{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (42.1173, 8.9151)",
 "slug": "discovered-lane-42-1173-8-9151",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 28.42441058869838,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 79.0,
   "end_distance_m": 81.0,
   "start_elevation_m": 475.0293043985991,
   "end_elevation_m": 475.59779261037306,
   "min_gradient_pct": -2.854250646123546
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.577529228725933,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 78.0,
   "end_distance_m": 81.0,
   "start_elevation_m": 474.7704667335113,
   "end_elevation_m": 475.59779261037306,
   "min_gradient_pct": -1.0607721040249392
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.469143099260464,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 76.0,
   "end_distance_m": 81.0,
   "start_elevation_m": 474.27433545541004,
   "end_elevation_m": 475.59779261037306,
   "min_gradient_pct": -1.0180651472546742
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.3943469564274,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 71.0,
   "end_distance_m": 81.0,
   "start_elevation_m": 473.0583579147303,
   "end_elevation_m": 475.59779261037306,
   "min_gradient_pct": -0.25783734398260094
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.722764532831775,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 64.0,
   "end_distance_m": 84.0,
   "start_elevation_m": 471.46004911454276,
   "end_elevation_m": 476.2046020211091,
   "min_gradient_pct": 0.42502509942892175
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.265476095235726,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 59.0,
   "end_distance_m": 84.0,
   "start_elevation_m": 470.3882329973002,
   "end_elevation_m": 476.2046020211091,
   "min_gradient_pct": 0.6062686829436643
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.418501541942078,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 34.0,
   "end_distance_m": 84.0,
   "start_elevation_m": 465.99535125013807,
   "end_elevation_m": 476.2046020211091,
   "min_gradient_pct": 2.12688623620204
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 14.872326237534367,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "start_elevation_m": 462.1732262560839,
   "end_elevation_m": 477.0455524936183,
   "min_gradient_pct": 3.0694324502685504
  }
 ],
 "shape": {
  "ascent_concentration": 0.34,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 77.0,
  "shape_class": "sustained"
 },
 "length_m": 1831.4926871804882,
 "start_elevation_m": 462.1732262560839,
 "end_elevation_m": 557.049158325195,
 "endpoint_gain_m": 94.87593206911106,
 "overall_gradient_pct": 5.180251754931595,
 "accumulated_ascent_m": 95.24082754500489,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.469143099260464,
   "start_distance_m": 76.0,
   "end_distance_m": 81.0,
   "midpoint_distance_m": 78.5,
   "start_elevation_m": 474.27433545541004,
   "end_elevation_m": 475.59779261037306,
   "start_xy": [
    1190243.8816458436,
    6131342.23202516
   ],
   "end_xy": [
    1190248.3107848538,
    6131344.551531061
   ]
  },
  "max_10m": {
   "gradient_pct": 25.3943469564274,
   "start_distance_m": 71.0,
   "end_distance_m": 81.0,
   "midpoint_distance_m": 76.0,
   "start_elevation_m": 473.0583579147303,
   "end_elevation_m": 475.59779261037306,
   "start_xy": [
    1190239.4227942827,
    6131339.969583391
   ],
   "end_xy": [
    1190248.3107848538,
    6131344.551531061
   ]
  },
  "max_20m": {
   "gradient_pct": 23.722764532831775,
   "start_distance_m": 64.0,
   "end_distance_m": 84.0,
   "midpoint_distance_m": 74.0,
   "start_elevation_m": 471.46004911454276,
   "end_elevation_m": 476.2046020211091,
   "start_xy": [
    1190233.7652462306,
    6131336.09057755
   ],
   "end_xy": [
    1190250.9569837642,
    6131345.964906923
   ]
  },
  "max_25m": {
   "gradient_pct": 23.265476095235726,
   "start_distance_m": 59.0,
   "end_distance_m": 84.0,
   "midpoint_distance_m": 71.5,
   "start_elevation_m": 470.3882329973002,
   "end_elevation_m": 476.2046020211091,
   "start_xy": [
    1190230.682073116,
    6131332.154330157
   ],
   "end_xy": [
    1190250.9569837642,
    6131345.964906923
   ]
  },
  "max_50m": {
   "gradient_pct": 20.418501541942078,
   "start_distance_m": 34.0,
   "end_distance_m": 84.0,
   "midpoint_distance_m": 59.0,
   "start_elevation_m": 465.99535125013807,
   "end_elevation_m": 476.2046020211091,
   "start_xy": [
    1190226.7172841488,
    6131308.528780911
   ],
   "end_xy": [
    1190250.9569837642,
    6131345.964906923
   ]
  },
  "max_100m": {
   "gradient_pct": 14.872326237534367,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 462.1732262560839,
   "end_elevation_m": 477.0455524936183,
   "start_xy": [
    1190236.405,
    6131275.958
   ],
   "end_xy": [
    1190242.763360624,
    6131350.853364842
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -1.0180651472546742,
   "start_distance_m": 108.0,
   "end_distance_m": 113.0,
   "midpoint_distance_m": 110.5,
   "start_elevation_m": 477.14741469063364,
   "end_elevation_m": 477.0965114332709,
   "start_xy": [
    1190234.859827243,
    6131349.912557456
   ],
   "end_xy": [
    1190230.0732367437,
    6131348.467375324
   ]
  },
  "min_10m": {
   "gradient_pct": -0.25783734398260094,
   "start_distance_m": 104.0,
   "end_distance_m": 114.0,
   "midpoint_distance_m": 109.0,
   "start_elevation_m": 477.13484049372846,
   "end_elevation_m": 477.1090567593302,
   "start_xy": [
    1190238.770633406,
    6131350.612264525
   ],
   "end_xy": [
    1190229.158938923,
    6131348.083079921
   ]
  },
  "min_20m": {
   "gradient_pct": 0.42502509942892175,
   "start_distance_m": 105.0,
   "end_distance_m": 125.0,
   "midpoint_distance_m": 115.0,
   "start_elevation_m": 477.1365476838131,
   "end_elevation_m": 477.2215527036989,
   "start_xy": [
    1190237.7724516015,
    6131350.551989446
   ],
   "end_xy": [
    1190219.8110215443,
    6131342.285111252
   ]
  },
  "min_25m": {
   "gradient_pct": 0.6062686829436643,
   "start_distance_m": 102.0,
   "end_distance_m": 127.0,
   "midpoint_distance_m": 114.5,
   "start_elevation_m": 477.09561979722196,
   "end_elevation_m": 477.2471869679579,
   "start_xy": [
    1190240.7669970149,
    6131350.732814684
   ],
   "end_xy": [
    1190218.1114002028,
    6131341.23093513
   ]
  },
  "min_50m": {
   "gradient_pct": 2.12688623620204,
   "start_distance_m": 86.0,
   "end_distance_m": 136.0,
   "midpoint_distance_m": 111.0,
   "start_elevation_m": 476.525682469569,
   "end_elevation_m": 477.58912558767,
   "start_xy": [
    1190252.721116371,
    6131346.9071574975
   ],
   "end_xy": [
    1190210.4631041659,
    6131336.487142583
   ]
  },
  "min_100m": {
   "gradient_pct": 3.0694324502685504,
   "start_distance_m": 1642.0,
   "end_distance_m": 1742.0,
   "midpoint_distance_m": 1692.0,
   "start_elevation_m": 550.9151809451639,
   "end_elevation_m": 553.9846133954325,
   "start_xy": [
    1189662.802061265,
    6131969.157230949
   ],
   "end_xy": [
    1189634.0557287023,
    6132063.316502451
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 28.42441058869838,
   "start_distance_m": 79.0,
   "end_distance_m": 81.0,
   "midpoint_distance_m": 80.0,
   "start_elevation_m": 475.0293043985991,
   "end_elevation_m": 475.59779261037306,
   "start_xy": [
    1190246.546652247,
    6131343.609280486
   ],
   "end_xy": [
    1190248.3107848538,
    6131344.551531061
   ]
  },
  "max_3m": {
   "gradient_pct": 27.577529228725933,
   "start_distance_m": 78.0,
   "end_distance_m": 81.0,
   "midpoint_distance_m": 79.5,
   "start_elevation_m": 474.7704667335113,
   "end_elevation_m": 475.59779261037306,
   "start_xy": [
    1190245.6645859436,
    6131343.138155199
   ],
   "end_xy": [
    1190248.3107848538,
    6131344.551531061
   ]
  }
 },
 "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": 0.052,
   "obstruction_max_height_m": 19.14,
   "flagged_windows_m": [
    50,
    100
   ]
  },
  "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-co2",
   "road_pbf": "block-batch-fr-co2.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_E1189-N6131_0m5@21LHDCorseUT-2025-04-02.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1189-N6132_0m5@21LHDCorseUT-2025-04-02.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1190-N6131_0m5@21LHDCorseUT-2025-04-02.tif"
  ],
  "calculated_at": "2026-09-25T00:43:29+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-co2.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-co2",
  "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": [
   "E1189-N6131",
   "E1189-N6132",
   "E1190-N6131"
  ],
  "elevation_blocks": [
   "21LHDCorseUT@2025-04-02"
  ],
  "ign_dalles": [
   "LHD_FXX_1189_6132_MNT_O_0M50_LAMB93_IGN78",
   "LHD_FXX_1189_6133_MNT_O_0M50_LAMB93_IGN78",
   "LHD_FXX_1190_6132_MNT_O_0M50_LAMB93_IGN78"
  ],
  "ign_missions": [
   "21LHDCorseUT"
  ],
  "ign_editions": [
   "2025-04-02"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1189_6132_MNT_O_0M50_LAMB93_IGN78": "2025-04-02",
   "LHD_FXX_1189_6133_MNT_O_0M50_LAMB93_IGN78": "2025-04-02",
   "LHD_FXX_1190_6132_MNT_O_0M50_LAMB93_IGN78": "2025-04-02"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 2,
  "carriageway": {
   "stations": 80,
   "stations_resolved": 80,
   "width_median_m": 5.25,
   "width_p10_m": 4.0,
   "width_min_m": 3.25,
   "width_max_m": 10.0,
   "bounded_share": 0.65,
   "unbounded_share": 0.35,
   "confidence_median": 0.691,
   "width_median_bounded_m": 5.0,
   "window_m": [
    59.0,
    84.0
   ],
   "width_at_max25_m": 4.0,
   "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": 80,
    "stations_resolved": 80,
    "width_median_m": 6.5,
    "width_p10_m": 1.98,
    "width_min_m": 0.5,
    "width_max_m": 10.25,
    "bounded_share": 0.825,
    "unbounded_share": 0.175,
    "confidence_median": 1.0,
    "width_median_bounded_m": 5.75,
    "window_m": [
     59.0,
     84.0
    ],
    "width_at_max25_m": 4.75,
    "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": "Azzana",
  "county": "Corse-du-Sud",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}