{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (43.4175, 6.8532)",
 "slug": "discovered-lane-43-4175-6-8532",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 27.959016599323405,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1290.0,
   "end_distance_m": 1292.0,
   "start_elevation_m": 116.38931827736178,
   "end_elevation_m": 116.94849860934825,
   "min_gradient_pct": -15.943586859700076
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.634058453894284,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1265.0,
   "end_distance_m": 1268.0,
   "start_elevation_m": 110.62857821469021,
   "end_elevation_m": 111.45759996830704,
   "min_gradient_pct": -13.552686789289226
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 27.426263803413917,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1287.0,
   "end_distance_m": 1292.0,
   "start_elevation_m": 115.57718541917755,
   "end_elevation_m": 116.94849860934825,
   "min_gradient_pct": -11.70303649616315
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 26.416144996300943,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1286.0,
   "end_distance_m": 1296.0,
   "start_elevation_m": 115.32545601409572,
   "end_elevation_m": 117.96707051372582,
   "min_gradient_pct": -9.973386246130858
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 25.105466299837786,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1253.0,
   "end_distance_m": 1273.0,
   "start_elevation_m": 107.64783505603978,
   "end_elevation_m": 112.66892831600734,
   "min_gradient_pct": -8.147557520640092
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 24.111870651826393,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1251.0,
   "end_distance_m": 1276.0,
   "start_elevation_m": 107.2391720905375,
   "end_elevation_m": 113.26713975349409,
   "min_gradient_pct": -7.612665361347638
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 23.589092721978233,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1251.0,
   "end_distance_m": 1301.0,
   "start_elevation_m": 107.2391720905375,
   "end_elevation_m": 119.03371845152661,
   "min_gradient_pct": -6.285548569009137
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.540629417099765,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1219.0,
   "end_distance_m": 1319.0,
   "start_elevation_m": 101.57231336627704,
   "end_elevation_m": 122.11294278337681,
   "min_gradient_pct": -4.297511946768502
  }
 ],
 "shape": {
  "ascent_concentration": 0.414,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 190.0,
  "shape_class": "sustained"
 },
 "length_m": 1319.306916339572,
 "start_elevation_m": 16.5126857796732,
 "end_elevation_m": 122.16565072257714,
 "endpoint_gain_m": 105.65296494290394,
 "overall_gradient_pct": 8.008217317319836,
 "accumulated_ascent_m": 112.20143344415263,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 27.426263803413917,
   "start_distance_m": 1287.0,
   "end_distance_m": 1292.0,
   "midpoint_distance_m": 1289.5,
   "start_elevation_m": 115.57718541917755,
   "end_elevation_m": 116.94849860934825,
   "start_xy": [
    1012124.0849754771,
    6264907.88784945
   ],
   "end_xy": [
    1012120.1168638378,
    6264904.845795865
   ]
  },
  "max_10m": {
   "gradient_pct": 26.416144996300943,
   "start_distance_m": 1286.0,
   "end_distance_m": 1296.0,
   "midpoint_distance_m": 1291.0,
   "start_elevation_m": 115.32545601409572,
   "end_elevation_m": 117.96707051372582,
   "start_xy": [
    1012124.8193221344,
    6264908.566311844
   ],
   "end_xy": [
    1012116.9423745264,
    6264902.412152996
   ]
  },
  "max_20m": {
   "gradient_pct": 25.105466299837786,
   "start_distance_m": 1253.0,
   "end_distance_m": 1273.0,
   "midpoint_distance_m": 1263.0,
   "start_elevation_m": 107.64783505603978,
   "end_elevation_m": 112.66892831600734,
   "start_xy": [
    1012124.9982377507,
    6264937.68657641
   ],
   "end_xy": [
    1012127.2912760851,
    6264919.769601251
   ]
  },
  "max_25m": {
   "gradient_pct": 24.111870651826393,
   "start_distance_m": 1251.0,
   "end_distance_m": 1276.0,
   "midpoint_distance_m": 1263.5,
   "start_elevation_m": 107.2391720905375,
   "end_elevation_m": 113.26713975349409,
   "start_xy": [
    1012126.3346633186,
    6264939.167536435
   ],
   "end_xy": [
    1012128.62094955,
    6264917.1159316
   ]
  },
  "max_50m": {
   "gradient_pct": 23.589092721978233,
   "start_distance_m": 1251.0,
   "end_distance_m": 1301.0,
   "midpoint_distance_m": 1276.0,
   "start_elevation_m": 107.2391720905375,
   "end_elevation_m": 119.03371845152661,
   "start_xy": [
    1012126.3346633186,
    6264939.167536435
   ],
   "end_xy": [
    1012112.5621533294,
    6264900.034190758
   ]
  },
  "max_100m": {
   "gradient_pct": 20.540629417099765,
   "start_distance_m": 1219.0,
   "end_distance_m": 1319.0,
   "midpoint_distance_m": 1269.0,
   "start_elevation_m": 101.57231336627704,
   "end_elevation_m": 122.11294278337681,
   "start_xy": [
    1012152.4798081203,
    6264957.538316625
   ],
   "end_xy": [
    1012097.8266299901,
    6264890.200025279
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -11.70303649616315,
   "start_distance_m": 242.0,
   "end_distance_m": 247.0,
   "midpoint_distance_m": 244.5,
   "start_elevation_m": 30.942983870051748,
   "end_elevation_m": 30.35783204524359,
   "start_xy": [
    1011892.3019122672,
    6265106.364912401
   ],
   "end_xy": [
    1011894.8543834909,
    6265110.66431825
   ]
  },
  "min_10m": {
   "gradient_pct": -9.973386246130858,
   "start_distance_m": 239.0,
   "end_distance_m": 249.0,
   "midpoint_distance_m": 244.0,
   "start_elevation_m": 31.17151352251726,
   "end_elevation_m": 30.174174897904173,
   "start_xy": [
    1011890.770429533,
    6265103.785268892
   ],
   "end_xy": [
    1011895.8753719804,
    6265112.384080589
   ]
  },
  "min_20m": {
   "gradient_pct": -8.147557520640092,
   "start_distance_m": 239.0,
   "end_distance_m": 259.0,
   "midpoint_distance_m": 249.0,
   "start_elevation_m": 31.17151352251726,
   "end_elevation_m": 29.54200201838924,
   "start_xy": [
    1011890.770429533,
    6265103.785268892
   ],
   "end_xy": [
    1011901.4559476783,
    6265120.634420684
   ]
  },
  "min_25m": {
   "gradient_pct": -7.612665361347638,
   "start_distance_m": 228.0,
   "end_distance_m": 253.0,
   "midpoint_distance_m": 240.5,
   "start_elevation_m": 31.82307932362552,
   "end_elevation_m": 29.91991298328861,
   "start_xy": [
    1011885.1549928407,
    6265094.326576024
   ],
   "end_xy": [
    1011897.9173489594,
    6265115.823605268
   ]
  },
  "min_50m": {
   "gradient_pct": -6.285548569009137,
   "start_distance_m": 217.0,
   "end_distance_m": 267.0,
   "midpoint_distance_m": 242.0,
   "start_elevation_m": 32.432775266998654,
   "end_elevation_m": 29.290000982494085,
   "start_xy": [
    1011881.1040374811,
    6265084.125519479
   ],
   "end_xy": [
    1011906.7840227829,
    6265126.601967556
   ]
  },
  "min_100m": {
   "gradient_pct": -4.297511946768502,
   "start_distance_m": 210.0,
   "end_distance_m": 310.0,
   "midpoint_distance_m": 260.0,
   "start_elevation_m": 32.58110627981111,
   "end_elevation_m": 28.283594333042608,
   "start_xy": [
    1011878.7015227383,
    6265077.550724964
   ],
   "end_xy": [
    1011936.1753520889,
    6265157.933484729
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 27.959016599323405,
   "start_distance_m": 1290.0,
   "end_distance_m": 1292.0,
   "midpoint_distance_m": 1291.0,
   "start_elevation_m": 116.38931827736178,
   "end_elevation_m": 116.94849860934825,
   "start_xy": [
    1012121.7041084935,
    6264906.062617299
   ],
   "end_xy": [
    1012120.1168638378,
    6264904.845795865
   ]
  },
  "max_3m": {
   "gradient_pct": 27.634058453894284,
   "start_distance_m": 1265.0,
   "end_distance_m": 1268.0,
   "midpoint_distance_m": 1266.5,
   "start_elevation_m": 110.62857821469021,
   "end_elevation_m": 111.45759996830704,
   "start_xy": [
    1012123.2345749118,
    6264926.646533648
   ],
   "end_xy": [
    1012124.6121287554,
    6264923.989431923
   ]
  }
 },
 "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": 0.331,
   "obstruction_max_height_m": 17.84,
   "flagged_windows_m": []
  },
  "review": [],
  "extent": [
   "may_continue_beyond_end"
  ]
 },
 "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-pr8",
   "road_pbf": "block-batch-fr-pr8.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_E1011-N6264_0m5@22LHD6RQ-2025-03-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1011-N6265_0m5@22LHD6RQ-2025-03-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1012-N6264_0m5@22LHD6RQ-2025-03-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1012-N6265_0m5@22LHD6RQ-2025-03-13.tif"
  ],
  "calculated_at": "2026-09-25T08:15:57+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-pr8.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-pr8",
  "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": [
   "E1011-N6264",
   "E1011-N6265",
   "E1012-N6264",
   "E1012-N6265"
  ],
  "elevation_blocks": [
   "22LHD6RQ@2025-03-13"
  ],
  "ign_dalles": [
   "LHD_FXX_1011_6265_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_1011_6266_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_1012_6265_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_1012_6266_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD6RQ"
  ],
  "ign_editions": [
   "2025-03-13"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1011_6265_MNT_O_0M50_LAMB93_IGN69": "2025-03-13",
   "LHD_FXX_1011_6266_MNT_O_0M50_LAMB93_IGN69": "2025-03-13",
   "LHD_FXX_1012_6265_MNT_O_0M50_LAMB93_IGN69": "2025-03-13",
   "LHD_FXX_1012_6266_MNT_O_0M50_LAMB93_IGN69": "2025-03-13"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 4,
  "carriageway": {
   "stations": 59,
   "stations_resolved": 59,
   "width_median_m": 5.75,
   "width_p10_m": 3.25,
   "width_min_m": 1.25,
   "width_max_m": 11.0,
   "bounded_share": 0.407,
   "unbounded_share": 0.593,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.5,
   "window_m": [
    1251.0,
    1276.0
   ],
   "width_at_max25_m": 7.25,
   "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": 59,
    "stations_resolved": 59,
    "width_median_m": 3.25,
    "width_p10_m": 0.75,
    "width_min_m": 0.5,
    "width_max_m": 9.5,
    "bounded_share": 0.898,
    "unbounded_share": 0.102,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.75,
    "window_m": [
     1251.0,
     1276.0
    ],
    "width_at_max25_m": 8.5,
    "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": "Saint-Rapha\u00ebl",
  "county": "Var",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}