{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (42.6898, 9.4190)",
 "slug": "discovered-lane-42-6898-9-4190",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 28.859220198685875,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 60.0,
   "end_distance_m": 62.0,
   "start_elevation_m": 263.40141067924964,
   "end_elevation_m": 263.97859508322335,
   "min_gradient_pct": -7.989294160856275
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.027788697690386,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 60.0,
   "end_distance_m": 63.0,
   "start_elevation_m": 263.40141067924964,
   "end_elevation_m": 264.21224434018035,
   "min_gradient_pct": -7.583966134082705
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.319084713684106,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 125.0,
   "end_distance_m": 130.0,
   "start_elevation_m": 273.51291872615997,
   "end_elevation_m": 274.7788729618442,
   "min_gradient_pct": -7.194461803121612
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.688121306360244,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 58.0,
   "end_distance_m": 68.0,
   "start_elevation_m": 262.9762142391919,
   "end_elevation_m": 265.44502636982793,
   "min_gradient_pct": -3.5815031688053978
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.82774978325625,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 50.0,
   "end_distance_m": 70.0,
   "start_elevation_m": 261.45685933062975,
   "end_elevation_m": 265.822409287281,
   "min_gradient_pct": 1.093868362050614
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.378680399832774,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 50.0,
   "end_distance_m": 75.0,
   "start_elevation_m": 261.45685933062975,
   "end_elevation_m": 266.55152943058795,
   "min_gradient_pct": 1.8604370364218994
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 16.780860015224448,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 20.0,
   "end_distance_m": 70.0,
   "start_elevation_m": 257.4319792796688,
   "end_elevation_m": 265.822409287281,
   "min_gradient_pct": 3.9543855847084615
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.82318316040056,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 31.0,
   "end_distance_m": 131.0,
   "start_elevation_m": 259.14439450026896,
   "end_elevation_m": 274.9675776606695,
   "min_gradient_pct": 4.2735266562384595
  }
 ],
 "shape": {
  "ascent_concentration": 0.396,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 136.0,
  "shape_class": "sustained"
 },
 "length_m": 658.9999999997142,
 "start_elevation_m": 254.45910086430416,
 "end_elevation_m": 309.71406072565406,
 "endpoint_gain_m": 55.2549598613499,
 "overall_gradient_pct": 8.384667657264623,
 "accumulated_ascent_m": 55.8151104945955,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.319084713684106,
   "start_distance_m": 125.0,
   "end_distance_m": 130.0,
   "midpoint_distance_m": 127.5,
   "start_elevation_m": 273.51291872615997,
   "end_elevation_m": 274.7788729618442,
   "start_xy": [
    1226244.3965535176,
    6197855.464287909
   ],
   "end_xy": [
    1226244.7042164754,
    6197860.454813282
   ]
  },
  "max_10m": {
   "gradient_pct": 24.688121306360244,
   "start_distance_m": 58.0,
   "end_distance_m": 68.0,
   "midpoint_distance_m": 63.0,
   "start_elevation_m": 262.9762142391919,
   "end_elevation_m": 265.44502636982793,
   "start_xy": [
    1226244.5197039966,
    6197807.979434272
   ],
   "end_xy": [
    1226234.6570857568,
    6197808.1587483445
   ]
  },
  "max_20m": {
   "gradient_pct": 21.82774978325625,
   "start_distance_m": 50.0,
   "end_distance_m": 70.0,
   "midpoint_distance_m": 60.0,
   "start_elevation_m": 261.45685933062975,
   "end_elevation_m": 265.822409287281,
   "start_xy": [
    1226252.4718116515,
    6197808.799235199
   ],
   "end_xy": [
    1226233.2969600523,
    6197809.600261418
   ]
  },
  "max_25m": {
   "gradient_pct": 20.378680399832774,
   "start_distance_m": 50.0,
   "end_distance_m": 75.0,
   "midpoint_distance_m": 62.5,
   "start_elevation_m": 261.45685933062975,
   "end_elevation_m": 266.55152943058795,
   "start_xy": [
    1226252.4718116515,
    6197808.799235199
   ],
   "end_xy": [
    1226229.9692466685,
    6197813.332060399
   ]
  },
  "max_50m": {
   "gradient_pct": 16.780860015224448,
   "start_distance_m": 20.0,
   "end_distance_m": 70.0,
   "midpoint_distance_m": 45.0,
   "start_elevation_m": 257.4319792796688,
   "end_elevation_m": 265.822409287281,
   "start_xy": [
    1226236.2546453828,
    6197790.601341531
   ],
   "end_xy": [
    1226233.2969600523,
    6197809.600261418
   ]
  },
  "max_100m": {
   "gradient_pct": 15.82318316040056,
   "start_distance_m": 31.0,
   "end_distance_m": 131.0,
   "midpoint_distance_m": 81.0,
   "start_elevation_m": 259.14439450026896,
   "end_elevation_m": 274.9675776606695,
   "start_xy": [
    1226245.479987774,
    6197796.59242305
   ],
   "end_xy": [
    1226244.765749067,
    6197861.452918356
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -7.194461803121612,
   "start_distance_m": 135.0,
   "end_distance_m": 140.0,
   "midpoint_distance_m": 137.5,
   "start_elevation_m": 275.0901536168489,
   "end_elevation_m": 274.7304305266928,
   "start_xy": [
    1226245.0118794332,
    6197865.445338655
   ],
   "end_xy": [
    1226245.319542391,
    6197870.435864029
   ]
  },
  "min_10m": {
   "gradient_pct": -3.5815031688053978,
   "start_distance_m": 133.0,
   "end_distance_m": 143.0,
   "midpoint_distance_m": 138.0,
   "start_elevation_m": 275.15929540198204,
   "end_elevation_m": 274.8011450851015,
   "start_xy": [
    1226244.8888142502,
    6197863.449128506
   ],
   "end_xy": [
    1226243.426150096,
    6197869.960454583
   ]
  },
  "min_20m": {
   "gradient_pct": 1.093868362050614,
   "start_distance_m": 133.0,
   "end_distance_m": 153.0,
   "midpoint_distance_m": 143.0,
   "start_elevation_m": 275.15929540198204,
   "end_elevation_m": 275.37806907439216,
   "start_xy": [
    1226244.8888142502,
    6197863.449128506
   ],
   "end_xy": [
    1226234.3367221185,
    6197865.917187117
   ]
  },
  "min_25m": {
   "gradient_pct": 1.8604370364218994,
   "start_distance_m": 133.0,
   "end_distance_m": 158.0,
   "midpoint_distance_m": 145.5,
   "start_elevation_m": 275.15929540198204,
   "end_elevation_m": 275.6244046610875,
   "start_xy": [
    1226244.8888142502,
    6197863.449128506
   ],
   "end_xy": [
    1226229.4078594556,
    6197866.524225836
   ]
  },
  "min_50m": {
   "gradient_pct": 3.9543855847084615,
   "start_distance_m": 133.0,
   "end_distance_m": 183.0,
   "midpoint_distance_m": 158.0,
   "start_elevation_m": 275.15929540198204,
   "end_elevation_m": 277.13648819433627,
   "start_xy": [
    1226244.8888142502,
    6197863.449128506
   ],
   "end_xy": [
    1226206.9687221413,
    6197876.570172382
   ]
  },
  "min_100m": {
   "gradient_pct": 4.2735266562384595,
   "start_distance_m": 133.0,
   "end_distance_m": 233.0,
   "midpoint_distance_m": 183.0,
   "start_elevation_m": 275.15929540198204,
   "end_elevation_m": 279.4328220582205,
   "start_xy": [
    1226244.8888142502,
    6197863.449128506
   ],
   "end_xy": [
    1226161.9537645627,
    6197897.958195723
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 28.859220198685875,
   "start_distance_m": 60.0,
   "end_distance_m": 62.0,
   "midpoint_distance_m": 61.0,
   "start_elevation_m": 263.40141067924964,
   "end_elevation_m": 263.97859508322335,
   "start_xy": [
    1226242.5395304991,
    6197807.698519838
   ],
   "end_xy": [
    1226240.5593570014,
    6197807.417605404
   ]
  },
  "max_3m": {
   "gradient_pct": 27.027788697690386,
   "start_distance_m": 60.0,
   "end_distance_m": 63.0,
   "midpoint_distance_m": 61.5,
   "start_elevation_m": 263.40141067924964,
   "end_elevation_m": 264.21224434018035,
   "start_xy": [
    1226242.5395304991,
    6197807.698519838
   ],
   "end_xy": [
    1226239.5692702525,
    6197807.277148187
   ]
  }
 },
 "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": 0.02,
   "obstruction_max_height_m": 12.24,
   "flagged_windows_m": [
    2,
    3,
    10,
    20,
    25
   ]
  },
  "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-co4",
   "road_pbf": "block-batch-fr-co4.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_E1225-N6197_0m5@21LHDCorseVS-2025-04-02.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1225-N6198_0m5@21LHDCorseVS-2025-04-02.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1226-N6197_0m5@21LHDCorseVS-2025-04-02.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1226-N6198_0m5@21LHDCorseVS-2025-04-02.tif"
  ],
  "calculated_at": "2026-09-25T00:23:27+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-co4.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-co4",
  "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": [
   "E1225-N6197",
   "E1225-N6198",
   "E1226-N6197",
   "E1226-N6198"
  ],
  "elevation_blocks": [
   "21LHDCorseVS@2025-04-02"
  ],
  "ign_dalles": [
   "LHD_FXX_1225_6198_MNT_O_0M50_LAMB93_IGN78",
   "LHD_FXX_1225_6199_MNT_O_0M50_LAMB93_IGN78",
   "LHD_FXX_1226_6198_MNT_O_0M50_LAMB93_IGN78",
   "LHD_FXX_1226_6199_MNT_O_0M50_LAMB93_IGN78"
  ],
  "ign_missions": [
   "21LHDCorseVS"
  ],
  "ign_editions": [
   "2025-04-02"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1225_6198_MNT_O_0M50_LAMB93_IGN78": "2025-04-02",
   "LHD_FXX_1225_6199_MNT_O_0M50_LAMB93_IGN78": "2025-04-02",
   "LHD_FXX_1226_6198_MNT_O_0M50_LAMB93_IGN78": "2025-04-02",
   "LHD_FXX_1226_6199_MNT_O_0M50_LAMB93_IGN78": "2025-04-02"
  },
  "route_summit_trim_m": 189.4,
  "route_summit_trim_loss_m": 16.4,
  "climb_origin": "discovered",
  "structure_own_ways": 3,
  "carriageway": {
   "stations": 31,
   "stations_resolved": 31,
   "width_median_m": 7.5,
   "width_p10_m": 4.25,
   "width_min_m": 3.25,
   "width_max_m": 12.0,
   "bounded_share": 0.161,
   "unbounded_share": 0.839,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.0,
   "window_m": [
    50.0,
    75.0
   ],
   "width_at_max25_m": 5.12,
   "window_stations": 6,
   "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": 31,
    "stations_resolved": 31,
    "width_median_m": 8.75,
    "width_p10_m": 3.5,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.581,
    "unbounded_share": 0.419,
    "confidence_median": 1.0,
    "width_median_bounded_m": 7.38,
    "window_m": [
     50.0,
     75.0
    ],
    "width_at_max25_m": 4.75,
    "window_stations": 6,
    "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": "Bastia",
  "county": "Haute-Corse",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}