{
 "ocl_version": "0.1.0",
 "name": "Strada di Mortella",
 "slug": "strada-di-mortella",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.50184211372084,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 4.0,
   "end_distance_m": 6.0,
   "start_elevation_m": 255.81065803366118,
   "end_elevation_m": 256.3206948759356,
   "min_gradient_pct": -2.8007092091883123
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.704140612686842,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 5.0,
   "end_distance_m": 8.0,
   "start_elevation_m": 256.04893307956456,
   "end_elevation_m": 256.79005729794517,
   "min_gradient_pct": -1.4876697876445633
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.232509325092906,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 4.0,
   "end_distance_m": 9.0,
   "start_elevation_m": 255.81065803366118,
   "end_elevation_m": 257.02228349991583,
   "min_gradient_pct": -1.2500716575357274
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.431499245620557,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 4.0,
   "end_distance_m": 14.0,
   "start_elevation_m": 255.81065803366118,
   "end_elevation_m": 258.15380795822324,
   "min_gradient_pct": 0.3844892818756307
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.77999258652349,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 3.0,
   "end_distance_m": 23.0,
   "start_elevation_m": 255.6434823854324,
   "end_elevation_m": 259.9994809027371,
   "min_gradient_pct": 2.7605908575586113
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.046472683992192,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 3.0,
   "end_distance_m": 28.0,
   "start_elevation_m": 255.6434823854324,
   "end_elevation_m": 260.90510055643045,
   "min_gradient_pct": 3.203993202447691
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.906892956778847,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2.0,
   "end_distance_m": 52.0,
   "start_elevation_m": 255.45204126274484,
   "end_elevation_m": 264.90548774113427,
   "min_gradient_pct": 4.080479763435733
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.601150079127365,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 532.0,
   "end_distance_m": 632.0,
   "start_elevation_m": 300.7376230705029,
   "end_elevation_m": 316.33877314963024,
   "min_gradient_pct": 4.5410922809900285
  }
 ],
 "shape": {
  "ascent_concentration": 0.311,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 99.0,
  "shape_class": "sustained"
 },
 "length_m": 1086.8000000000034,
 "start_elevation_m": 255.5080554469286,
 "end_elevation_m": 348.56688620044133,
 "endpoint_gain_m": 93.05883075351272,
 "overall_gradient_pct": 8.562645450267983,
 "accumulated_ascent_m": 93.34384625568907,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.232509325092906,
   "start_distance_m": 4.0,
   "end_distance_m": 9.0,
   "midpoint_distance_m": 6.5,
   "start_elevation_m": 255.81065803366118,
   "end_elevation_m": 257.02228349991583,
   "start_xy": [
    1194401.1847449995,
    6184390.69670915
   ],
   "end_xy": [
    1194404.6069262489,
    6184387.051345589
   ]
  },
  "max_10m": {
   "gradient_pct": 23.431499245620557,
   "start_distance_m": 4.0,
   "end_distance_m": 14.0,
   "midpoint_distance_m": 9.0,
   "start_elevation_m": 255.81065803366118,
   "end_elevation_m": 258.15380795822324,
   "start_xy": [
    1194401.1847449995,
    6184390.69670915
   ],
   "end_xy": [
    1194408.0291074982,
    6184383.405982028
   ]
  },
  "max_20m": {
   "gradient_pct": 21.77999258652349,
   "start_distance_m": 3.0,
   "end_distance_m": 23.0,
   "midpoint_distance_m": 13.0,
   "start_elevation_m": 255.6434823854324,
   "end_elevation_m": 259.9994809027371,
   "start_xy": [
    1194400.5003087495,
    6184391.425781863
   ],
   "end_xy": [
    1194414.1890337474,
    6184376.8443276165
   ]
  },
  "max_25m": {
   "gradient_pct": 21.046472683992192,
   "start_distance_m": 3.0,
   "end_distance_m": 28.0,
   "midpoint_distance_m": 15.5,
   "start_elevation_m": 255.6434823854324,
   "end_elevation_m": 260.90510055643045,
   "start_xy": [
    1194400.5003087495,
    6184391.425781863
   ],
   "end_xy": [
    1194417.6112149968,
    6184373.198964055
   ]
  },
  "max_50m": {
   "gradient_pct": 18.906892956778847,
   "start_distance_m": 2.0,
   "end_distance_m": 52.0,
   "midpoint_distance_m": 27.0,
   "start_elevation_m": 255.45204126274484,
   "end_elevation_m": 264.90548774113427,
   "start_xy": [
    1194399.8158724997,
    6184392.154854575
   ],
   "end_xy": [
    1194433.0312410304,
    6184354.817216669
   ]
  },
  "max_100m": {
   "gradient_pct": 15.601150079127365,
   "start_distance_m": 532.0,
   "end_distance_m": 632.0,
   "midpoint_distance_m": 582.0,
   "start_elevation_m": 300.7376230705029,
   "end_elevation_m": 316.33877314963024,
   "start_xy": [
    1194479.2567709151,
    6184169.105061434
   ],
   "end_xy": [
    1194409.6291854712,
    6184103.263576728
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -1.2500716575357274,
   "start_distance_m": 636.0,
   "end_distance_m": 641.0,
   "midpoint_distance_m": 638.5,
   "start_elevation_m": 316.45260893492895,
   "end_elevation_m": 316.39010535205216,
   "start_xy": [
    1194407.1204198136,
    6184100.148116108
   ],
   "end_xy": [
    1194403.9844627418,
    6184096.253790333
   ]
  },
  "min_10m": {
   "gradient_pct": 0.3844892818756307,
   "start_distance_m": 632.0,
   "end_distance_m": 642.0,
   "midpoint_distance_m": 637.0,
   "start_elevation_m": 316.33877314963024,
   "end_elevation_m": 316.3772220778178,
   "start_xy": [
    1194409.6291854712,
    6184103.263576728
   ],
   "end_xy": [
    1194403.5403328836,
    6184095.590159424
   ]
  },
  "min_20m": {
   "gradient_pct": 2.7605908575586113,
   "start_distance_m": 631.0,
   "end_distance_m": 651.0,
   "midpoint_distance_m": 641.0,
   "start_elevation_m": 316.29042455702387,
   "end_elevation_m": 316.8425427285356,
   "start_xy": [
    1194410.2563768856,
    6184104.042441884
   ],
   "end_xy": [
    1194412.301728236,
    6184097.648787967
   ]
  },
  "min_25m": {
   "gradient_pct": 3.203993202447691,
   "start_distance_m": 631.0,
   "end_distance_m": 656.0,
   "midpoint_distance_m": 643.5,
   "start_elevation_m": 316.29042455702387,
   "end_elevation_m": 317.0914228576358,
   "start_xy": [
    1194410.2563768856,
    6184104.042441884
   ],
   "end_xy": [
    1194417.1691700984,
    6184098.7924704915
   ]
  },
  "min_50m": {
   "gradient_pct": 4.080479763435733,
   "start_distance_m": 631.0,
   "end_distance_m": 681.0,
   "midpoint_distance_m": 656.0,
   "start_elevation_m": 316.29042455702387,
   "end_elevation_m": 318.33066443874174,
   "start_xy": [
    1194410.2563768856,
    6184104.042441884
   ],
   "end_xy": [
    1194441.5063794104,
    6184104.5108831115
   ]
  },
  "min_100m": {
   "gradient_pct": 4.5410922809900285,
   "start_distance_m": 65.0,
   "end_distance_m": 165.0,
   "midpoint_distance_m": 115.0,
   "start_elevation_m": 266.2958107170696,
   "end_elevation_m": 270.83690299805966,
   "start_xy": [
    1194444.3503887546,
    6184349.363187616
   ],
   "end_xy": [
    1194534.996800128,
    6184313.617752912
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.50184211372084,
   "start_distance_m": 4.0,
   "end_distance_m": 6.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 255.81065803366118,
   "end_elevation_m": 256.3206948759356,
   "start_xy": [
    1194401.1847449995,
    6184390.69670915
   ],
   "end_xy": [
    1194402.5536174993,
    6184389.238563726
   ]
  },
  "max_3m": {
   "gradient_pct": 24.704140612686842,
   "start_distance_m": 5.0,
   "end_distance_m": 8.0,
   "midpoint_distance_m": 6.5,
   "start_elevation_m": 256.04893307956456,
   "end_elevation_m": 256.79005729794517,
   "start_xy": [
    1194401.8691812493,
    6184389.967636438
   ],
   "end_xy": [
    1194403.922489999,
    6184387.780418301
   ]
  }
 },
 "diagnostic_note": "Windows <=3 m are at raster-noise scale (1-sigma raster noise alone is roughly +/-7 pp at 2 m and +/-5 pp at 3 m on a 1 m DTM). Diagnostic use only: never a headline or ranking value.",
 "quality_summary": {
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.068,
   "obstruction_max_height_m": 13.05,
   "flagged_windows_m": []
  },
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "33abfff569d4360542e616d0d42c1b94d0a711fa",
   "code_git_dirty": "false",
   "analysis_version": "0.1.0",
   "analysis_config_digest": "sha256:8c94015b54267da4",
   "python": "3.14.4",
   "numpy": "2.5.3",
   "rasterio": "1.5.1",
   "pyproj": "3.8.0",
   "laspy": "2.7.0",
   "shapely": "2.1.2",
   "pyosmium": "4.3.1",
   "libosmium": "2.23.1",
   "gdal": "3.12.4",
   "proj": "9.8.1",
   "run_id": "fr-co2",
   "road_pbf": "block-batch-fr-co2.osm.pbf",
   "region_key": "france",
   "crs": "EPSG:2154",
   "elevation_provider_key": "ign-lidarhd",
   "tile_index": "wms-grid",
   "authority": "bdtopo",
   "registry_pbf": "france-vosges-2026-09-16.osm.pbf",
   "tile_index_snapshot": "sha256:2a717d675f2607cc"
  },
  "sample_interval_m": 1.0,
  "interpolation": "bilinear",
  "smoothing": "none",
  "gradient_windows_m": [
   5.0,
   10.0,
   20.0,
   25.0,
   50.0,
   100.0
  ],
  "diagnostic_windows_m": [
   2.0,
   3.0
  ],
  "elevation_crs": "EPSG:2154",
  "elevation_resolution_m": 0.5,
  "elevation_tiles": [
   "data/cache/fr/ign-lidarhd_dtm_E1194-N6183_0m5@21LHDCorseUS-2025-04-02.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1194-N6184_0m5@21LHDCorseUS-2025-04-02.tif"
  ],
  "calculated_at": "2026-09-25T00:50:14+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-co2.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-co2",
  "elevation_provider": "IGN LiDAR HD MNT 0.5 m",
  "elevation_licence": "Licence Ouverte / Open Licence 2.0 (Etalab) \u2014 \u00a9 IGN, LiDAR HD (MNT/MNS), data.geopf.fr; reproduction autoris\u00e9e avec mention de la source et de la date",
  "elevation_dataset": "LiDAR HD \u2014 MNT (sol) et MNS (surface), 0,50 m (Institut national de l'information g\u00e9ographique et foresti\u00e8re), RGF93 / Lambert-93 EPSG:2154, altitudes IGN69",
  "elevation_vertical_datum": "IGN69",
  "elevation_tile_ids": [
   "E1194-N6183",
   "E1194-N6184"
  ],
  "elevation_blocks": [
   "21LHDCorseUS@2025-04-02"
  ],
  "ign_dalles": [
   "LHD_FXX_1194_6184_MNT_O_0M50_LAMB93_IGN78",
   "LHD_FXX_1194_6185_MNT_O_0M50_LAMB93_IGN78"
  ],
  "ign_missions": [
   "21LHDCorseUS"
  ],
  "ign_editions": [
   "2025-04-02"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1194_6184_MNT_O_0M50_LAMB93_IGN78": "2025-04-02",
   "LHD_FXX_1194_6185_MNT_O_0M50_LAMB93_IGN78": "2025-04-02"
  },
  "route_cut_m": 1086.8,
  "climb_origin": "discovered",
  "structure_own_ways": 8,
  "carriageway": {
   "stations": 50,
   "stations_resolved": 50,
   "width_median_m": 4.88,
   "width_p10_m": 3.5,
   "width_min_m": 1.5,
   "width_max_m": 11.0,
   "bounded_share": 0.58,
   "unbounded_share": 0.42,
   "confidence_median": 0.738,
   "width_median_bounded_m": 4.5,
   "window_m": [
    3.0,
    28.0
   ],
   "width_at_max25_m": 4.0,
   "window_stations": 7,
   "single_track": false,
   "single_track_rule": "PROVISIONAL (2026-09-15): width_p10_m <= 3.0 m with bounded_share >= 0.6; recorded, not a rule",
   "status": "ok",
   "source": "dtm",
   "station_m": 25.0,
   "window_station_m": 5.0,
   "halfwidth_m": 6.0,
   "step_m": 0.25,
   "level_tol_m": 0.12,
   "break_min_m": 0.3,
   "stations_failed": 0,
   "hedge_to_hedge": {
    "stations": 50,
    "stations_resolved": 50,
    "width_median_m": 4.88,
    "width_p10_m": 0.98,
    "width_min_m": 0.5,
    "width_max_m": 11.5,
    "bounded_share": 0.82,
    "unbounded_share": 0.18,
    "confidence_median": 1.0,
    "width_median_bounded_m": 4.5,
    "window_m": [
     3.0,
     28.0
    ],
    "width_at_max25_m": 4.5,
    "window_stations": 7,
    "status": "ok",
    "source": "dsm",
    "station_m": 25.0,
    "window_station_m": 5.0,
    "halfwidth_m": 6.0,
    "step_m": 0.25,
    "level_tol_m": 0.5,
    "break_min_m": 0.3,
    "stations_failed": 0
   }
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Belgod\u00e8re",
  "county": "Haute-Corse",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}