{
  "sample_id": "sample_000013",
  "rgb_tif_path": "source_assets/routing/000013/input/rgb.tif",
  "rgb_preview_path": "source_assets/routing/000013/input/rgb_preview.png",
  "source": "Sentinel-2 L2A",
  "bands": [
    "B04",
    "B03",
    "B02"
  ],
  "acquisition_dates": [
    "2026-04-26T09:50:29.024000Z",
    "2026-03-14T09:50:51.024000Z"
  ],
  "mosaic_item_ids": [
    "S2B_MSIL2A_20260426T095029_R079_T33TWG_20260426T134545",
    "S2A_MSIL2A_20260314T095051_R079_T33TWG_20260314T152211"
  ],
  "cloud_covers": [
    0.004044,
    2.74092
  ],
  "s2_search_label": "+/-30d_cloud10",
  "s2_valid_fraction": 1.0,
  "rgb_nonblack_fraction": 0.9607,
  "gsd_m": 10,
  "chip_size_px": [
    512,
    512
  ],
  "crs": "EPSG:32633",
  "bounds_projected": [
    516568.97516586725,
    4621742.799191241,
    521688.97516586725,
    4626862.799191241
  ],
  "bounds_wgs84": [
    15.199279387146758,
    41.74721057134842,
    15.261045315176398,
    41.793449580230664
  ],
  "center_wgs84": [
    41.77033420111662,
    15.230151321637498
  ],
  "activation_code": "EMSR871",
  "event_name": "Flood in Abruzzo, Molise and Basilicata regions, Italy",
  "event_date": "2026-04-02",
  "countries": [
    {
      "name": "Italy"
    }
  ],
  "product_type": "DEL",
  "product_id": "2537",
  "product_key": "EMSR871_AOI03_DEL_2537",
  "aoi": {
    "name": "San Paolo di Civitate",
    "number": 3
  },
  "start_point": {
    "lat": 41.772175000000004,
    "lon": 15.212573400000002,
    "node": 3680792416
  },
  "selected_shelter": {
    "name": "Madonna del Carmine (del Ponte)",
    "confidence": "low_fallback_public_facility",
    "candidate_id": "C001"
  },
  "network_type": "walk",
  "osm_aoi_buffer_m": 3000,
  "road_buffer_m": 8,
  "flood_risk_buffer_m": 120,
  "walking_speed_kmh": 4.5,
  "k_routes_per_type": 3,
  "routing_ranking_contract": {
    "version": "packaged_composite_edge_cost_v2",
    "risk_score": "length-weighted mean edge flood_risk",
    "fastest_edge_cost": "travel_time_min",
    "safest_edge_cost": "travel_time_min * (1 + 10 * flood_risk)",
    "balanced_edge_cost": "travel_time_min * (1 + 4 * flood_risk)",
    "route_objective": "sum the corresponding edge cost",
    "eligibility": "blocked_edges == 0",
    "tie_break": [
      "eta_min",
      "distance_m",
      "route_id"
    ],
    "graph_search_performed_at_runtime": false,
    "runtime_validation": "recompute metrics and objective from declared candidate geometry and flood-risk road edges"
  }
}