{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (42.0744, 8.7442)",
 "slug": "discovered-lane-42-0744-8-7442",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 33.27487174003281,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 91.0,
   "end_distance_m": 93.0,
   "start_elevation_m": 78.41632424074778,
   "end_elevation_m": 79.08182167554844,
   "min_gradient_pct": 0.8455377099792827
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 29.51302818551132,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 90.0,
   "end_distance_m": 93.0,
   "start_elevation_m": 78.1964308299831,
   "end_elevation_m": 79.08182167554844,
   "min_gradient_pct": 0.9980347456419736
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.626699159957923,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 88.0,
   "end_distance_m": 93.0,
   "start_elevation_m": 77.75048671755054,
   "end_elevation_m": 79.08182167554844,
   "min_gradient_pct": 1.1652265844873
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.696512495323248,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 83.0,
   "end_distance_m": 93.0,
   "start_elevation_m": 76.71217042601612,
   "end_elevation_m": 79.08182167554844,
   "min_gradient_pct": 1.8362757046932643
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.729567802475245,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 73.0,
   "end_distance_m": 93.0,
   "start_elevation_m": 74.73590811505339,
   "end_elevation_m": 79.08182167554844,
   "min_gradient_pct": 2.6514226263807217
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.855109054378318,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 73.0,
   "end_distance_m": 98.0,
   "start_elevation_m": 74.73590811505339,
   "end_elevation_m": 79.94968537864797,
   "min_gradient_pct": 2.9552289598246375
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.6873959721932,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min"
   ],
   "start_distance_m": 69.0,
   "end_distance_m": 119.0,
   "start_elevation_m": 74.2662824338077,
   "end_elevation_m": 83.1099804199043,
   "min_gradient_pct": 4.274573298717712,
   "suppressed_min_gradient_pct": 4.00253712611638,
   "suppressed_min_location_m": [
    17.0,
    67.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.907324991017644,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 71.0,
   "end_distance_m": 171.0,
   "start_elevation_m": 74.43807592316989,
   "end_elevation_m": 90.34540091418754,
   "min_gradient_pct": 7.687573094215651
  }
 ],
 "shape": {
  "ascent_concentration": 0.313,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 145.0,
  "shape_class": "sustained"
 },
 "length_m": 583.6865202255411,
 "start_elevation_m": 71.59512322876151,
 "end_elevation_m": 142.58940775978454,
 "endpoint_gain_m": 70.99428453102303,
 "overall_gradient_pct": 12.163084476165436,
 "accumulated_ascent_m": 70.99708830730586,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.626699159957923,
   "start_distance_m": 88.0,
   "end_distance_m": 93.0,
   "midpoint_distance_m": 90.5,
   "start_elevation_m": 77.75048671755054,
   "end_elevation_m": 79.08182167554844,
   "start_xy": [
    1175815.4608299753,
    6125592.049153245
   ],
   "end_xy": [
    1175819.0692809327,
    6125595.464570902
   ]
  },
  "max_10m": {
   "gradient_pct": 23.696512495323248,
   "start_distance_m": 83.0,
   "end_distance_m": 93.0,
   "midpoint_distance_m": 88.0,
   "start_elevation_m": 76.71217042601612,
   "end_elevation_m": 79.08182167554844,
   "start_xy": [
    1175811.6544788857,
    6125588.806979379
   ],
   "end_xy": [
    1175819.0692809327,
    6125595.464570902
   ]
  },
  "max_20m": {
   "gradient_pct": 21.729567802475245,
   "start_distance_m": 73.0,
   "end_distance_m": 93.0,
   "midpoint_distance_m": 83.0,
   "start_elevation_m": 74.73590811505339,
   "end_elevation_m": 79.08182167554844,
   "start_xy": [
    1175803.5665830218,
    6125583.306358058
   ],
   "end_xy": [
    1175819.0692809327,
    6125595.464570902
   ]
  },
  "max_25m": {
   "gradient_pct": 20.855109054378318,
   "start_distance_m": 73.0,
   "end_distance_m": 98.0,
   "midpoint_distance_m": 85.5,
   "start_elevation_m": 74.73590811505339,
   "end_elevation_m": 79.94968537864797,
   "start_xy": [
    1175803.5665830218,
    6125583.306358058
   ],
   "end_xy": [
    1175821.7794473001,
    6125599.66635603
   ]
  },
  "max_50m": {
   "gradient_pct": 17.6873959721932,
   "start_distance_m": 69.0,
   "end_distance_m": 119.0,
   "midpoint_distance_m": 94.0,
   "start_elevation_m": 74.2662824338077,
   "end_elevation_m": 83.1099804199043,
   "start_xy": [
    1175799.641984333,
    6125582.5333605595
   ],
   "end_xy": [
    1175831.998716718,
    6125617.599221407
   ]
  },
  "max_100m": {
   "gradient_pct": 15.907324991017644,
   "start_distance_m": 71.0,
   "end_distance_m": 171.0,
   "midpoint_distance_m": 121.0,
   "start_elevation_m": 74.43807592316989,
   "end_elevation_m": 90.34540091418754,
   "start_xy": [
    1175801.6042836774,
    6125582.919859309
   ],
   "end_xy": [
    1175840.5180070575,
    6125645.899563851
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 1.1652265844873,
   "start_distance_m": 60.0,
   "end_distance_m": 65.0,
   "midpoint_distance_m": 62.5,
   "start_elevation_m": 74.05290883875657,
   "end_elevation_m": 74.11117016798093,
   "start_xy": [
    1175793.3404347426,
    6125577.40545448
   ],
   "end_xy": [
    1175795.7173856443,
    6125581.760363062
   ]
  },
  "min_10m": {
   "gradient_pct": 1.8362757046932643,
   "start_distance_m": 56.0,
   "end_distance_m": 66.0,
   "midpoint_distance_m": 61.0,
   "start_elevation_m": 73.94815994936718,
   "end_elevation_m": 74.13178751983651,
   "start_xy": [
    1175791.4824261426,
    6125573.863166513
   ],
   "end_xy": [
    1175796.6985353166,
    6125581.953612437
   ]
  },
  "min_20m": {
   "gradient_pct": 2.6514226263807217,
   "start_distance_m": 48.0,
   "end_distance_m": 68.0,
   "midpoint_distance_m": 58.0,
   "start_elevation_m": 73.68156341756523,
   "end_elevation_m": 74.21184794284137,
   "start_xy": [
    1175788.7211010563,
    6125566.412889447
   ],
   "end_xy": [
    1175798.660834661,
    6125582.340111186
   ]
  },
  "min_25m": {
   "gradient_pct": 2.9552289598246375,
   "start_distance_m": 43.0,
   "end_distance_m": 68.0,
   "midpoint_distance_m": 55.5,
   "start_elevation_m": 73.47304070288521,
   "end_elevation_m": 74.21184794284137,
   "start_xy": [
    1175787.4910678717,
    6125561.566548728
   ],
   "end_xy": [
    1175798.660834661,
    6125582.340111186
   ]
  },
  "min_50m": {
   "gradient_pct": 4.274573298717712,
   "start_distance_m": 21.0,
   "end_distance_m": 71.0,
   "midpoint_distance_m": 46.0,
   "start_elevation_m": 72.30078927381103,
   "end_elevation_m": 74.43807592316989,
   "start_xy": [
    1175790.0961487181,
    6125539.827004019
   ],
   "end_xy": [
    1175801.6042836774,
    6125582.919859309
   ]
  },
  "min_100m": {
   "gradient_pct": 7.687573094215651,
   "start_distance_m": 174.0,
   "end_distance_m": 274.0,
   "midpoint_distance_m": 224.0,
   "start_elevation_m": 90.68195544375325,
   "end_elevation_m": 98.3695285379689,
   "start_xy": [
    1175842.8554519399,
    6125644.019044927
   ],
   "end_xy": [
    1175867.1126757422,
    6125550.798829747
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 33.27487174003281,
   "start_distance_m": 91.0,
   "end_distance_m": 93.0,
   "midpoint_distance_m": 92.0,
   "start_elevation_m": 78.41632424074778,
   "end_elevation_m": 79.08182167554844,
   "start_xy": [
    1175817.744640629,
    6125593.994457565
   ],
   "end_xy": [
    1175819.0692809327,
    6125595.464570902
   ]
  },
  "max_3m": {
   "gradient_pct": 29.51302818551132,
   "start_distance_m": 90.0,
   "end_distance_m": 93.0,
   "midpoint_distance_m": 91.5,
   "start_elevation_m": 78.1964308299831,
   "end_elevation_m": 79.08182167554844,
   "start_xy": [
    1175816.9833704112,
    6125593.346022792
   ],
   "end_xy": [
    1175819.0692809327,
    6125595.464570902
   ]
  }
 },
 "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": 0.036,
   "windows_resited": [],
   "windows_unresolved": [],
   "minima_resited": [
    50.0
   ],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.003,
   "obstruction_max_height_m": 2.41,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    0.0,
    20.0
   ]
  ],
  "review": [],
  "extent": [
   "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_E1175-N6125_0m5@21LHDCorseUT-2025-04-02.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1176-N6125_0m5@21LHDCorseUT-2025-04-02.tif"
  ],
  "calculated_at": "2026-09-25T00:20:34+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": [
   "E1175-N6125",
   "E1176-N6125"
  ],
  "elevation_blocks": [
   "21LHDCorseUT@2025-04-02"
  ],
  "ign_dalles": [
   "LHD_FXX_1175_6126_MNT_O_0M50_LAMB93_IGN78",
   "LHD_FXX_1176_6126_MNT_O_0M50_LAMB93_IGN78"
  ],
  "ign_missions": [
   "21LHDCorseUT"
  ],
  "ign_editions": [
   "2025-04-02"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1175_6126_MNT_O_0M50_LAMB93_IGN78": "2025-04-02",
   "LHD_FXX_1176_6126_MNT_O_0M50_LAMB93_IGN78": "2025-04-02"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 2,
  "structure_mask_ranges_m": [
   [
    0.0,
    15.0
   ]
  ],
  "carriageway": {
   "stations": 30,
   "stations_resolved": 30,
   "width_median_m": 4.88,
   "width_p10_m": 1.98,
   "width_min_m": 1.0,
   "width_max_m": 9.25,
   "bounded_share": 0.467,
   "unbounded_share": 0.533,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.75,
   "window_m": [
    73.0,
    98.0
   ],
   "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": 4.0,
    "width_p10_m": 2.25,
    "width_min_m": 2.25,
    "width_max_m": 10.75,
    "bounded_share": 0.8,
    "unbounded_share": 0.2,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.38,
    "window_m": [
     73.0,
     98.0
    ],
    "width_at_max25_m": 2.25,
    "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": "Casaglione",
  "county": "Corse-du-Sud",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}