{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (43.5042, 6.3206)",
 "slug": "discovered-lane-43-5042-6-3206",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 41.51430751981877,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 245.0,
   "end_distance_m": 247.0,
   "start_elevation_m": 268.15772509389404,
   "end_elevation_m": 268.9880112442904,
   "min_gradient_pct": -14.30412189820629
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 37.53142485222535,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 237.0,
   "end_distance_m": 240.0,
   "start_elevation_m": 266.05779733298067,
   "end_elevation_m": 267.18374007854743,
   "min_gradient_pct": -10.80502948188761
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 32.72767124344,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 235.0,
   "end_distance_m": 240.0,
   "start_elevation_m": 265.54735651637543,
   "end_elevation_m": 267.18374007854743,
   "min_gradient_pct": -7.576638655223178
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 29.302139113097496,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 237.0,
   "end_distance_m": 247.0,
   "start_elevation_m": 266.05779733298067,
   "end_elevation_m": 268.9880112442904,
   "min_gradient_pct": -5.735301064925693
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 26.3418354347084,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 233.0,
   "end_distance_m": 253.0,
   "start_elevation_m": 264.93810255256005,
   "end_elevation_m": 270.20646963950173,
   "min_gradient_pct": -4.670960656125658
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 25.67724423886648,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 233.0,
   "end_distance_m": 258.0,
   "start_elevation_m": 264.93810255256005,
   "end_elevation_m": 271.3574136122767,
   "min_gradient_pct": -3.9479875628214813
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.865872913993485,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 232.0,
   "end_distance_m": 282.0,
   "start_elevation_m": 264.7894088533638,
   "end_elevation_m": 275.72234531036054,
   "min_gradient_pct": -2.298591311553082
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.20750703503859,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 183.0,
   "end_distance_m": 283.0,
   "start_elevation_m": 256.5393193972277,
   "end_elevation_m": 275.7468264322663,
   "min_gradient_pct": -0.859135830852324
  }
 ],
 "shape": {
  "ascent_concentration": 0.505,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 133.0,
  "shape_class": "stepped"
 },
 "length_m": 391.98192798919763,
 "start_elevation_m": 252.46842015075282,
 "end_elevation_m": 287.6478099811996,
 "endpoint_gain_m": 35.17938983044678,
 "overall_gradient_pct": 8.97474789486118,
 "accumulated_ascent_m": 37.719689647940015,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 32.72767124344,
   "start_distance_m": 235.0,
   "end_distance_m": 240.0,
   "midpoint_distance_m": 237.5,
   "start_elevation_m": 265.54735651637543,
   "end_elevation_m": 267.18374007854743,
   "start_xy": [
    968583.9569192451,
    6272996.955613667
   ],
   "end_xy": [
    968585.1390730265,
    6273001.813855369
   ]
  },
  "max_10m": {
   "gradient_pct": 29.302139113097496,
   "start_distance_m": 237.0,
   "end_distance_m": 247.0,
   "midpoint_distance_m": 242.0,
   "start_elevation_m": 266.05779733298067,
   "end_elevation_m": 268.9880112442904,
   "start_xy": [
    968584.4297807576,
    6272998.898910347
   ],
   "end_xy": [
    968586.7940883203,
    6273008.615393752
   ]
  },
  "max_20m": {
   "gradient_pct": 26.3418354347084,
   "start_distance_m": 233.0,
   "end_distance_m": 253.0,
   "midpoint_distance_m": 243.0,
   "start_elevation_m": 264.93810255256005,
   "end_elevation_m": 270.20646963950173,
   "start_xy": [
    968583.4840577326,
    6272995.012316986
   ],
   "end_xy": [
    968588.212672858,
    6273014.445283795
   ]
  },
  "max_25m": {
   "gradient_pct": 25.67724423886648,
   "start_distance_m": 233.0,
   "end_distance_m": 258.0,
   "midpoint_distance_m": 245.5,
   "start_elevation_m": 264.93810255256005,
   "end_elevation_m": 271.3574136122767,
   "start_xy": [
    968583.4840577326,
    6272995.012316986
   ],
   "end_xy": [
    968589.3881573012,
    6273019.305128862
   ]
  },
  "max_50m": {
   "gradient_pct": 21.865872913993485,
   "start_distance_m": 232.0,
   "end_distance_m": 282.0,
   "midpoint_distance_m": 257.0,
   "start_elevation_m": 264.7894088533638,
   "end_elevation_m": 275.72234531036054,
   "start_xy": [
    968583.2476269763,
    6272994.040668646
   ],
   "end_xy": [
    968594.9336981442,
    6273042.655652983
   ]
  },
  "max_100m": {
   "gradient_pct": 19.20750703503859,
   "start_distance_m": 183.0,
   "end_distance_m": 283.0,
   "midpoint_distance_m": 233.0,
   "start_elevation_m": 256.5393193972277,
   "end_elevation_m": 275.7468264322663,
   "start_xy": [
    968577.1344416501,
    6272945.554960389
   ],
   "end_xy": [
    968595.164762346,
    6273043.628591489
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -7.576638655223178,
   "start_distance_m": 167.0,
   "end_distance_m": 172.0,
   "midpoint_distance_m": 169.5,
   "start_elevation_m": 256.8678146597256,
   "end_elevation_m": 256.4889827269644,
   "start_xy": [
    968575.4134318933,
    6272929.648535244
   ],
   "end_xy": [
    968575.9670204654,
    6272934.617794715
   ]
  },
  "min_10m": {
   "gradient_pct": -5.735301064925693,
   "start_distance_m": 114.0,
   "end_distance_m": 124.0,
   "midpoint_distance_m": 119.0,
   "start_elevation_m": 257.8292375441747,
   "end_elevation_m": 257.25570743768213,
   "start_xy": [
    968572.0736762222,
    6272876.794221545
   ],
   "end_xy": [
    968572.5402081123,
    6272886.7799127
   ]
  },
  "min_20m": {
   "gradient_pct": -4.670960656125658,
   "start_distance_m": 112.0,
   "end_distance_m": 132.0,
   "midpoint_distance_m": 122.0,
   "start_elevation_m": 257.8793657769545,
   "end_elevation_m": 256.94517364572937,
   "start_xy": [
    968571.899924867,
    6272874.801783224
   ],
   "end_xy": [
    968572.7780113918,
    6272894.77637752
   ]
  },
  "min_25m": {
   "gradient_pct": -3.9479875628214813,
   "start_distance_m": 112.0,
   "end_distance_m": 137.0,
   "midpoint_distance_m": 124.5,
   "start_elevation_m": 257.8793657769545,
   "end_elevation_m": 256.89236888624913,
   "start_xy": [
    968571.899924867,
    6272874.801783224
   ],
   "end_xy": [
    968572.9266384413,
    6272899.774168031
   ]
  },
  "min_50m": {
   "gradient_pct": -2.298591311553082,
   "start_distance_m": 112.0,
   "end_distance_m": 162.0,
   "midpoint_distance_m": 137.0,
   "start_elevation_m": 257.8793657769545,
   "end_elevation_m": 256.73007012117796,
   "start_xy": [
    968571.899924867,
    6272874.801783224
   ],
   "end_xy": [
    968574.8598433213,
    6272924.6792757725
   ]
  },
  "min_100m": {
   "gradient_pct": -0.859135830852324,
   "start_distance_m": 80.0,
   "end_distance_m": 180.0,
   "midpoint_distance_m": 130.0,
   "start_elevation_m": 257.3986488951369,
   "end_elevation_m": 256.53951306428456,
   "start_xy": [
    968568.7637752886,
    6272842.9578200355
   ],
   "end_xy": [
    968576.8527621808,
    6272942.568609869
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 41.51430751981877,
   "start_distance_m": 245.0,
   "end_distance_m": 247.0,
   "midpoint_distance_m": 246.0,
   "start_elevation_m": 268.15772509389404,
   "end_elevation_m": 268.9880112442904,
   "start_xy": [
    968586.3212268079,
    6273006.672097071
   ],
   "end_xy": [
    968586.7940883203,
    6273008.615393752
   ]
  },
  "max_3m": {
   "gradient_pct": 37.53142485222535,
   "start_distance_m": 237.0,
   "end_distance_m": 240.0,
   "midpoint_distance_m": 238.5,
   "start_elevation_m": 266.05779733298067,
   "end_elevation_m": 267.18374007854743,
   "start_xy": [
    968584.4297807576,
    6272998.898910347
   ],
   "end_xy": [
    968585.1390730265,
    6273001.813855369
   ]
  }
 },
 "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": 0.43,
   "obstruction_max_height_m": 22.77,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": []
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "41205ec4649bb0a4093af76ff34281a5d9a13832",
   "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-pr6",
   "road_pbf": "block-batch-fr-pr6.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:ba95a0bf562c86eb"
  },
  "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_E968-N6272_0m5@22LHD6QQ-2025-03-24.tif",
   "data/cache/fr/ign-lidarhd_dtm_E968-N6273_0m5@22LHD6QQ-2025-03-24.tif"
  ],
  "calculated_at": "2026-09-25T09:22:53+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-pr6.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-pr6",
  "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": [
   "E968-N6272",
   "E968-N6273"
  ],
  "elevation_blocks": [
   "22LHD6QQ@2025-03-24"
  ],
  "ign_dalles": [
   "LHD_FXX_0968_6273_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0968_6274_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD6QQ"
  ],
  "ign_editions": [
   "2025-03-24"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0968_6273_MNT_O_0M50_LAMB93_IGN69": "2025-03-24",
   "LHD_FXX_0968_6274_MNT_O_0M50_LAMB93_IGN69": "2025-03-24"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 22,
   "stations_resolved": 22,
   "width_median_m": 3.5,
   "width_p10_m": 2.25,
   "width_min_m": 1.25,
   "width_max_m": 7.5,
   "bounded_share": 0.136,
   "unbounded_share": 0.864,
   "confidence_median": 0.0,
   "width_median_bounded_m": 2.5,
   "window_m": [
    233.0,
    258.0
   ],
   "width_at_max25_m": 4.5,
   "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": 22,
    "stations_resolved": 22,
    "width_median_m": 2.62,
    "width_p10_m": 1.27,
    "width_min_m": 0.5,
    "width_max_m": 6.75,
    "bounded_share": 1.0,
    "unbounded_share": 0.0,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.62,
    "window_m": [
     233.0,
     258.0
    ],
    "width_at_max25_m": 2.75,
    "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": "Lorgues",
  "county": "Var",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}