{
  "schema": "snowdon-public-worked-example-v1",
  "frame_id": "swc_en-20260908-064107-ec1f39",
  "reference_id": "swc_en-20250619-080243-d95c3d",
  "capture_at": "2026-09-08T06:41:07+00:00",
  "reference_at": "2025-06-19T08:02:43+00:00",
  "east_m": 820,
  "west_m": 590,
  "wind_from": "W",
  "input_day": "2026-09-07",
  "input_cache_cycle": "2026-09-07T12:00:00+00:00",
  "hourly_times": [
    "2026-09-08T06:00:00+00:00",
    "2026-09-08T07:00:00+00:00"
  ],
  "hourly_cloud_bases_m": [
    1026.0,
    500.0
  ],
  "interpolated": true,
  "kind": "saved-d1-replay",
  "source_sha256": "49db95d51ba83872ed50e86bdf24338edb4d72d502a951c9d73ddef8f601c59d",
  "engine_sha256": "7476ee17386d529a041e863847fe989dd913d16f6eff510ec7fc632a4c065dee",
  "cloud_image_sha256": "2c1f347f2b485b043eb605609f00111baf66308697df8e4c0a66cccb0ea3267d",
  "clear_image_sha256": "bea709aeff20476fcb0b4c2b298b34f894b5ba9e08206f908005466c2eb66475",
  "alignment": {
    "dx": 2,
    "dy": 0
  },
  "assisted_review": true,
  "cloud_base_observed_m": null,
  "geometry_status": "provisional",
  "example_selection": "Selected morning illustration with broadly similar forecast heights and apparent cloud contact. Not a representative accuracy sample.",
  "contour_method": "Separate east/west height intersections on mapped terrain more than 5 km from the camera. The centre is left unassigned. These are height contours, not forecast cloud outlines."
}