{
 "ocl_version": "0.1.0",
 "name": "Chemin du Campe",
 "slug": "chemin-du-campe",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 31.877295514800608,
   "diagnostic": true,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 287.0,
   "end_distance_m": 289.0,
   "start_elevation_m": 442.5846942827916,
   "end_elevation_m": 443.2222401930876,
   "min_gradient_pct": -3.9028818773999774,
   "suppressed_max_gradient_pct": 38.41753443582263,
   "suppressed_location_m": [
    123.0,
    125.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 26.442370931840742,
   "diagnostic": true,
   "flags": [
    "no_bench_excluded"
   ],
   "start_distance_m": 333.0,
   "end_distance_m": 336.0,
   "start_elevation_m": 448.1972657880996,
   "end_elevation_m": 448.99053691605485,
   "min_gradient_pct": -2.7297284256292187,
   "suppressed_max_gradient_pct": 36.38776437896922,
   "suppressed_location_m": [
    122.0,
    125.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.986191998343656,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 284.0,
   "end_distance_m": 289.0,
   "start_elevation_m": 441.9729305931704,
   "end_elevation_m": 443.2222401930876,
   "min_gradient_pct": -1.941244275678855,
   "suppressed_max_gradient_pct": 36.284142558713484,
   "suppressed_location_m": [
    119.0,
    124.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.75793342163729,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 269.0,
   "end_distance_m": 279.0,
   "start_elevation_m": 438.95144373478774,
   "end_elevation_m": 441.1272370769515,
   "min_gradient_pct": -0.7104196496152326,
   "suppressed_max_gradient_pct": 25.86793027455201,
   "suppressed_location_m": [
    103.0,
    113.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.35398229149928,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 269.0,
   "end_distance_m": 289.0,
   "start_elevation_m": 438.95144373478774,
   "end_elevation_m": 443.2222401930876,
   "min_gradient_pct": 1.075607828483669,
   "suppressed_max_gradient_pct": 23.306293081327567,
   "suppressed_location_m": [
    105.0,
    125.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.131665043860494,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 264.0,
   "end_distance_m": 289.0,
   "start_elevation_m": 437.9393239321225,
   "end_elevation_m": 443.2222401930876,
   "min_gradient_pct": 1.8370143142524284,
   "suppressed_max_gradient_pct": 21.638783367569204,
   "suppressed_location_m": [
    104.0,
    129.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.94022226077493,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 239.0,
   "end_distance_m": 289.0,
   "start_elevation_m": 434.25212906270013,
   "end_elevation_m": 443.2222401930876,
   "min_gradient_pct": 4.096093593764408,
   "suppressed_max_gradient_pct": 19.643650927565773,
   "suppressed_location_m": [
    104.0,
    154.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.152494246077708,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 239.0,
   "end_distance_m": 339.0,
   "start_elevation_m": 434.25212906270013,
   "end_elevation_m": 449.40462330877784,
   "min_gradient_pct": 7.854003833390891,
   "suppressed_max_gradient_pct": 16.918790339306497,
   "suppressed_location_m": [
    104.0,
    204.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.331,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 109.0,
  "shape_class": "sustained"
 },
 "length_m": 456.9573286276116,
 "start_elevation_m": 404.3254381433304,
 "end_elevation_m": 459.62233807616354,
 "endpoint_gain_m": 55.29689993283313,
 "overall_gradient_pct": 12.101108017877147,
 "accumulated_ascent_m": 55.6098921561138,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.986191998343656,
   "start_distance_m": 284.0,
   "end_distance_m": 289.0,
   "midpoint_distance_m": 286.5,
   "start_elevation_m": 441.9729305931704,
   "end_elevation_m": 443.2222401930876,
   "start_xy": [
    1046393.6803603224,
    6305296.951020444
   ],
   "end_xy": [
    1046390.9393453868,
    6305301.132747016
   ]
  },
  "max_10m": {
   "gradient_pct": 21.75793342163729,
   "start_distance_m": 269.0,
   "end_distance_m": 279.0,
   "midpoint_distance_m": 274.0,
   "start_elevation_m": 438.95144373478774,
   "end_elevation_m": 441.1272370769515,
   "start_xy": [
    1046401.903405129,
    6305284.4058407275
   ],
   "end_xy": [
    1046396.4213752579,
    6305292.769293872
   ]
  },
  "max_20m": {
   "gradient_pct": 21.35398229149928,
   "start_distance_m": 269.0,
   "end_distance_m": 289.0,
   "midpoint_distance_m": 279.0,
   "start_elevation_m": 438.95144373478774,
   "end_elevation_m": 443.2222401930876,
   "start_xy": [
    1046401.903405129,
    6305284.4058407275
   ],
   "end_xy": [
    1046390.9393453868,
    6305301.132747016
   ]
  },
  "max_25m": {
   "gradient_pct": 21.131665043860494,
   "start_distance_m": 264.0,
   "end_distance_m": 289.0,
   "midpoint_distance_m": 276.5,
   "start_elevation_m": 437.9393239321225,
   "end_elevation_m": 443.2222401930876,
   "start_xy": [
    1046404.6444200645,
    6305280.224114155
   ],
   "end_xy": [
    1046390.9393453868,
    6305301.132747016
   ]
  },
  "max_50m": {
   "gradient_pct": 17.94022226077493,
   "start_distance_m": 239.0,
   "end_distance_m": 289.0,
   "midpoint_distance_m": 264.0,
   "start_elevation_m": 434.25212906270013,
   "end_elevation_m": 443.2222401930876,
   "start_xy": [
    1046423.5174632526,
    6305264.186701354
   ],
   "end_xy": [
    1046390.9393453868,
    6305301.132747016
   ]
  },
  "max_100m": {
   "gradient_pct": 15.152494246077708,
   "start_distance_m": 239.0,
   "end_distance_m": 339.0,
   "midpoint_distance_m": 289.0,
   "start_elevation_m": 434.25212906270013,
   "end_elevation_m": 449.40462330877784,
   "start_xy": [
    1046423.5174632526,
    6305264.186701354
   ],
   "end_xy": [
    1046354.0065938975,
    6305334.157202051
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -1.941244275678855,
   "start_distance_m": 412.0,
   "end_distance_m": 417.0,
   "midpoint_distance_m": 414.5,
   "start_elevation_m": 458.1671292703073,
   "end_elevation_m": 458.0700670565234,
   "start_xy": [
    1046310.5301006476,
    6305392.091420866
   ],
   "end_xy": [
    1046309.9691580861,
    6305397.059855574
   ]
  },
  "min_10m": {
   "gradient_pct": -0.7104196496152326,
   "start_distance_m": 412.0,
   "end_distance_m": 422.0,
   "midpoint_distance_m": 417.0,
   "start_elevation_m": 458.1671292703073,
   "end_elevation_m": 458.0960873053458,
   "start_xy": [
    1046310.5301006476,
    6305392.091420866
   ],
   "end_xy": [
    1046309.4082155246,
    6305402.028290281
   ]
  },
  "min_20m": {
   "gradient_pct": 1.075607828483669,
   "start_distance_m": 411.0,
   "end_distance_m": 431.0,
   "midpoint_distance_m": 421.0,
   "start_elevation_m": 458.14044015630685,
   "end_elevation_m": 458.3555617220036,
   "start_xy": [
    1046310.6422891598,
    6305391.097733924
   ],
   "end_xy": [
    1046309.079354779,
    6305410.989821335
   ]
  },
  "min_25m": {
   "gradient_pct": 1.8370143142524284,
   "start_distance_m": 412.0,
   "end_distance_m": 437.0,
   "midpoint_distance_m": 424.5,
   "start_elevation_m": 458.1671292703073,
   "end_elevation_m": 458.62638284887043,
   "start_xy": [
    1046310.5301006476,
    6305392.091420866
   ],
   "end_xy": [
    1046309.8494011419,
    6305416.921889012
   ]
  },
  "min_50m": {
   "gradient_pct": 4.096093593764408,
   "start_distance_m": 406.0,
   "end_distance_m": 456.0,
   "midpoint_distance_m": 431.0,
   "start_elevation_m": 457.4622624117944,
   "end_elevation_m": 459.51030920867663,
   "start_xy": [
    1046312.2898897432,
    6305386.393092016
   ],
   "end_xy": [
    1046313.9018161626,
    6305435.48469948
   ]
  },
  "min_100m": {
   "gradient_pct": 7.854003833390891,
   "start_distance_m": 355.0,
   "end_distance_m": 455.0,
   "midpoint_distance_m": 405.0,
   "start_elevation_m": 451.5147415585319,
   "end_elevation_m": 459.3687453919228,
   "start_xy": [
    1046344.1644900736,
    6305346.768296177
   ],
   "end_xy": [
    1046313.6885311615,
    6305434.507709456
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 31.877295514800608,
   "start_distance_m": 287.0,
   "end_distance_m": 289.0,
   "midpoint_distance_m": 288.0,
   "start_elevation_m": 442.5846942827916,
   "end_elevation_m": 443.2222401930876,
   "start_xy": [
    1046392.035751361,
    6305299.460056387
   ],
   "end_xy": [
    1046390.9393453868,
    6305301.132747016
   ]
  },
  "max_3m": {
   "gradient_pct": 26.442370931840742,
   "start_distance_m": 333.0,
   "end_distance_m": 336.0,
   "midpoint_distance_m": 334.5,
   "start_elevation_m": 448.1972657880996,
   "end_elevation_m": 448.99053691605485,
   "start_xy": [
    1046357.812731018,
    6305329.51895667
   ],
   "end_xy": [
    1046355.9096624578,
    6305331.83807936
   ]
  }
 },
 "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": {
  "no_bench_suppression": {
   "masked_fraction": 0.068,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.255,
   "obstruction_max_height_m": 19.3,
   "flagged_windows_m": [
    2,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    100.0,
    130.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "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_E1046-N6305_0m5.tif"
  ],
  "calculated_at": "2026-09-17T02:50:50+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-alps4.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-alps4",
  "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": [
   "E1046-N6305"
  ],
  "elevation_blocks": [
   "21LHD8SP@2025-06-20"
  ],
  "ign_dalles": [
   "LHD_FXX_1046_6306_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD8SP"
  ],
  "ign_editions": [
   "2025-06-20"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1046_6306_MNT_O_0M50_LAMB93_IGN69": "2025-06-20"
  },
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "carriageway": {
   "stations": 25,
   "stations_resolved": 25,
   "width_median_m": 3.75,
   "width_p10_m": 2.35,
   "width_min_m": 1.5,
   "width_max_m": 12.0,
   "bounded_share": 0.44,
   "unbounded_share": 0.56,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.0,
   "window_m": [
    264.0,
    289.0
   ],
   "width_at_max25_m": 3.25,
   "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": 25,
    "stations_resolved": 25,
    "width_median_m": 2.25,
    "width_p10_m": 0.6,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.92,
    "unbounded_share": 0.08,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.25,
    "window_m": [
     264.0,
     289.0
    ],
    "width_at_max25_m": 2.25,
    "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": "Cantaron",
  "county": "Alpes-Maritimes",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}