{
 "ocl_version": "0.1.0",
 "name": "Col de Sal\u00e8se from Vacherie des Erps",
 "slug": "col-de-salese-from-vacherie-des-erps",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 37.213883556887595,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 250.0,
   "end_distance_m": 252.0,
   "start_elevation_m": 1511.7491472349063,
   "end_elevation_m": 1512.493424906044,
   "min_gradient_pct": -339.27025965851954,
   "suppressed_max_gradient_pct": 382.42674495019173,
   "suppressed_location_m": [
    602.0,
    604.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 29.60319365936357,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 250.0,
   "end_distance_m": 253.0,
   "start_elevation_m": 1511.7491472349063,
   "end_elevation_m": 1512.6372430446872,
   "min_gradient_pct": -289.25407013574994,
   "suppressed_max_gradient_pct": 276.03964868555977,
   "suppressed_location_m": [
    601.0,
    604.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.456860090208465,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 3029.0,
   "end_distance_m": 3034.0,
   "start_elevation_m": 1673.9113914978752,
   "end_elevation_m": 1675.1342345023857,
   "min_gradient_pct": -176.349275034122,
   "suppressed_max_gradient_pct": 183.06212478447378,
   "suppressed_location_m": [
    599.0,
    604.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 17.604885651303448,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 3024.0,
   "end_distance_m": 3034.0,
   "start_elevation_m": 1673.3737459372553,
   "end_elevation_m": 1675.1342345023857,
   "min_gradient_pct": -85.13346784816122,
   "suppressed_max_gradient_pct": 92.3522224893577,
   "suppressed_location_m": [
    599.0,
    609.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 14.596442527104045,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 3570.0,
   "end_distance_m": 3590.0,
   "start_elevation_m": 1721.6280783118768,
   "end_elevation_m": 1724.5473668172976,
   "min_gradient_pct": -40.83868558191057,
   "suppressed_max_gradient_pct": 46.60725525208477,
   "suppressed_location_m": [
    599.0,
    619.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 14.63933228445967,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 3565.0,
   "end_distance_m": 3590.0,
   "start_elevation_m": 1720.8875337461827,
   "end_elevation_m": 1724.5473668172976,
   "min_gradient_pct": -32.03846897589756,
   "suppressed_max_gradient_pct": 37.974935740433466,
   "suppressed_location_m": [
    599.0,
    624.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 13.948831103249631,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 3548.0,
   "end_distance_m": 3598.0,
   "start_elevation_m": 1718.4998656246985,
   "end_elevation_m": 1725.4742811763233,
   "min_gradient_pct": -15.400695603228542,
   "suppressed_max_gradient_pct": 20.28210250669099,
   "suppressed_location_m": [
    599.0,
    649.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 12.15734265990909,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 3506.0,
   "end_distance_m": 3606.0,
   "start_elevation_m": 1714.1896001456491,
   "end_elevation_m": 1726.3469428055582,
   "min_gradient_pct": -7.819496762650942,
   "suppressed_max_gradient_pct": 12.330820994603528,
   "suppressed_location_m": [
    24.0,
    124.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.278,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 59.0,
  "shape_class": "sustained"
 },
 "length_m": 7262.615804690553,
 "start_elevation_m": 1494.7115662695214,
 "end_elevation_m": 2029.90713736085,
 "endpoint_gain_m": 535.1955710913285,
 "overall_gradient_pct": 7.369184677863215,
 "accumulated_ascent_m": 572.4695347597408,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.456860090208465,
   "start_distance_m": 3029.0,
   "end_distance_m": 3034.0,
   "midpoint_distance_m": 3031.5,
   "start_elevation_m": 1673.9113914978752,
   "end_elevation_m": 1675.1342345023857,
   "start_xy": [
    1040840.914515242,
    6345577.267826085
   ],
   "end_xy": [
    1040844.2574030729,
    6345580.986038148
   ]
  },
  "max_10m": {
   "gradient_pct": 17.604885651303448,
   "start_distance_m": 3024.0,
   "end_distance_m": 3034.0,
   "midpoint_distance_m": 3029.0,
   "start_elevation_m": 1673.3737459372553,
   "end_elevation_m": 1675.1342345023857,
   "start_xy": [
    1040837.5716274111,
    6345573.549614022
   ],
   "end_xy": [
    1040844.2574030729,
    6345580.986038148
   ]
  },
  "max_20m": {
   "gradient_pct": 14.596442527104045,
   "start_distance_m": 3570.0,
   "end_distance_m": 3590.0,
   "midpoint_distance_m": 3580.0,
   "start_elevation_m": 1721.6280783118768,
   "end_elevation_m": 1724.5473668172976,
   "start_xy": [
    1040731.8640579709,
    6345667.420956241
   ],
   "end_xy": [
    1040724.0365145332,
    6345649.016945858
   ]
  },
  "max_25m": {
   "gradient_pct": 14.63933228445967,
   "start_distance_m": 3565.0,
   "end_distance_m": 3590.0,
   "midpoint_distance_m": 3577.5,
   "start_elevation_m": 1720.8875337461827,
   "end_elevation_m": 1724.5473668172976,
   "start_xy": [
    1040733.808867382,
    6345672.027225486
   ],
   "end_xy": [
    1040724.0365145332,
    6345649.016945858
   ]
  },
  "max_50m": {
   "gradient_pct": 13.948831103249631,
   "start_distance_m": 3548.0,
   "end_distance_m": 3598.0,
   "midpoint_distance_m": 3573.0,
   "start_elevation_m": 1718.4998656246985,
   "end_elevation_m": 1725.4742811763233,
   "start_xy": [
    1040743.8147475339,
    6345685.514801347
   ],
   "end_xy": [
    1040720.6436939833,
    6345641.773680618
   ]
  },
  "max_100m": {
   "gradient_pct": 12.15734265990909,
   "start_distance_m": 3506.0,
   "end_distance_m": 3606.0,
   "midpoint_distance_m": 3556.0,
   "start_elevation_m": 1714.1896001456491,
   "end_elevation_m": 1726.3469428055582,
   "start_xy": [
    1040781.8638359163,
    6345701.948200069
   ],
   "end_xy": [
    1040716.955394803,
    6345634.678333568
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -176.349275034122,
   "start_distance_m": 594.0,
   "end_distance_m": 599.0,
   "midpoint_distance_m": 596.5,
   "start_elevation_m": 1523.5476327416181,
   "end_elevation_m": 1514.730168989912,
   "start_xy": [
    1042654.1691190108,
    6344484.859084039
   ],
   "end_xy": [
    1042649.63708709,
    6344486.923150017
   ]
  },
  "min_10m": {
   "gradient_pct": -85.13346784816122,
   "start_distance_m": 589.0,
   "end_distance_m": 599.0,
   "midpoint_distance_m": 594.0,
   "start_elevation_m": 1523.2435157747282,
   "end_elevation_m": 1514.730168989912,
   "start_xy": [
    1042658.2119831776,
    6344481.917103528
   ],
   "end_xy": [
    1042649.63708709,
    6344486.923150017
   ]
  },
  "min_20m": {
   "gradient_pct": -40.83868558191057,
   "start_distance_m": 579.0,
   "end_distance_m": 599.0,
   "midpoint_distance_m": 589.0,
   "start_elevation_m": 1522.8979061062942,
   "end_elevation_m": 1514.730168989912,
   "start_xy": [
    1042665.5664838842,
    6344475.195357266
   ],
   "end_xy": [
    1042649.63708709,
    6344486.923150017
   ]
  },
  "min_25m": {
   "gradient_pct": -32.03846897589756,
   "start_distance_m": 574.0,
   "end_distance_m": 599.0,
   "midpoint_distance_m": 586.5,
   "start_elevation_m": 1522.7397862338864,
   "end_elevation_m": 1514.730168989912,
   "start_xy": [
    1042669.0404584192,
    6344471.601251108
   ],
   "end_xy": [
    1042649.63708709,
    6344486.923150017
   ]
  },
  "min_50m": {
   "gradient_pct": -15.400695603228542,
   "start_distance_m": 549.0,
   "end_distance_m": 599.0,
   "midpoint_distance_m": 574.0,
   "start_elevation_m": 1522.4305167915263,
   "end_elevation_m": 1514.730168989912,
   "start_xy": [
    1042690.5644732567,
    6344459.345674402
   ],
   "end_xy": [
    1042649.63708709,
    6344486.923150017
   ]
  },
  "min_100m": {
   "gradient_pct": -7.819496762650942,
   "start_distance_m": 499.0,
   "end_distance_m": 599.0,
   "midpoint_distance_m": 549.0,
   "start_elevation_m": 1522.549665752563,
   "end_elevation_m": 1514.730168989912,
   "start_xy": [
    1042738.5183567826,
    6344445.254507658
   ],
   "end_xy": [
    1042649.63708709,
    6344486.923150017
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 37.213883556887595,
   "start_distance_m": 250.0,
   "end_distance_m": 252.0,
   "midpoint_distance_m": 251.0,
   "start_elevation_m": 1511.7491472349063,
   "end_elevation_m": 1512.493424906044,
   "start_xy": [
    1042967.2642900251,
    6344351.55073517
   ],
   "end_xy": [
    1042965.4624882025,
    6344352.418784819
   ]
  },
  "max_3m": {
   "gradient_pct": 29.60319365936357,
   "start_distance_m": 250.0,
   "end_distance_m": 253.0,
   "midpoint_distance_m": 251.5,
   "start_elevation_m": 1511.7491472349063,
   "end_elevation_m": 1512.6372430446872,
   "start_xy": [
    1042967.2642900251,
    6344351.55073517
   ],
   "end_xy": [
    1042964.5615872913,
    6344352.852809643
   ]
  }
 },
 "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": {
  "structure_suppression": {
   "masked_fraction": 0.009,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.013,
   "windows_resited": [
    10.0,
    20.0,
    25.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 3784.0,
     "end_m": 3809.0,
     "raw_pct": 15.38,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 3786.0,
     "end_m": 3806.0,
     "raw_pct": 16.49,
     "reason": "hump"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.147,
   "obstruction_max_height_m": 25.56,
   "flagged_windows_m": [
    5,
    10,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    11.0,
    35.0
   ],
   [
    592.0,
    609.0
   ],
   [
    1378.0,
    1393.0
   ],
   [
    2851.0,
    2859.0
   ],
   [
    3782.0,
    3811.0
   ]
  ],
  "review": [],
  "extent": [
   "descends_at_start"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "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_E1038-N6346_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1039-N6345_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1039-N6346_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1040-N6345_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1040-N6346_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1041-N6344_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1041-N6345_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1042-N6344_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1042-N6345_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1043-N6344_0m5.tif"
  ],
  "calculated_at": "2026-09-18T06:17:14+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-alps4-cols2.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-alps4-cols2",
  "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": [
   "E1038-N6346",
   "E1039-N6345",
   "E1039-N6346",
   "E1040-N6345",
   "E1040-N6346",
   "E1041-N6344",
   "E1041-N6345",
   "E1042-N6344",
   "E1042-N6345",
   "E1043-N6344"
  ],
  "elevation_blocks": [
   "21LHD8SP@2025-06-20"
  ],
  "ign_dalles": [
   "LHD_FXX_1038_6347_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_1039_6346_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_1039_6347_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_1040_6346_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_1040_6347_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_1041_6345_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_1041_6346_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_1042_6345_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_1042_6346_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_1043_6345_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD8SP"
  ],
  "ign_editions": [
   "2025-06-20"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1038_6347_MNT_O_0M50_LAMB93_IGN69": "2025-06-20",
   "LHD_FXX_1039_6346_MNT_O_0M50_LAMB93_IGN69": "2025-06-20",
   "LHD_FXX_1039_6347_MNT_O_0M50_LAMB93_IGN69": "2025-06-20",
   "LHD_FXX_1040_6346_MNT_O_0M50_LAMB93_IGN69": "2025-06-20",
   "LHD_FXX_1040_6347_MNT_O_0M50_LAMB93_IGN69": "2025-06-20",
   "LHD_FXX_1041_6345_MNT_O_0M50_LAMB93_IGN69": "2025-06-20",
   "LHD_FXX_1041_6346_MNT_O_0M50_LAMB93_IGN69": "2025-06-20",
   "LHD_FXX_1042_6345_MNT_O_0M50_LAMB93_IGN69": "2025-06-20",
   "LHD_FXX_1042_6346_MNT_O_0M50_LAMB93_IGN69": "2025-06-20",
   "LHD_FXX_1043_6345_MNT_O_0M50_LAMB93_IGN69": "2025-06-20"
  },
  "climb_origin": "named-pass",
  "access_overrides": [
   "motor_vehicle=private"
  ],
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "carriageway": {
   "stations": 296,
   "stations_resolved": 296,
   "width_median_m": 5.5,
   "width_p10_m": 3.5,
   "width_min_m": 0.5,
   "width_max_m": 12.0,
   "bounded_share": 0.389,
   "unbounded_share": 0.611,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.75,
   "window_m": [
    3565.0,
    3590.0
   ],
   "width_at_max25_m": 4.5,
   "window_stations": 6,
   "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": 296,
    "stations_resolved": 296,
    "width_median_m": 4.25,
    "width_p10_m": 1.0,
    "width_min_m": 0.0,
    "width_max_m": 12.0,
    "bounded_share": 0.916,
    "unbounded_share": 0.084,
    "confidence_median": 1.0,
    "width_median_bounded_m": 4.0,
    "window_m": [
     3565.0,
     3590.0
    ],
    "width_at_max25_m": 1.75,
    "window_stations": 6,
    "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": "Saint-Martin-V\u00e9subie",
  "county": "Alpes-Maritimes",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}