| ## Background |
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| This is level 3 of 5 and continues the work of the earlier levels. The new files for this level are in `workspace/t3/`. The records from the start are in `workspace/t1/`, and the earlier results are in `workspace/t1/results/` to `workspace/t2/results/`. |
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| ## Task |
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| Subject: PJM weather feed |
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| Next is weather. Priya pulled the archive split by model into weather/open-meteo/previous-runs-models/, and NWS Blend station bulletins for some of the big days into weather/nbm/; her notes from Tuesday are in notes/. |
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| Score the feeds at the eight PJM product stations against the station observations we hold, January 2025 to September 2026, at the leads the day-ahead product draws on, station by station and as our standard composite. Sales keeps saying better weather is how we will beat PJM on the hard days, so I also want to see how the feeds did on the hours where PJM's own day-ahead forecast had a large miss in our standards' sense, compared with all other hours. Set the Blend bulletins against the feeds on the same hours too. Then tell me which feed PJM should run on. |
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| In workspace/t3/results/: a workbook with the scores and any gaps you find in the feeds, and one chart I can put on the screen at Thursday's meeting. |
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| Maren |
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| ## Input |
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| - `workspace/t1/`: the records supplied with the work (`company/`, `eia861/`, `eia930/`, `forecasting/`, `github/`, `mail/`, `meetings/`, `projects/`, `reading/`, `weather/`). |
| - `workspace/t2/`: the files that came with level t2 (`ferc714/`, `mail/`, `pudl/`). |
| - `workspace/t3/`: the files that came with level t3 (`notes/`, `weather/`). |
| - `workspace/t1/results/`: the results of level t1. |
| - `workspace/t2/results/`: the results of level t2. |
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| ## Output |
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| - `workspace/t3/results/pjm_weather_feed_scores.xlsx` |
| - `workspace/t3/results/feed_error_chart.png` |
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