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        "forecast_mae": 2.8834315928899747,
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        "calendar_week_blocks": 10
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      "rain": {
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        "wet_1mm": {
          "hits": 0,
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          "false_alarms": 21,
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    },
    {
      "lead": 14,
      "temperature": {
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        "n": 180,
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        "forecast_mae": 5.478101851851852,
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      },
      "rain": {
        "unit": "mm",
        "n": 180,
        "dates": 60,
        "forecast_mae": 1.2837222222222222,
        "forecast_bias": -0.2905,
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        "mae_skill": -0.5935862068965516,
        "mae_95_interval": [
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        "calendar_week_blocks": 10,
        "wet_1mm": {
          "hits": 0,
          "misses": 24,
          "false_alarms": 27,
          "correct_dry": 129
        }
      }
    }
  ],
  "source_code_sha256": "0183997bc51b77975d17f0e8cf7bb5a7df99571856eb92f7784fb8eb46d6a1c7",
  "legacy_code_sha256": "faeb5dad9b8ef19d027b82b2a0ae46ad168a49b41c56e61b3cbf1e6226eb276d",
  "pairs_sha256": "eefea931b7e56d5bcf8da74d10b07910674e0afcd6537b3cc7472412816b07e2",
  "report_sha256": "aaf241cc0933d949263cbed35914d70fb4965cbc6e6c758ffb6ff5db25fda5a5",
  "published_on": "2026-09-06",
  "scope": "Three Swiss lowland stations; May 1-30 and August 1-30 2026. Not UK summit or complete Mountain Weather forecast accuracy.",
  "observation_source": "https://opendatadocs.meteoswiss.ch/a-data-groundbased/a1-automatic-weather-stations",
  "model_archive": "https://open-meteo.com/en/docs/single-runs-api",
  "interval_caution": "Exploratory 95% percentile intervals from 500 calendar-week block resamples. Pointwise sampling uncertainty, not individual-day limits or simultaneous bands. Baseline uncertainty not plotted. Only two months, not all seasons.",
  "rainfall_evidence_status": {
    "status": "superseded_archive_processing_defect",
    "valid_leads": [],
    "excluded_leads": [
      1,
      2,
      3,
      4,
      5,
      6,
      7,
      8,
      9,
      10,
      11,
      12,
      13,
      14
    ],
    "do_not_use_excluded_leads_for_current_rainfall_accuracy": true,
    "reason": "Includes pre-fix Open-Meteo GFS precipitation beyond forecast hour 120. Wind and temperature results are unchanged.",
    "replacement": "/assets/research/rain-category-postfix.json",
    "fix": "https://github.com/open-meteo/open-meteo/pull/1996"
  }
}