{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (44.9333, 2.6972)",
 "slug": "discovered-lane-44-9333-2-6972",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 36.380452191752966,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 52.0,
   "end_distance_m": 54.0,
   "start_elevation_m": 905.152005521154,
   "end_elevation_m": 905.8796145649891,
   "min_gradient_pct": -21.252980103503205
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 34.83621477344059,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 199.0,
   "end_distance_m": 202.0,
   "start_elevation_m": 927.4151881555201,
   "end_elevation_m": 928.4602745987233,
   "min_gradient_pct": -18.83485500131125
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 32.13617213709995,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 199.0,
   "end_distance_m": 204.0,
   "start_elevation_m": 927.4151881555201,
   "end_elevation_m": 929.0219967623751,
   "min_gradient_pct": -17.603740328031563
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 26.19380590560695,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 194.0,
   "end_distance_m": 204.0,
   "start_elevation_m": 926.4026161718144,
   "end_elevation_m": 929.0219967623751,
   "min_gradient_pct": -15.399203396964367
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.06307749883024,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 184.0,
   "end_distance_m": 204.0,
   "start_elevation_m": 924.6093812626091,
   "end_elevation_m": 929.0219967623751,
   "min_gradient_pct": -12.03398575982817
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.113750985830393,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 179.0,
   "end_distance_m": 204.0,
   "start_elevation_m": 923.7435590159175,
   "end_elevation_m": 929.0219967623751,
   "min_gradient_pct": -10.33770414010678
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.31048389843386,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 230.0,
   "end_distance_m": 280.0,
   "start_elevation_m": 932.4717834604046,
   "end_elevation_m": 942.1270254096215,
   "min_gradient_pct": -3.9890429038937327
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.20433686577917,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 179.0,
   "end_distance_m": 279.0,
   "start_elevation_m": 923.7435590159175,
   "end_elevation_m": 941.9478958816967,
   "min_gradient_pct": 2.193081367093896
  }
 ],
 "shape": {
  "ascent_concentration": 0.348,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 251.0,
  "shape_class": "sustained"
 },
 "length_m": 885.9785887573212,
 "start_elevation_m": 901.2415278808415,
 "end_elevation_m": 1001.6598093623226,
 "endpoint_gain_m": 100.41828148148102,
 "overall_gradient_pct": 11.334165718646576,
 "accumulated_ascent_m": 104.18726534044652,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 32.13617213709995,
   "start_distance_m": 199.0,
   "end_distance_m": 204.0,
   "midpoint_distance_m": 201.5,
   "start_elevation_m": 927.4151881555201,
   "end_elevation_m": 929.0219967623751,
   "start_xy": [
    676029.1491149006,
    6425862.441852009
   ],
   "end_xy": [
    676033.0451931709,
    6425865.575631534
   ]
  },
  "max_10m": {
   "gradient_pct": 26.19380590560695,
   "start_distance_m": 194.0,
   "end_distance_m": 204.0,
   "midpoint_distance_m": 199.0,
   "start_elevation_m": 926.4026161718144,
   "end_elevation_m": 929.0219967623751,
   "start_xy": [
    676025.2530366303,
    6425859.308072484
   ],
   "end_xy": [
    676033.0451931709,
    6425865.575631534
   ]
  },
  "max_20m": {
   "gradient_pct": 22.06307749883024,
   "start_distance_m": 184.0,
   "end_distance_m": 204.0,
   "midpoint_distance_m": 194.0,
   "start_elevation_m": 924.6093812626091,
   "end_elevation_m": 929.0219967623751,
   "start_xy": [
    676016.5848119697,
    6425854.66405738
   ],
   "end_xy": [
    676033.0451931709,
    6425865.575631534
   ]
  },
  "max_25m": {
   "gradient_pct": 21.113750985830393,
   "start_distance_m": 179.0,
   "end_distance_m": 204.0,
   "midpoint_distance_m": 191.5,
   "start_elevation_m": 923.7435590159175,
   "end_elevation_m": 929.0219967623751,
   "start_xy": [
    676011.8266153388,
    6425853.127969875
   ],
   "end_xy": [
    676033.0451931709,
    6425865.575631534
   ]
  },
  "max_50m": {
   "gradient_pct": 19.31048389843386,
   "start_distance_m": 230.0,
   "end_distance_m": 280.0,
   "midpoint_distance_m": 255.0,
   "start_elevation_m": 932.4717834604046,
   "end_elevation_m": 942.1270254096215,
   "start_xy": [
    676048.4425711922,
    6425885.481011211
   ],
   "end_xy": [
    676063.0630275826,
    6425933.266288486
   ]
  },
  "max_100m": {
   "gradient_pct": 18.20433686577917,
   "start_distance_m": 179.0,
   "end_distance_m": 279.0,
   "midpoint_distance_m": 229.0,
   "start_elevation_m": 923.7435590159175,
   "end_elevation_m": 941.9478958816967,
   "start_xy": [
    676011.8266153388,
    6425853.127969875
   ],
   "end_xy": [
    676062.7466974389,
    6425932.31763932
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -17.603740328031563,
   "start_distance_m": 880.0,
   "end_distance_m": 885.0,
   "midpoint_distance_m": 882.5,
   "start_elevation_m": 1002.7043170980008,
   "end_elevation_m": 1001.8241300815993,
   "start_xy": [
    676389.2512519726,
    6426307.0070804125
   ],
   "end_xy": [
    676394.2120782379,
    6426307.631742534
   ]
  },
  "min_10m": {
   "gradient_pct": -15.399203396964367,
   "start_distance_m": 875.0,
   "end_distance_m": 885.0,
   "midpoint_distance_m": 880.0,
   "start_elevation_m": 1003.3640504212957,
   "end_elevation_m": 1001.8241300815993,
   "start_xy": [
    676384.2904257074,
    6426306.382418292
   ],
   "end_xy": [
    676394.2120782379,
    6426307.631742534
   ]
  },
  "min_20m": {
   "gradient_pct": -12.03398575982817,
   "start_distance_m": 865.0,
   "end_distance_m": 885.0,
   "midpoint_distance_m": 875.0,
   "start_elevation_m": 1004.2309272335649,
   "end_elevation_m": 1001.8241300815993,
   "start_xy": [
    676374.3687731768,
    6426305.133094049
   ],
   "end_xy": [
    676394.2120782379,
    6426307.631742534
   ]
  },
  "min_25m": {
   "gradient_pct": -10.33770414010678,
   "start_distance_m": 860.0,
   "end_distance_m": 885.0,
   "midpoint_distance_m": 872.5,
   "start_elevation_m": 1004.408556116626,
   "end_elevation_m": 1001.8241300815993,
   "start_xy": [
    676369.5025491841,
    6426305.182616947
   ],
   "end_xy": [
    676394.2120782379,
    6426307.631742534
   ]
  },
  "min_50m": {
   "gradient_pct": -3.9890429038937327,
   "start_distance_m": 835.0,
   "end_distance_m": 885.0,
   "midpoint_distance_m": 860.0,
   "start_elevation_m": 1003.8186515335461,
   "end_elevation_m": 1001.8241300815993,
   "start_xy": [
    676346.5159474522,
    6426315.011967934
   ],
   "end_xy": [
    676394.2120782379,
    6426307.631742534
   ]
  },
  "min_100m": {
   "gradient_pct": 2.193081367093896,
   "start_distance_m": 785.0,
   "end_distance_m": 885.0,
   "midpoint_distance_m": 835.0,
   "start_elevation_m": 999.6310487145054,
   "end_elevation_m": 1001.8241300815993,
   "start_xy": [
    676308.1688233803,
    6426344.554519374
   ],
   "end_xy": [
    676394.2120782379,
    6426307.631742534
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 36.380452191752966,
   "start_distance_m": 52.0,
   "end_distance_m": 54.0,
   "midpoint_distance_m": 53.0,
   "start_elevation_m": 905.152005521154,
   "end_elevation_m": 905.8796145649891,
   "start_xy": [
    675899.28650939,
    6425796.020169113
   ],
   "end_xy": [
    675900.9051507171,
    6425797.194903234
   ]
  },
  "max_3m": {
   "gradient_pct": 34.83621477344059,
   "start_distance_m": 199.0,
   "end_distance_m": 202.0,
   "midpoint_distance_m": 200.5,
   "start_elevation_m": 927.4151881555201,
   "end_elevation_m": 928.4602745987233,
   "start_xy": [
    676029.1491149006,
    6425862.441852009
   ],
   "end_xy": [
    676031.4867618628,
    6425864.322119724
   ]
  }
 },
 "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": 0.024,
   "windows_resited": [],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.632,
   "obstruction_max_height_m": 24.79,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    0.0,
    20.0
   ]
  ],
  "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-mc4",
   "road_pbf": "block-batch-fr-mc4.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_E675-N6425_0m5@22LHD3KN-2025-01-29.tif",
   "data/cache/fr/ign-lidarhd_dtm_E675-N6426_0m5@22LHD3KN-2025-01-29.tif",
   "data/cache/fr/ign-lidarhd_dtm_E676-N6425_0m5@22LHD3KN-2025-01-29.tif",
   "data/cache/fr/ign-lidarhd_dtm_E676-N6426_0m5@22LHD3KN-2025-01-29.tif"
  ],
  "calculated_at": "2026-09-22T17:55:00+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc4.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc4",
  "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": [
   "E675-N6425",
   "E675-N6426",
   "E676-N6425",
   "E676-N6426"
  ],
  "elevation_blocks": [
   "22LHD3KN@2025-01-29"
  ],
  "ign_dalles": [
   "LHD_FXX_0675_6426_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0675_6427_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0676_6426_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0676_6427_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD3KN"
  ],
  "ign_editions": [
   "2025-01-29"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0675_6426_MNT_O_0M50_LAMB93_IGN69": "2025-01-29",
   "LHD_FXX_0675_6427_MNT_O_0M50_LAMB93_IGN69": "2025-01-29",
   "LHD_FXX_0676_6426_MNT_O_0M50_LAMB93_IGN69": "2025-01-29",
   "LHD_FXX_0676_6427_MNT_O_0M50_LAMB93_IGN69": "2025-01-29"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "structure_mask_ranges_m": [
   [
    0.0,
    15.0
   ]
  ],
  "carriageway": {
   "stations": 42,
   "stations_resolved": 42,
   "width_median_m": 3.88,
   "width_p10_m": 2.28,
   "width_min_m": 1.5,
   "width_max_m": 12.0,
   "bounded_share": 0.357,
   "unbounded_share": 0.643,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.75,
   "window_m": [
    179.0,
    204.0
   ],
   "width_at_max25_m": 3.0,
   "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": 42,
    "stations_resolved": 42,
    "width_median_m": 2.62,
    "width_p10_m": 0.53,
    "width_min_m": 0.5,
    "width_max_m": 9.5,
    "bounded_share": 0.905,
    "unbounded_share": 0.095,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.25,
    "window_m": [
     179.0,
     204.0
    ],
    "width_at_max25_m": 3.5,
    "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": "Pailherols",
  "county": "Cantal",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}