.json`, so I reordered the keys to match.
The answer is 18 °C, and `artifacts/answer.json` is written; the checker prints ok for it. The report is the routine METAR for KDEN observed at 231653Z, from the aviationweather.gov data API: `METAR KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` The temperature/dew-point group reads 18/11. The next routine report is 231753Z, which falls after 17:00 UTC, so 231653Z is the last one at or before it. I used only that one source, and there was no SPECI between the two reports. The recipe kind is `panel`, with the aviationweather.gov query URL as its source. The window in the file uses the same key order as `.imd/reads/oracle.json`, which the checker requires.
The answer is 18 °C, and `artifacts/answer.json` is written; the checker printed `ok`. The report is the last routine METAR at or before 231700Z. I read it from the aviationweather.gov data API: `METAR KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` The temperature/dew-point group is 18/11, so the temperature is 18. The recipe kind is `panel`, with that API URL as the source. The first checker run rejected the window because the keys were in the wrong order. I reordered them to match `oracle.json`, and the checker then passed.
The last routine METAR for KDEN at or before 17:00 UTC on 23 September 2026 reported 18 °C, and I wrote that to `artifacts/answer.json`. `check-answer.mjs` prints `ok` for it. The source is the Iowa Environmental Mesonet ASOS archive (station DEN). I didn't cross-check a second source; the aviationweather.gov query I tried returned no report. The raw report is: `KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` The temperature/dew-point group is 18/11, so the answer is 18. The next report in the archive is 231753Z, which is after the cutoff. The file uses recipe kind `panel`, with the chain and window copied from `.imd/reads/oracle.json`. The first version failed the checker because the window keys were in the wrong order, and I reordered them.
The answer is 18 °C, and `artifacts/answer.json` is written; the checker prints `ok` for it. The last routine METAR at or before 231700Z was issued at 1653Z. I read it from the Iowa Environmental Mesonet ASOS archive (station DEN): `KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` The temperature/dew-point group in the body is 18/11. The file uses recipe kind `panel`. I checked only that one source, not a second one. The checker first rejected the file because `window` listed `fromBlock` before `toBlock`. I reordered the keys to match `oracle.json` and it passed.
The answer is 18 °C, and `check-answer.mjs` prints ok for `artifacts/answer.json`. The last routine METAR at or before 17:00 UTC on 23 September 2026 is the 231653Z report. The next routine one, 231753Z, is after the cutoff, and no SPECI is involved. I read it from the aviationweather.gov data API: `METAR KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` The temperature group is 18/11, so the answer is 18. The file uses a `panel` recipe with that source. The request id, chain and window are copied from `oracle.json`; the checker's first run rejected the window because its keys were in the wrong order, and I fixed that. I used only one source, aviationweather.gov, and did not cross-check it against Iowa Environmental Mesonet or Ogimet.
I wrote `artifacts/answer.json` with the answer **18** °C, and `check-answer.mjs` prints `ok` for it. The last routine METAR for KDEN at or before 17:00 UTC on 23 September is the 231653Z report. The raw text, from the aviationweather.gov data API, is: `METAR KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` The next METAR is 231753Z, which is after 17:00. The temperature/dew-point group in the body reads 18/11, so the temperature is 18. It is not the tenths from the T-group and not converted to Fahrenheit. I read only the one source and did not cross-check it against Iowa Environmental Mesonet or Ogimet. The recipe is `panel` with that API URL as the source. The window is copied from `oracle.json`. The checker first rejected it because the window keys were in a different order than in `oracle.json`, and I reordered them.
The answer is 18 °C, and `artifacts/answer.json` is written; the checker printed `ok`. The last routine METAR at or before 231700Z was issued at 16:53 UTC. I read it from the Iowa Environmental Mesonet ASOS archive: `KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` The temperature/dew-point group is 18/11, so the temperature is 18. I only used that one source and did not cross-check a second. The recipe kind is `panel`, and the request id, chain and window are copied from `oracle.json`.
`artifacts/answer.json` is written and the checker prints `ok`. The answer is 18 °C. The report is the routine METAR from 16:53 UTC on 23 September 2026, read from the aviationweather.gov data API: `METAR KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` The temperature group reads 18/11. No SPECI or later METAR falls between 16:53 and 17:00 UTC, and the next routine report is 17:53 UTC. The recipe kind is `panel`, with that API URL as the source. The checker first rejected the file because the `window` keys were in a different order from the brief. I reordered them to match, and it then passed.
The answer is 18 °C, and `check-answer.mjs` prints `ok` for `artifacts/answer.json`. The source is the Iowa Environmental Mesonet ASOS archive (station DEN). The last routine METAR at or before 231700Z is the 1653Z report: `KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` Its temperature/dew-point group is 18/11, so the temperature is 18. The next report, 1753Z, is after the cutoff. I used one source only; the aviationweather.gov query I tried returned an error. The file uses recipe kind `panel`, with the request id, chain and window copied from `oracle.json`. The first write failed the checker because the window keys were in the wrong order, and I reordered them.
The answer is 18 °C, and `check-answer.mjs` prints ok for `artifacts/answer.json`. The source is the aviationweather.gov data API. The last routine METAR at or before 17:00 UTC on 23 September was issued at 16:53 UTC. Its raw text is: `METAR KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` The temperature group in the body is `18/11`. The next report, at 17:53 UTC, falls after the cutoff, so I did not use it. I read only aviationweather.gov, not a second archive. The recipe is kind `panel` with that source, and the request id, chain and window are copied from `.imd/reads/oracle.json`. The checker first rejected the file because it wants the window keys in the order `toBlock`, `fromBlock`, `toBlockHash`. I reordered them and it then passed.
The answer is 18 °C, and `artifacts/answer.json` is written; `check-answer.mjs` prints `ok`. The last routine METAR at or before 17:00 UTC on 23 September 2026 is the 231653Z report from the Iowa Environmental Mesonet ASOS archive: `KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` The temperature/dew-point group reads 18/11, so the temperature is 18. The nearest later report, 231753Z, falls after the cutoff. The recipe is kind `panel`, with the IEM archive as the named source.
I wrote `artifacts/answer.json` with the answer 18, and `check-answer.mjs` prints ok for it. The last routine METAR at or before 17:00 UTC on 23 September 2026 was the 1653Z report. Its temperature/dew-point group reads 18/11. The source is the aviationweather.gov data API, and the raw report is: `METAR KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` The recipe is kind `panel` with that API query as its source. The checker first rejected the file because the `window` keys were in a different order from `oracle.json`. I reordered them to match and re-ran it.
The answer is 18 °C, and `check-answer.mjs` prints ok for `artifacts/answer.json`. The last routine METAR for KDEN at or before 17:00 UTC on 23 September 2026 is the 231653Z report. I read it from the aviationweather.gov data API (`https://aviationweather.gov/api/data/metar?ids=KDEN&format=raw&hours=48`). The raw report is: `METAR KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` Its temperature/dew-point group is 18/11, so the temperature is 18. The next report, 231753Z, falls after 17:00 UTC. I used only that one source; the notes in the file quote the raw report and name it. The file uses recipe kind `panel`. Its `window` copies the block range and closing hash from `oracle.json`, in the same key order (`toBlock`, `fromBlock`, `toBlockHash`).
The answer is 18 °C, and `artifacts/answer.json` is written. The checker prints `ok`. The last routine METAR at or before 17:00 UTC on 23 September 2026 is the 1653Z report, from the aviationweather.gov data API: `METAR KDEN 231653Z 23006KT 10SM FEW090 SCT110 BKN140 BKN220 18/11 A3018 RMK AO2 SLP152 T01830111` The temperature/dew-point group reads 18/11, so the temperature is 18. The next report in that feed is 231753Z, which is after the cutoff. No SPECI report affected the choice. The file uses a `panel` recipe naming that source. The window and request id are copied from `.imd/reads/oracle.json`.
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