{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (42.5219, 8.8678)",
 "slug": "discovered-lane-42-5219-8-8678",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 31.32883858707629,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 159.0,
   "end_distance_m": 161.0,
   "start_elevation_m": 217.56703353452457,
   "end_elevation_m": 218.1936103062661,
   "min_gradient_pct": -2.119788705130077
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 31.210155651298994,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 159.0,
   "end_distance_m": 162.0,
   "start_elevation_m": 217.56703353452457,
   "end_elevation_m": 218.50333820406354,
   "min_gradient_pct": 0.09102851663840283
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 27.775578503572547,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 136.0,
   "end_distance_m": 141.0,
   "start_elevation_m": 212.71356623939633,
   "end_elevation_m": 214.10234516457496,
   "min_gradient_pct": 0.599877692217774
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.993948717680553,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 132.0,
   "end_distance_m": 142.0,
   "start_elevation_m": 211.70071518207726,
   "end_elevation_m": 214.30011005384532,
   "min_gradient_pct": 1.0666356183261883
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.564273357695185,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 121.0,
   "end_distance_m": 141.0,
   "start_elevation_m": 209.18949049303592,
   "end_elevation_m": 214.10234516457496,
   "min_gradient_pct": 1.7655826022712517
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.78751654145742,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 119.0,
   "end_distance_m": 144.0,
   "start_elevation_m": 208.76514389335958,
   "end_elevation_m": 214.71202302872393,
   "min_gradient_pct": 1.850396320190839
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 22.088519522871707,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 112.0,
   "end_distance_m": 162.0,
   "start_elevation_m": 207.45907844262769,
   "end_elevation_m": 218.50333820406354,
   "min_gradient_pct": 2.194460166801889
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.985847646146965,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 72.0,
   "end_distance_m": 172.0,
   "start_elevation_m": 201.2689853533498,
   "end_elevation_m": 220.25483299949676,
   "min_gradient_pct": 2.6484945985168054
  }
 ],
 "shape": {
  "ascent_concentration": 0.519,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 166.0,
  "shape_class": "stepped"
 },
 "length_m": 360.19372224554706,
 "start_elevation_m": 193.17397156005168,
 "end_elevation_m": 226.77210283859887,
 "endpoint_gain_m": 33.598131278547186,
 "overall_gradient_pct": 9.327794795835741,
 "accumulated_ascent_m": 33.770024825755115,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 27.775578503572547,
   "start_distance_m": 136.0,
   "end_distance_m": 141.0,
   "midpoint_distance_m": 138.5,
   "start_elevation_m": 212.71356623939633,
   "end_elevation_m": 214.10234516457496,
   "start_xy": [
    1182396.3312291333,
    6175960.453653515
   ],
   "end_xy": [
    1182398.0250878143,
    6175955.749310547
   ]
  },
  "max_10m": {
   "gradient_pct": 25.993948717680553,
   "start_distance_m": 132.0,
   "end_distance_m": 142.0,
   "midpoint_distance_m": 137.0,
   "start_elevation_m": 211.70071518207726,
   "end_elevation_m": 214.30011005384532,
   "start_xy": [
    1182394.9761421885,
    6175964.21712789
   ],
   "end_xy": [
    1182398.3638595506,
    6175954.808441953
   ]
  },
  "max_20m": {
   "gradient_pct": 24.564273357695185,
   "start_distance_m": 121.0,
   "end_distance_m": 141.0,
   "midpoint_distance_m": 131.0,
   "start_elevation_m": 209.18949049303592,
   "end_elevation_m": 214.10234516457496,
   "start_xy": [
    1182391.2496530903,
    6175974.566682422
   ],
   "end_xy": [
    1182398.0250878143,
    6175955.749310547
   ]
  },
  "max_25m": {
   "gradient_pct": 23.78751654145742,
   "start_distance_m": 119.0,
   "end_distance_m": 144.0,
   "midpoint_distance_m": 131.5,
   "start_elevation_m": 208.76514389335958,
   "end_elevation_m": 214.71202302872393,
   "start_xy": [
    1182390.5721096178,
    6175976.448419609
   ],
   "end_xy": [
    1182399.0414030228,
    6175952.926704765
   ]
  },
  "max_50m": {
   "gradient_pct": 22.088519522871707,
   "start_distance_m": 112.0,
   "end_distance_m": 162.0,
   "midpoint_distance_m": 137.0,
   "start_elevation_m": 207.45907844262769,
   "end_elevation_m": 218.50333820406354,
   "start_xy": [
    1182388.2007074645,
    6175983.034499765
   ],
   "end_xy": [
    1182399.4947589405,
    6175935.748710521
   ]
  },
  "max_100m": {
   "gradient_pct": 18.985847646146965,
   "start_distance_m": 72.0,
   "end_distance_m": 172.0,
   "midpoint_distance_m": 122.0,
   "start_elevation_m": 201.2689853533498,
   "end_elevation_m": 220.25483299949676,
   "start_xy": [
    1182374.6498380161,
    6176020.669243516
   ],
   "end_xy": [
    1182392.3237193543,
    6175929.986945715
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.599877692217774,
   "start_distance_m": 294.0,
   "end_distance_m": 299.0,
   "midpoint_distance_m": 296.5,
   "start_elevation_m": 224.8410107007872,
   "end_elevation_m": 224.87100458539808,
   "start_xy": [
    1182281.8027187858,
    6175883.702005148
   ],
   "end_xy": [
    1182277.1098599366,
    6175881.976584672
   ]
  },
  "min_10m": {
   "gradient_pct": 1.0666356183261883,
   "start_distance_m": 291.0,
   "end_distance_m": 301.0,
   "midpoint_distance_m": 296.0,
   "start_elevation_m": 224.7986931305932,
   "end_elevation_m": 224.9053566924258,
   "start_xy": [
    1182284.6184340953,
    6175884.737257434
   ],
   "end_xy": [
    1182275.232716397,
    6175881.286416481
   ]
  },
  "min_20m": {
   "gradient_pct": 1.7655826022712517,
   "start_distance_m": 201.0,
   "end_distance_m": 221.0,
   "midpoint_distance_m": 211.0,
   "start_elevation_m": 222.2435074516014,
   "end_elevation_m": 222.59662397205565,
   "start_xy": [
    1182369.4823306256,
    6175914.659533857
   ],
   "end_xy": [
    1182350.4558795618,
    6175908.4955935655
   ]
  },
  "min_25m": {
   "gradient_pct": 1.850396320190839,
   "start_distance_m": 196.0,
   "end_distance_m": 221.0,
   "midpoint_distance_m": 208.5,
   "start_elevation_m": 222.13402489200794,
   "end_elevation_m": 222.59662397205565,
   "start_xy": [
    1182374.2389433915,
    6175916.20051893
   ],
   "end_xy": [
    1182350.4558795618,
    6175908.4955935655
   ]
  },
  "min_50m": {
   "gradient_pct": 2.194460166801889,
   "start_distance_m": 190.0,
   "end_distance_m": 240.0,
   "midpoint_distance_m": 215.0,
   "start_elevation_m": 222.02123136307605,
   "end_elevation_m": 223.118461446477,
   "start_xy": [
    1182377.913972005,
    6175920.462533905
   ],
   "end_xy": [
    1182332.4855943574,
    6175902.336546296
   ]
  },
  "min_100m": {
   "gradient_pct": 2.6484945985168054,
   "start_distance_m": 199.0,
   "end_distance_m": 299.0,
   "midpoint_distance_m": 249.0,
   "start_elevation_m": 222.22250998688128,
   "end_elevation_m": 224.87100458539808,
   "start_xy": [
    1182371.3849757318,
    6175915.275927887
   ],
   "end_xy": [
    1182277.1098599366,
    6175881.976584672
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 31.32883858707629,
   "start_distance_m": 159.0,
   "end_distance_m": 161.0,
   "midpoint_distance_m": 160.0,
   "start_elevation_m": 217.56703353452457,
   "end_elevation_m": 218.1936103062661,
   "start_xy": [
    1182400.2653911626,
    6175938.648042509
   ],
   "end_xy": [
    1182399.751636348,
    6175936.7151545165
   ]
  },
  "max_3m": {
   "gradient_pct": 31.210155651298994,
   "start_distance_m": 159.0,
   "end_distance_m": 162.0,
   "midpoint_distance_m": 160.5,
   "start_elevation_m": 217.56703353452457,
   "end_elevation_m": 218.50333820406354,
   "start_xy": [
    1182400.2653911626,
    6175938.648042509
   ],
   "end_xy": [
    1182399.4947589405,
    6175935.748710521
   ]
  }
 },
 "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": 0.169,
   "obstruction_max_height_m": 11.72,
   "flagged_windows_m": [
    5,
    10,
    20,
    25
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "33abfff569d4360542e616d0d42c1b94d0a711fa",
   "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-co1",
   "road_pbf": "block-batch-fr-co1.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": "sha256:2a717d675f2607cc"
  },
  "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_E1182-N6175_0m5@21LHDCorseUS-2025-04-02.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1182-N6176_0m5@21LHDCorseUS-2025-04-02.tif"
  ],
  "calculated_at": "2026-09-25T00:23:53+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-co1.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-co1",
  "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": [
   "E1182-N6175",
   "E1182-N6176"
  ],
  "elevation_blocks": [
   "21LHDCorseUS@2025-04-02"
  ],
  "ign_dalles": [
   "LHD_FXX_1182_6176_MNT_O_0M50_LAMB93_IGN78",
   "LHD_FXX_1182_6177_MNT_O_0M50_LAMB93_IGN78"
  ],
  "ign_missions": [
   "21LHDCorseUS"
  ],
  "ign_editions": [
   "2025-04-02"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1182_6176_MNT_O_0M50_LAMB93_IGN78": "2025-04-02",
   "LHD_FXX_1182_6177_MNT_O_0M50_LAMB93_IGN78": "2025-04-02"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 2,
  "carriageway": {
   "stations": 21,
   "stations_resolved": 21,
   "width_median_m": 4.25,
   "width_p10_m": 2.5,
   "width_min_m": 2.0,
   "width_max_m": 8.0,
   "bounded_share": 0.143,
   "unbounded_share": 0.857,
   "confidence_median": 0.0,
   "width_median_bounded_m": 2.75,
   "window_m": [
    119.0,
    144.0
   ],
   "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": 21,
    "stations_resolved": 21,
    "width_median_m": 2.5,
    "width_p10_m": 1.0,
    "width_min_m": 0.5,
    "width_max_m": 9.75,
    "bounded_share": 0.952,
    "unbounded_share": 0.048,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.38,
    "window_m": [
     119.0,
     144.0
    ],
    "width_at_max25_m": 1.25,
    "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": "Zilia",
  "county": "Haute-Corse",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}