{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (41.7556, 8.7362)",
 "slug": "discovered-lane-41-7556-8-7362",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 33.93208058135144,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 551.0,
   "end_distance_m": 553.0,
   "start_elevation_m": 275.82123304780845,
   "end_elevation_m": 276.4998746594355,
   "min_gradient_pct": -9.326093451792872
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.659632543541573,
   "diagnostic": true,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 551.0,
   "end_distance_m": 554.0,
   "start_elevation_m": 275.82123304780845,
   "end_elevation_m": 276.6510220241147,
   "min_gradient_pct": -8.721161767919247,
   "suppressed_max_gradient_pct": 28.7120859412956,
   "suppressed_location_m": [
    266.0,
    269.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 28.638227992416887,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 551.0,
   "end_distance_m": 556.0,
   "start_elevation_m": 275.82123304780845,
   "end_elevation_m": 277.2531444474293,
   "min_gradient_pct": -6.387697018099061
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.734292316794836,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 552.0,
   "end_distance_m": 562.0,
   "start_elevation_m": 276.08323825631726,
   "end_elevation_m": 278.65666748799674,
   "min_gradient_pct": -4.594061217646299,
   "suppressed_max_gradient_pct": 27.331580891912495,
   "suppressed_location_m": [
    262.0,
    272.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 25.213955772972554,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 551.0,
   "end_distance_m": 571.0,
   "start_elevation_m": 275.82123304780845,
   "end_elevation_m": 280.86402420240296,
   "min_gradient_pct": -3.146529945999532,
   "suppressed_max_gradient_pct": 26.82376364950585,
   "suppressed_location_m": [
    256.0,
    276.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 25.411446428159707,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 551.0,
   "end_distance_m": 576.0,
   "start_elevation_m": 275.82123304780845,
   "end_elevation_m": 282.1740946548484,
   "min_gradient_pct": -2.631029778123775,
   "suppressed_max_gradient_pct": 26.235776577667366,
   "suppressed_location_m": [
    254.0,
    279.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 24.3558724470206,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 551.0,
   "end_distance_m": 601.0,
   "start_elevation_m": 275.82123304780845,
   "end_elevation_m": 287.99916927131875,
   "min_gradient_pct": -0.4013197333148355
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 21.48534361481461,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 525.0,
   "end_distance_m": 625.0,
   "start_elevation_m": 271.21156732593374,
   "end_elevation_m": 292.69691094074835,
   "min_gradient_pct": 2.2420968536013675
  }
 ],
 "shape": {
  "ascent_concentration": 0.356,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 108.0,
  "shape_class": "sustained"
 },
 "length_m": 635.1823899538051,
 "start_elevation_m": 227.08804093873334,
 "end_elevation_m": 293.3899464663059,
 "endpoint_gain_m": 66.30190552757256,
 "overall_gradient_pct": 10.438246805361606,
 "accumulated_ascent_m": 67.56726923202709,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 28.638227992416887,
   "start_distance_m": 551.0,
   "end_distance_m": 556.0,
   "midpoint_distance_m": 553.5,
   "start_elevation_m": 275.82123304780845,
   "end_elevation_m": 277.2531444474293,
   "start_xy": [
    1177787.5137044797,
    6090055.770455501
   ],
   "end_xy": [
    1177790.6689158191,
    6090051.891713256
   ]
  },
  "max_10m": {
   "gradient_pct": 25.734292316794836,
   "start_distance_m": 552.0,
   "end_distance_m": 562.0,
   "midpoint_distance_m": 557.0,
   "start_elevation_m": 276.08323825631726,
   "end_elevation_m": 278.65666748799674,
   "start_xy": [
    1177788.1447467476,
    6090054.994707052
   ],
   "end_xy": [
    1177794.4551694265,
    6090047.237222562
   ]
  },
  "max_20m": {
   "gradient_pct": 25.213955772972554,
   "start_distance_m": 551.0,
   "end_distance_m": 571.0,
   "midpoint_distance_m": 561.0,
   "start_elevation_m": 275.82123304780845,
   "end_elevation_m": 280.86402420240296,
   "start_xy": [
    1177787.5137044797,
    6090055.770455501
   ],
   "end_xy": [
    1177800.1303586934,
    6090040.252087317
   ]
  },
  "max_25m": {
   "gradient_pct": 25.411446428159707,
   "start_distance_m": 551.0,
   "end_distance_m": 576.0,
   "midpoint_distance_m": 563.5,
   "start_elevation_m": 275.82123304780845,
   "end_elevation_m": 282.1740946548484,
   "start_xy": [
    1177787.5137044797,
    6090055.770455501
   ],
   "end_xy": [
    1177804.1350075603,
    6090037.282201171
   ]
  },
  "max_50m": {
   "gradient_pct": 24.3558724470206,
   "start_distance_m": 551.0,
   "end_distance_m": 601.0,
   "midpoint_distance_m": 576.0,
   "start_elevation_m": 275.82123304780845,
   "end_elevation_m": 287.99916927131875,
   "start_xy": [
    1177787.5137044797,
    6090055.770455501
   ],
   "end_xy": [
    1177824.5456785061,
    6090022.845978966
   ]
  },
  "max_100m": {
   "gradient_pct": 21.48534361481461,
   "start_distance_m": 525.0,
   "end_distance_m": 625.0,
   "midpoint_distance_m": 575.0,
   "start_elevation_m": 271.21156732593374,
   "end_elevation_m": 292.69691094074835,
   "start_xy": [
    1177777.1906482622,
    6090075.626154507
   ],
   "end_xy": [
    1177843.858126667,
    6090008.704170096
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -6.387697018099061,
   "start_distance_m": 240.0,
   "end_distance_m": 245.0,
   "midpoint_distance_m": 242.5,
   "start_elevation_m": 244.74279263082929,
   "end_elevation_m": 244.42340777992433,
   "start_xy": [
    1177682.1736522561,
    6090290.670665508
   ],
   "end_xy": [
    1177682.3926381248,
    6090286.196671325
   ]
  },
  "min_10m": {
   "gradient_pct": -4.594061217646299,
   "start_distance_m": 451.0,
   "end_distance_m": 461.0,
   "midpoint_distance_m": 456.0,
   "start_elevation_m": 270.22094485170027,
   "end_elevation_m": 269.76153872993564,
   "start_xy": [
    1177818.17212175,
    6090135.248677422
   ],
   "end_xy": [
    1177816.563378749,
    6090125.470538197
   ]
  },
  "min_20m": {
   "gradient_pct": -3.146529945999532,
   "start_distance_m": 451.0,
   "end_distance_m": 471.0,
   "midpoint_distance_m": 461.0,
   "start_elevation_m": 270.22094485170027,
   "end_elevation_m": 269.59163886250036,
   "start_xy": [
    1177818.17212175,
    6090135.248677422
   ],
   "end_xy": [
    1177812.1633487374,
    6090116.6012478955
   ]
  },
  "min_25m": {
   "gradient_pct": -2.631029778123775,
   "start_distance_m": 451.0,
   "end_distance_m": 476.0,
   "midpoint_distance_m": 463.5,
   "start_elevation_m": 270.22094485170027,
   "end_elevation_m": 269.5631874071693,
   "start_xy": [
    1177818.17212175,
    6090135.248677422
   ],
   "end_xy": [
    1177809.0892412195,
    6090112.682246044
   ]
  },
  "min_50m": {
   "gradient_pct": -0.4013197333148355,
   "start_distance_m": 444.0,
   "end_distance_m": 494.0,
   "midpoint_distance_m": 469.0,
   "start_elevation_m": 269.9584641601703,
   "end_elevation_m": 269.7578042935129,
   "start_xy": [
    1177816.3874990137,
    6090141.895381042
   ],
   "end_xy": [
    1177797.130759752,
    6090099.228818192
   ]
  },
  "min_100m": {
   "gradient_pct": 2.2420968536013675,
   "start_distance_m": 65.0,
   "end_distance_m": 165.0,
   "midpoint_distance_m": 115.0,
   "start_elevation_m": 237.6771096926347,
   "end_elevation_m": 239.91920654623607,
   "start_xy": [
    1177574.3559091485,
    6090165.643381648
   ],
   "end_xy": [
    1177653.1400123402,
    6090222.500670572
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 33.93208058135144,
   "start_distance_m": 551.0,
   "end_distance_m": 553.0,
   "midpoint_distance_m": 552.0,
   "start_elevation_m": 275.82123304780845,
   "end_elevation_m": 276.4998746594355,
   "start_xy": [
    1177787.5137044797,
    6090055.770455501
   ],
   "end_xy": [
    1177788.7757890155,
    6090054.218958602
   ]
  },
  "max_3m": {
   "gradient_pct": 27.659632543541573,
   "start_distance_m": 551.0,
   "end_distance_m": 554.0,
   "midpoint_distance_m": 552.5,
   "start_elevation_m": 275.82123304780845,
   "end_elevation_m": 276.6510220241147,
   "start_xy": [
    1177787.5137044797,
    6090055.770455501
   ],
   "end_xy": [
    1177789.4068312834,
    6090053.443210154
   ]
  }
 },
 "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": {
  "texture_suppression": {
   "masked_fraction": 0.047,
   "windows_resited": [
    3.0,
    10.0,
    20.0,
    25.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 254.0,
     "end_m": 279.0,
     "raw_pct": 26.24,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 256.0,
     "end_m": 276.0,
     "raw_pct": 26.82,
     "reason": "hump"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.13,
   "obstruction_max_height_m": 16.23,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    252.0,
    281.0
   ]
  ],
  "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-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_E1177-N6089_0m5@21LHDCorseUT-2025-04-02.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1177-N6090_0m5@21LHDCorseUT-2025-04-02.tif"
  ],
  "calculated_at": "2026-09-25T00:23:46+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": [
   "E1177-N6089",
   "E1177-N6090"
  ],
  "elevation_blocks": [
   "21LHDCorseUT@2025-04-02"
  ],
  "ign_dalles": [
   "LHD_FXX_1177_6090_MNT_O_0M50_LAMB93_IGN78",
   "LHD_FXX_1177_6091_MNT_O_0M50_LAMB93_IGN78"
  ],
  "ign_missions": [
   "21LHDCorseUT"
  ],
  "ign_editions": [
   "2025-04-02"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1177_6090_MNT_O_0M50_LAMB93_IGN78": "2025-04-02",
   "LHD_FXX_1177_6091_MNT_O_0M50_LAMB93_IGN78": "2025-04-02"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 3,
  "carriageway": {
   "stations": 32,
   "stations_resolved": 32,
   "width_median_m": 4.25,
   "width_p10_m": 2.52,
   "width_min_m": 1.25,
   "width_max_m": 10.75,
   "bounded_share": 0.344,
   "unbounded_share": 0.656,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.0,
   "window_m": [
    551.0,
    576.0
   ],
   "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": 32,
    "stations_resolved": 32,
    "width_median_m": 3.75,
    "width_p10_m": 1.27,
    "width_min_m": 1.0,
    "width_max_m": 10.25,
    "bounded_share": 0.844,
    "unbounded_share": 0.156,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.75,
    "window_m": [
     551.0,
     576.0
    ],
    "width_at_max25_m": 2.5,
    "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": "Coti-Chiavari",
  "county": "Corse-du-Sud",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}