{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (42.3729, 9.3456)",
 "slug": "discovered-lane-42-3729-9-3456",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 23.2766962405492,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 390.0,
   "end_distance_m": 392.0,
   "start_elevation_m": 689.3834127418368,
   "end_elevation_m": 689.8489466666477,
   "min_gradient_pct": -4.775865117727562,
   "suppressed_max_gradient_pct": 82.73398826847824,
   "suppressed_location_m": [
    328.0,
    330.0
   ],
   "suppressed_min_gradient_pct": -76.28368463418838,
   "suppressed_min_location_m": [
    326.0,
    328.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.456312201184875,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 119.0,
   "end_distance_m": 122.0,
   "start_elevation_m": 661.9353659263201,
   "end_elevation_m": 662.6090552923556,
   "min_gradient_pct": -4.39771790231589,
   "suppressed_max_gradient_pct": 55.83171783905527,
   "suppressed_location_m": [
    328.0,
    331.0
   ],
   "suppressed_min_gradient_pct": -50.45845768942172,
   "suppressed_min_location_m": [
    325.0,
    328.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.04697159901798,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 118.0,
   "end_distance_m": 123.0,
   "start_elevation_m": 661.7154177920797,
   "end_elevation_m": 662.8177663720306,
   "min_gradient_pct": -3.940026465822939,
   "suppressed_max_gradient_pct": 34.05323072143801,
   "suppressed_location_m": [
    328.0,
    333.0
   ],
   "suppressed_min_gradient_pct": -27.834088446159058,
   "suppressed_min_location_m": [
    323.0,
    328.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.677709178752593,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min"
   ],
   "start_distance_m": 118.0,
   "end_distance_m": 128.0,
   "start_elevation_m": 661.7154177920797,
   "end_elevation_m": 663.883188709955,
   "min_gradient_pct": -2.6299884664013007,
   "suppressed_min_gradient_pct": -14.508517443944129,
   "suppressed_min_location_m": [
    318.0,
    328.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.317045355694972,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min"
   ],
   "start_distance_m": 114.0,
   "end_distance_m": 134.0,
   "start_elevation_m": 660.8963887778891,
   "end_elevation_m": 665.1597978490281,
   "min_gradient_pct": -1.463799659804863,
   "suppressed_min_gradient_pct": -8.26541435197555,
   "suppressed_min_location_m": [
    308.0,
    328.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.936536598883777,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min"
   ],
   "start_distance_m": 114.0,
   "end_distance_m": 139.0,
   "start_elevation_m": 660.8963887778891,
   "end_elevation_m": 666.1305229276101,
   "min_gradient_pct": -0.8792233814879182,
   "suppressed_min_gradient_pct": -6.737857417075702,
   "suppressed_min_location_m": [
    303.0,
    328.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.19827870459676,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min"
   ],
   "start_distance_m": 94.0,
   "end_distance_m": 144.0,
   "start_elevation_m": 657.0212090514189,
   "end_elevation_m": 667.1203484037172,
   "min_gradient_pct": 0.7382925945109946,
   "suppressed_min_gradient_pct": -2.3699837740978182,
   "suppressed_min_location_m": [
    278.0,
    328.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.03497290202904,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min"
   ],
   "start_distance_m": 40.0,
   "end_distance_m": 140.0,
   "start_elevation_m": 648.2907942012429,
   "end_elevation_m": 666.3257671032719,
   "min_gradient_pct": 6.725359360921743,
   "suppressed_min_gradient_pct": 4.54149026222251,
   "suppressed_min_location_m": [
    228.0,
    328.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.324,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 147.0,
  "shape_class": "sustained"
 },
 "length_m": 583.800345547964,
 "start_elevation_m": 644.4090842099556,
 "end_elevation_m": 717.2029699364675,
 "endpoint_gain_m": 72.79388572651192,
 "overall_gradient_pct": 12.468969277191238,
 "accumulated_ascent_m": 74.71927204798601,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.04697159901798,
   "start_distance_m": 118.0,
   "end_distance_m": 123.0,
   "midpoint_distance_m": 120.5,
   "start_elevation_m": 661.7154177920797,
   "end_elevation_m": 662.8177663720306,
   "start_xy": [
    1223063.9181758116,
    6162444.767083332
   ],
   "end_xy": [
    1223058.9614589785,
    6162444.110609238
   ]
  },
  "max_10m": {
   "gradient_pct": 21.677709178752593,
   "start_distance_m": 118.0,
   "end_distance_m": 128.0,
   "midpoint_distance_m": 123.0,
   "start_elevation_m": 661.7154177920797,
   "end_elevation_m": 663.883188709955,
   "start_xy": [
    1223063.9181758116,
    6162444.767083332
   ],
   "end_xy": [
    1223054.0015365754,
    6162443.527547554
   ]
  },
  "max_20m": {
   "gradient_pct": 21.317045355694972,
   "start_distance_m": 114.0,
   "end_distance_m": 134.0,
   "midpoint_distance_m": 124.0,
   "start_elevation_m": 660.8963887778891,
   "end_elevation_m": 665.1597978490281,
   "start_xy": [
    1223067.8835492781,
    6162445.292262606
   ],
   "end_xy": [
    1223048.0074496767,
    6162443.793859872
   ]
  },
  "max_25m": {
   "gradient_pct": 20.936536598883777,
   "start_distance_m": 114.0,
   "end_distance_m": 139.0,
   "midpoint_distance_m": 126.5,
   "start_elevation_m": 660.8963887778891,
   "end_elevation_m": 666.1305229276101,
   "start_xy": [
    1223067.8835492781,
    6162445.292262606
   ],
   "end_xy": [
    1223043.0123772612,
    6162444.015786804
   ]
  },
  "max_50m": {
   "gradient_pct": 20.19827870459676,
   "start_distance_m": 94.0,
   "end_distance_m": 144.0,
   "midpoint_distance_m": 119.0,
   "start_elevation_m": 657.0212090514189,
   "end_elevation_m": 667.1203484037172,
   "start_xy": [
    1223087.6426479714,
    6162448.365421415
   ],
   "end_xy": [
    1223038.0173048456,
    6162444.237713736
   ]
  },
  "max_100m": {
   "gradient_pct": 18.03497290202904,
   "start_distance_m": 40.0,
   "end_distance_m": 140.0,
   "midpoint_distance_m": 90.0,
   "start_elevation_m": 648.2907942012429,
   "end_elevation_m": 666.3257671032719,
   "start_xy": [
    1223140.703873291,
    6162441.736661182
   ],
   "end_xy": [
    1223042.0133627781,
    6162444.06017219
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -3.940026465822939,
   "start_distance_m": 310.0,
   "end_distance_m": 315.0,
   "midpoint_distance_m": 312.5,
   "start_elevation_m": 683.2794169476898,
   "end_elevation_m": 683.0824156243987,
   "start_xy": [
    1222884.2418837822,
    6162462.130533284
   ],
   "end_xy": [
    1222880.3121979747,
    6162465.222065178
   ]
  },
  "min_10m": {
   "gradient_pct": -2.6299884664013007,
   "start_distance_m": 305.0,
   "end_distance_m": 315.0,
   "midpoint_distance_m": 310.0,
   "start_elevation_m": 683.3454144710388,
   "end_elevation_m": 683.0824156243987,
   "start_xy": [
    1222888.6146340603,
    6162459.967950994
   ],
   "end_xy": [
    1222880.3121979747,
    6162465.222065178
   ]
  },
  "min_20m": {
   "gradient_pct": -1.463799659804863,
   "start_distance_m": 303.0,
   "end_distance_m": 323.0,
   "midpoint_distance_m": 313.0,
   "start_elevation_m": 683.346564665252,
   "end_elevation_m": 683.053804733291,
   "start_xy": [
    1222890.5648921558,
    6162459.524675277
   ],
   "end_xy": [
    1222876.4014567353,
    6162471.313285228
   ]
  },
  "min_25m": {
   "gradient_pct": -0.8792233814879182,
   "start_distance_m": 298.0,
   "end_distance_m": 323.0,
   "midpoint_distance_m": 310.5,
   "start_elevation_m": 683.273610578663,
   "end_elevation_m": 683.053804733291,
   "start_xy": [
    1222895.4405373943,
    6162458.416485985
   ],
   "end_xy": [
    1222876.4014567353,
    6162471.313285228
   ]
  },
  "min_50m": {
   "gradient_pct": 0.7382925945109946,
   "start_distance_m": 273.0,
   "end_distance_m": 323.0,
   "midpoint_distance_m": 298.0,
   "start_elevation_m": 682.6846584360355,
   "end_elevation_m": 683.053804733291,
   "start_xy": [
    1222920.0360469136,
    6162457.749166683
   ],
   "end_xy": [
    1222876.4014567353,
    6162471.313285228
   ]
  },
  "min_100m": {
   "gradient_pct": 6.725359360921743,
   "start_distance_m": 223.0,
   "end_distance_m": 323.0,
   "midpoint_distance_m": 273.0,
   "start_elevation_m": 676.3284453723693,
   "end_elevation_m": 683.053804733291,
   "start_xy": [
    1222966.6826047418,
    6162473.252207705
   ],
   "end_xy": [
    1222876.4014567353,
    6162471.313285228
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 23.2766962405492,
   "start_distance_m": 390.0,
   "end_distance_m": 392.0,
   "midpoint_distance_m": 391.0,
   "start_elevation_m": 689.3834127418368,
   "end_elevation_m": 689.8489466666477,
   "start_xy": [
    1222892.3747904142,
    6162509.670495302
   ],
   "end_xy": [
    1222890.4031550589,
    6162509.334855576
   ]
  },
  "max_3m": {
   "gradient_pct": 22.456312201184875,
   "start_distance_m": 119.0,
   "end_distance_m": 122.0,
   "midpoint_distance_m": 120.5,
   "start_elevation_m": 661.9353659263201,
   "end_elevation_m": 662.6090552923556,
   "start_xy": [
    1223062.926832445,
    6162444.635788512
   ],
   "end_xy": [
    1223059.952802345,
    6162444.241904057
   ]
  }
 },
 "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": 0.015,
   "windows_resited": [
    2.0,
    3.0,
    5.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.038,
   "obstruction_max_height_m": 11.81,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    324.0,
    332.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_end"
  ]
 },
 "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-co3",
   "road_pbf": "block-batch-fr-co3.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_E1222-N6162_0m5@21LHDCorseVS-2025-04-02.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1223-N6162_0m5@21LHDCorseVS-2025-04-02.tif"
  ],
  "calculated_at": "2026-09-25T00:53:21+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-co3.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-co3",
  "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": [
   "E1222-N6162",
   "E1223-N6162"
  ],
  "elevation_blocks": [
   "21LHDCorseVS@2025-04-02"
  ],
  "ign_dalles": [
   "LHD_FXX_1222_6163_MNT_O_0M50_LAMB93_IGN78",
   "LHD_FXX_1223_6163_MNT_O_0M50_LAMB93_IGN78"
  ],
  "ign_missions": [
   "21LHDCorseVS"
  ],
  "ign_editions": [
   "2025-04-02"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1222_6163_MNT_O_0M50_LAMB93_IGN78": "2025-04-02",
   "LHD_FXX_1223_6163_MNT_O_0M50_LAMB93_IGN78": "2025-04-02"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 30,
   "stations_resolved": 30,
   "width_median_m": 5.5,
   "width_p10_m": 3.98,
   "width_min_m": 3.0,
   "width_max_m": 12.0,
   "bounded_share": 0.067,
   "unbounded_share": 0.933,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.5,
   "window_m": [
    114.0,
    139.0
   ],
   "width_at_max25_m": 4.75,
   "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": 30,
    "stations_resolved": 30,
    "width_median_m": 7.5,
    "width_p10_m": 3.93,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.567,
    "unbounded_share": 0.433,
    "confidence_median": 1.0,
    "width_median_bounded_m": 5.25,
    "window_m": [
     114.0,
     139.0
    ],
    "width_at_max25_m": 4.5,
    "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": "Pie-d'Orezza",
  "county": "Haute-Corse",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}