{
 "ocl_version": "0.1.0",
 "name": "Col de la Loubi\u00e8re from Lanu\u00e9jols",
 "slug": "col-de-la-loubiere-from-lanuejols",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 43.24619988971108,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 2465.0,
   "end_distance_m": 2467.0,
   "start_elevation_m": 941.8086767711907,
   "end_elevation_m": 942.6736007689849,
   "min_gradient_pct": -29.92585508624188,
   "suppressed_max_gradient_pct": 69.92006241036961,
   "suppressed_location_m": [
    932.0,
    934.0
   ],
   "suppressed_min_gradient_pct": -46.45324638607917,
   "suppressed_min_location_m": [
    938.0,
    940.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 31.85313425389798,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 2464.0,
   "end_distance_m": 2467.0,
   "start_elevation_m": 941.718006741368,
   "end_elevation_m": 942.6736007689849,
   "min_gradient_pct": -21.54543585013471,
   "suppressed_max_gradient_pct": 43.90809125623415,
   "suppressed_location_m": [
    932.0,
    935.0
   ],
   "suppressed_min_gradient_pct": -36.34228281476529,
   "suppressed_min_location_m": [
    938.0,
    941.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.827380605588132,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "suppression_unstable",
    "canopy_or_structure"
   ],
   "start_distance_m": 2462.0,
   "end_distance_m": 2467.0,
   "start_elevation_m": 941.5322317387055,
   "end_elevation_m": 942.6736007689849,
   "min_gradient_pct": -15.383866737181506,
   "suppressed_max_gradient_pct": 35.33415712616261,
   "suppressed_location_m": [
    929.0,
    934.0
   ],
   "suppressed_min_gradient_pct": -18.44386832877717,
   "suppressed_min_location_m": [
    938.0,
    943.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 17.535393861597868,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 2464.0,
   "end_distance_m": 2474.0,
   "start_elevation_m": 941.718006741368,
   "end_elevation_m": 943.4715461275277,
   "min_gradient_pct": -8.582825554722149,
   "suppressed_max_gradient_pct": 18.281651729392934,
   "suppressed_location_m": [
    924.0,
    934.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 13.86975967625574,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 2454.0,
   "end_distance_m": 2474.0,
   "start_elevation_m": 940.6975941922766,
   "end_elevation_m": 943.4715461275277,
   "min_gradient_pct": -5.235223117575742
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 12.475439835410725,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 2449.0,
   "end_distance_m": 2474.0,
   "start_elevation_m": 940.3526861686751,
   "end_elevation_m": 943.4715461275277,
   "min_gradient_pct": -4.375078725446201
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 9.338906172738234,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 2424.0,
   "end_distance_m": 2474.0,
   "start_elevation_m": 938.8020930411586,
   "end_elevation_m": 943.4715461275277,
   "min_gradient_pct": -1.0631976492434205
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 8.200901098240251,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 2374.0,
   "end_distance_m": 2474.0,
   "start_elevation_m": 935.2706450292875,
   "end_elevation_m": 943.4715461275277,
   "min_gradient_pct": -0.8853420627629021
  }
 ],
 "shape": {
  "ascent_concentration": 0.292,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 24.0,
  "shape_class": "sustained"
 },
 "length_m": 6565.651963406083,
 "start_elevation_m": 839.620862077646,
 "end_elevation_m": 1182.4878390820334,
 "endpoint_gain_m": 342.8669770043873,
 "overall_gradient_pct": 5.222131464100896,
 "accumulated_ascent_m": 360.5178870623762,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.827380605588132,
   "start_distance_m": 2462.0,
   "end_distance_m": 2467.0,
   "midpoint_distance_m": 2464.5,
   "start_elevation_m": 941.5322317387055,
   "end_elevation_m": 942.6736007689849,
   "start_xy": [
    748153.5303677729,
    6377977.492142264
   ],
   "end_xy": [
    748158.4467224996,
    6377976.581397403
   ]
  },
  "max_10m": {
   "gradient_pct": 17.535393861597868,
   "start_distance_m": 2464.0,
   "end_distance_m": 2474.0,
   "midpoint_distance_m": 2469.0,
   "start_elevation_m": 941.718006741368,
   "end_elevation_m": 943.4715461275277,
   "start_xy": [
    748155.4969096635,
    6377977.12784432
   ],
   "end_xy": [
    748165.3296191168,
    6377975.306354597
   ]
  },
  "max_20m": {
   "gradient_pct": 13.86975967625574,
   "start_distance_m": 2454.0,
   "end_distance_m": 2474.0,
   "midpoint_distance_m": 2464.0,
   "start_elevation_m": 940.6975941922766,
   "end_elevation_m": 943.4715461275277,
   "start_xy": [
    748145.6642002102,
    6377978.949334041
   ],
   "end_xy": [
    748165.3296191168,
    6377975.306354597
   ]
  },
  "max_25m": {
   "gradient_pct": 12.475439835410725,
   "start_distance_m": 2449.0,
   "end_distance_m": 2474.0,
   "midpoint_distance_m": 2461.5,
   "start_elevation_m": 940.3526861686751,
   "end_elevation_m": 943.4715461275277,
   "start_xy": [
    748140.7478454835,
    6377979.860078902
   ],
   "end_xy": [
    748165.3296191168,
    6377975.306354597
   ]
  },
  "max_50m": {
   "gradient_pct": 9.338906172738234,
   "start_distance_m": 2424.0,
   "end_distance_m": 2474.0,
   "midpoint_distance_m": 2449.0,
   "start_elevation_m": 938.8020930411586,
   "end_elevation_m": 943.4715461275277,
   "start_xy": [
    748116.0527544031,
    6377983.42773605
   ],
   "end_xy": [
    748165.3296191168,
    6377975.306354597
   ]
  },
  "max_100m": {
   "gradient_pct": 8.200901098240251,
   "start_distance_m": 2374.0,
   "end_distance_m": 2474.0,
   "midpoint_distance_m": 2424.0,
   "start_elevation_m": 935.2706450292875,
   "end_elevation_m": 943.4715461275277,
   "start_xy": [
    748066.1048703747,
    6377985.710033375
   ],
   "end_xy": [
    748165.3296191168,
    6377975.306354597
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -15.383866737181506,
   "start_distance_m": 915.0,
   "end_distance_m": 920.0,
   "midpoint_distance_m": 917.5,
   "start_elevation_m": 860.6755766923135,
   "end_elevation_m": 859.9063833554544,
   "start_xy": [
    746619.7182694927,
    6377969.540898244
   ],
   "end_xy": [
    746624.7149660713,
    6377969.359175097
   ]
  },
  "min_10m": {
   "gradient_pct": -8.582825554722149,
   "start_distance_m": 898.0,
   "end_distance_m": 908.0,
   "midpoint_distance_m": 903.0,
   "start_elevation_m": 861.0794721155728,
   "end_elevation_m": 860.2211895601006,
   "start_xy": [
    746602.7295011258,
    6377970.158756944
   ],
   "end_xy": [
    746612.7228942829,
    6377969.79531065
   ]
  },
  "min_20m": {
   "gradient_pct": -5.235223117575742,
   "start_distance_m": 900.0,
   "end_distance_m": 920.0,
   "midpoint_distance_m": 910.0,
   "start_elevation_m": 860.9534279789696,
   "end_elevation_m": 859.9063833554544,
   "start_xy": [
    746604.7281797573,
    6377970.086067685
   ],
   "end_xy": [
    746624.7149660713,
    6377969.359175097
   ]
  },
  "min_25m": {
   "gradient_pct": -4.375078725446201,
   "start_distance_m": 895.0,
   "end_distance_m": 920.0,
   "midpoint_distance_m": 907.5,
   "start_elevation_m": 861.000153036816,
   "end_elevation_m": 859.9063833554544,
   "start_xy": [
    746599.7314831787,
    6377970.267790833
   ],
   "end_xy": [
    746624.7149660713,
    6377969.359175097
   ]
  },
  "min_50m": {
   "gradient_pct": -1.0631976492434205,
   "start_distance_m": 43.0,
   "end_distance_m": 93.0,
   "midpoint_distance_m": 68.0,
   "start_elevation_m": 839.3604159432515,
   "end_elevation_m": 838.8288171186298,
   "start_xy": [
    745778.823598127,
    6378074.954598347
   ],
   "end_xy": [
    745828.3721217267,
    6378068.256007022
   ]
  },
  "min_100m": {
   "gradient_pct": -0.8853420627629021,
   "start_distance_m": 27.0,
   "end_distance_m": 127.0,
   "midpoint_distance_m": 77.0,
   "start_elevation_m": 839.5107986655953,
   "end_elevation_m": 838.6254566028324,
   "start_xy": [
    745762.9718914684,
    6378077.127935874
   ],
   "end_xy": [
    745862.1321185884,
    6378064.223314138
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 43.24619988971108,
   "start_distance_m": 2465.0,
   "end_distance_m": 2467.0,
   "midpoint_distance_m": 2466.0,
   "start_elevation_m": 941.8086767711907,
   "end_elevation_m": 942.6736007689849,
   "start_xy": [
    748156.4801806089,
    6377976.945695347
   ],
   "end_xy": [
    748158.4467224996,
    6377976.581397403
   ]
  },
  "max_3m": {
   "gradient_pct": 31.85313425389798,
   "start_distance_m": 2464.0,
   "end_distance_m": 2467.0,
   "midpoint_distance_m": 2465.5,
   "start_elevation_m": 941.718006741368,
   "end_elevation_m": 942.6736007689849,
   "start_xy": [
    748155.4969096635,
    6377977.12784432
   ],
   "end_xy": [
    748158.4467224996,
    6377976.581397403
   ]
  }
 },
 "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": 0.004,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    2.0,
    3.0,
    5.0
   ],
   "minima_unresolved": []
  },
  "texture_windows": {
   "rounds": 0,
   "windows_masked": [],
   "advisory": [],
   "unresolved": [],
   "unstable": [
    {
     "window_m": 5.0,
     "start_m": 2462.0,
     "end_m": 2467.0,
     "raw_pct": 22.83,
     "reason": "short-step",
     "perturbations": [
      "phase+0.000/mask+0",
      "phase+0.333/mask+1",
      "phase+0.667/mask-1"
     ],
     "perturbation_reasons": [
      "short-step",
      "",
      ""
     ]
    }
   ]
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.301,
   "obstruction_max_height_m": 28.85,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    929.0,
    941.0
   ],
   [
    955.0,
    960.0
   ],
   [
    4630.0,
    4635.0
   ]
  ],
  "review": [],
  "extent": [
   "descends_at_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "1cc9fdcd6556a02163cb21acb2293cad3067d2a1",
   "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-mc5",
   "road_pbf": "block-batch-fr-mc5.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:af4eae1f5df9e232"
  },
  "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_E745-N6377_0m5@21LHD4MO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E745-N6378_0m5@21LHD4MO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E746-N6377_0m5@21LHD4MO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E746-N6378_0m5@21LHD4MO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E747-N6377_0m5@21LHD4MO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E747-N6378_0m5@21LHD4MO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E748-N6377_0m5@21LHD4MO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E748-N6378_0m5@21LHD4MO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E749-N6377_0m5@21LHD4MO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E749-N6378_0m5@21LHD4MO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E750-N6377_0m5@21LHD4MO-2024-12-13.tif"
  ],
  "calculated_at": "2026-09-22T17:03:57+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc5.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc5",
  "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": [
   "E745-N6377",
   "E745-N6378",
   "E746-N6377",
   "E746-N6378",
   "E747-N6377",
   "E747-N6378",
   "E748-N6377",
   "E748-N6378",
   "E749-N6377",
   "E749-N6378",
   "E750-N6377"
  ],
  "elevation_blocks": [
   "21LHD4MO@2024-12-13"
  ],
  "ign_dalles": [
   "LHD_FXX_0745_6378_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0745_6379_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0746_6378_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0746_6379_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0747_6378_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0747_6379_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0748_6378_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0748_6379_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0749_6378_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0749_6379_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0750_6378_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD4MO"
  ],
  "ign_editions": [
   "2024-12-13"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0745_6378_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0745_6379_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0746_6378_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0746_6379_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0747_6378_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0747_6379_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0748_6378_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0748_6379_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0749_6378_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0749_6379_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0750_6378_MNT_O_0M50_LAMB93_IGN69": "2024-12-13"
  },
  "climb_origin": "named-pass",
  "structure_own_ways": 6,
  "suppression_unstable": [
   5.0
  ],
  "carriageway": {
   "stations": 269,
   "stations_resolved": 269,
   "width_median_m": 4.75,
   "width_p10_m": 2.95,
   "width_min_m": 0.5,
   "width_max_m": 10.75,
   "bounded_share": 0.413,
   "unbounded_share": 0.587,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.5,
   "window_m": [
    2449.0,
    2474.0
   ],
   "width_at_max25_m": 2.75,
   "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": 269,
    "stations_resolved": 269,
    "width_median_m": 3.5,
    "width_p10_m": 0.5,
    "width_min_m": 0.0,
    "width_max_m": 12.0,
    "bounded_share": 0.948,
    "unbounded_share": 0.052,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.25,
    "window_m": [
     2449.0,
     2474.0
    ],
    "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": "Lanu\u00e9jols",
  "county": "Loz\u00e8re",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}