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  "city_name": "Chicago",
  "date": "2026-04-18",
  "unit": "F",
  "station": "KORD",
  "event_end_date": "2026-04-18T12:00:00Z",
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  "resolved_outcome": null,
  "pnl": null,
  "forecast_snapshots": [
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      "best_source": "hrrr"
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  "all_outcomes": [
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