{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (43.7804, 7.4777)",
 "slug": "discovered-lane-43-7804-7-4777",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 46.071204809639,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 374.0,
   "end_distance_m": 376.0,
   "start_elevation_m": 101.53379652746013,
   "end_elevation_m": 102.4552206236529,
   "min_gradient_pct": -46.92298489045044,
   "suppressed_max_gradient_pct": 84.60167679765505,
   "suppressed_location_m": [
    364.0,
    366.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 47.246953896353716,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 373.0,
   "end_distance_m": 376.0,
   "start_elevation_m": 101.0378120067623,
   "end_elevation_m": 102.4552206236529,
   "min_gradient_pct": -40.5627776408276,
   "suppressed_max_gradient_pct": 71.70505157720488,
   "suppressed_location_m": [
    363.0,
    366.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 43.362969622492926,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 372.0,
   "end_distance_m": 377.0,
   "start_elevation_m": 100.6998260688175,
   "end_elevation_m": 102.86797454994215,
   "min_gradient_pct": -22.788486508281096,
   "suppressed_max_gradient_pct": 58.33252669606367,
   "suppressed_location_m": [
    362.0,
    367.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.935505033659496,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 467.0,
   "end_distance_m": 477.0,
   "start_elevation_m": 114.09596172576644,
   "end_elevation_m": 116.3895122291324,
   "min_gradient_pct": -8.090094915367558,
   "suppressed_max_gradient_pct": 41.713744229933525,
   "suppressed_location_m": [
    357.0,
    367.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.182260647466165,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 457.0,
   "end_distance_m": 477.0,
   "start_elevation_m": 111.95306009963916,
   "end_elevation_m": 116.3895122291324,
   "min_gradient_pct": -1.4951062411476812,
   "suppressed_max_gradient_pct": 37.37284558323822,
   "suppressed_location_m": [
    357.0,
    377.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.11222878434791,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 453.0,
   "end_distance_m": 478.0,
   "start_elevation_m": 111.08074641371371,
   "end_elevation_m": 116.60880360980069,
   "min_gradient_pct": -0.17715371443136974,
   "suppressed_max_gradient_pct": 33.77828953669581,
   "suppressed_location_m": [
    352.0,
    377.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.33594621262651,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 428.0,
   "end_distance_m": 478.0,
   "start_elevation_m": 105.94083050348743,
   "end_elevation_m": 116.60880360980069,
   "min_gradient_pct": 1.5086738364081071,
   "suppressed_max_gradient_pct": 26.97627766412592,
   "suppressed_location_m": [
    327.0,
    377.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.678911633767655,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 261.0,
   "end_distance_m": 361.0,
   "start_elevation_m": 76.74030483342327,
   "end_elevation_m": 96.41921646719092,
   "min_gradient_pct": 5.628566891098053,
   "suppressed_max_gradient_pct": 24.052126780575236,
   "suppressed_location_m": [
    277.0,
    377.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.378,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 119.0,
  "shape_class": "sustained"
 },
 "length_m": 602.5267411489765,
 "start_elevation_m": 53.44769971827041,
 "end_elevation_m": 131.3005000537616,
 "endpoint_gain_m": 77.8528003354912,
 "overall_gradient_pct": 12.921053128203294,
 "accumulated_ascent_m": 79.61639501579722,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 43.362969622492926,
   "start_distance_m": 372.0,
   "end_distance_m": 377.0,
   "midpoint_distance_m": 374.5,
   "start_elevation_m": 100.6998260688175,
   "end_elevation_m": 102.86797454994215,
   "start_xy": [
    1060338.2796724462,
    6308146.9583584415
   ],
   "end_xy": [
    1060333.3347807983,
    6308146.8355865935
   ]
  },
  "max_10m": {
   "gradient_pct": 22.935505033659496,
   "start_distance_m": 467.0,
   "end_distance_m": 477.0,
   "midpoint_distance_m": 472.0,
   "start_elevation_m": 114.09596172576644,
   "end_elevation_m": 116.3895122291324,
   "start_xy": [
    1060297.931185803,
    6308150.610255199
   ],
   "end_xy": [
    1060288.1865022492,
    6308148.74201209
   ]
  },
  "max_20m": {
   "gradient_pct": 22.182260647466165,
   "start_distance_m": 457.0,
   "end_distance_m": 477.0,
   "midpoint_distance_m": 467.0,
   "start_elevation_m": 111.95306009963916,
   "end_elevation_m": 116.3895122291324,
   "start_xy": [
    1060307.3319217155,
    6308153.987013647
   ],
   "end_xy": [
    1060288.1865022492,
    6308148.74201209
   ]
  },
  "max_25m": {
   "gradient_pct": 22.11222878434791,
   "start_distance_m": 453.0,
   "end_distance_m": 478.0,
   "midpoint_distance_m": 465.5,
   "start_elevation_m": 111.08074641371371,
   "end_elevation_m": 116.60880360980069,
   "start_xy": [
    1060311.0099661548,
    6308155.559269702
   ],
   "end_xy": [
    1060287.2004463426,
    6308148.720575793
   ]
  },
  "max_50m": {
   "gradient_pct": 21.33594621262651,
   "start_distance_m": 428.0,
   "end_distance_m": 478.0,
   "midpoint_distance_m": 453.0,
   "start_elevation_m": 105.94083050348743,
   "end_elevation_m": 116.60880360980069,
   "start_xy": [
    1060333.7320205392,
    6308165.964109412
   ],
   "end_xy": [
    1060287.2004463426,
    6308148.720575793
   ]
  },
  "max_100m": {
   "gradient_pct": 19.678911633767655,
   "start_distance_m": 261.0,
   "end_distance_m": 361.0,
   "midpoint_distance_m": 311.0,
   "start_elevation_m": 76.74030483342327,
   "end_elevation_m": 96.41921646719092,
   "start_xy": [
    1060441.285774776,
    6308167.06692832
   ],
   "end_xy": [
    1060349.2250012255,
    6308148.053702184
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -22.788486508281096,
   "start_distance_m": 377.0,
   "end_distance_m": 382.0,
   "midpoint_distance_m": 379.5,
   "start_elevation_m": 102.86797454994215,
   "end_elevation_m": 101.72855022452809,
   "start_xy": [
    1060333.3347807983,
    6308146.8355865935
   ],
   "end_xy": [
    1060329.745351325,
    6308148.957236787
   ]
  },
  "min_10m": {
   "gradient_pct": -8.090094915367558,
   "start_distance_m": 377.0,
   "end_distance_m": 387.0,
   "midpoint_distance_m": 382.0,
   "start_elevation_m": 102.86797454994215,
   "end_elevation_m": 102.05896505840539,
   "start_xy": [
    1060333.3347807983,
    6308146.8355865935
   ],
   "end_xy": [
    1060331.6098325474,
    6308152.987898437
   ]
  },
  "min_20m": {
   "gradient_pct": -1.4951062411476812,
   "start_distance_m": 377.0,
   "end_distance_m": 397.0,
   "midpoint_distance_m": 387.0,
   "start_elevation_m": 102.86797454994215,
   "end_elevation_m": 102.56895330171261,
   "start_xy": [
    1060333.3347807983,
    6308146.8355865935
   ],
   "end_xy": [
    1060340.8140279355,
    6308156.897218999
   ]
  },
  "min_25m": {
   "gradient_pct": -0.17715371443136974,
   "start_distance_m": 377.0,
   "end_distance_m": 402.0,
   "midpoint_distance_m": 389.5,
   "start_elevation_m": 102.86797454994215,
   "end_elevation_m": 102.8236861213343,
   "start_xy": [
    1060333.3347807983,
    6308146.8355865935
   ],
   "end_xy": [
    1060344.8561725956,
    6308159.702800822
   ]
  },
  "min_50m": {
   "gradient_pct": 1.5086738364081071,
   "start_distance_m": 29.0,
   "end_distance_m": 79.0,
   "midpoint_distance_m": 54.0,
   "start_elevation_m": 56.592403635760924,
   "end_elevation_m": 57.34674055396498,
   "start_xy": [
    1060466.015766981,
    6308323.278596961
   ],
   "end_xy": [
    1060490.247940223,
    6308279.868485136
   ]
  },
  "min_100m": {
   "gradient_pct": 5.628566891098053,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 53.44769971827041,
   "end_elevation_m": 59.07626660936846,
   "start_xy": [
    1060489.718,
    6308339.988
   ],
   "end_xy": [
    1060507.0366625653,
    6308267.332879558
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 46.071204809639,
   "start_distance_m": 374.0,
   "end_distance_m": 376.0,
   "midpoint_distance_m": 375.0,
   "start_elevation_m": 101.53379652746013,
   "end_elevation_m": 102.4552206236529,
   "start_xy": [
    1060336.289612668,
    6308146.759205034
   ],
   "end_xy": [
    1060334.3009853398,
    6308146.577809976
   ]
  },
  "max_3m": {
   "gradient_pct": 47.246953896353716,
   "start_distance_m": 373.0,
   "end_distance_m": 376.0,
   "midpoint_distance_m": 374.5,
   "start_elevation_m": 101.0378120067623,
   "end_elevation_m": 102.4552206236529,
   "start_xy": [
    1060337.2846425571,
    6308146.858781738
   ],
   "end_xy": [
    1060334.3009853398,
    6308146.577809976
   ]
  }
 },
 "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": 0.012,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.036,
   "windows_resited": [
    10.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 10.0,
     "start_m": 590.0,
     "end_m": 600.0,
     "raw_pct": 23.37,
     "reason": "hump"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.149,
   "obstruction_max_height_m": 17.86,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    362.0,
    368.0
   ],
   [
    588.0,
    602.0
   ]
  ],
  "review": [
   "short_window_divergence"
  ],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "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_E1060-N6308_0m5.tif"
  ],
  "calculated_at": "2026-09-17T02:17:59+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-alps4.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-alps4",
  "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": [
   "E1060-N6308"
  ],
  "elevation_blocks": [
   "21LHD8SP@2025-06-20"
  ],
  "ign_dalles": [
   "LHD_FXX_1060_6309_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD8SP"
  ],
  "ign_editions": [
   "2025-06-20"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1060_6309_MNT_O_0M50_LAMB93_IGN69": "2025-06-20"
  },
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "carriageway": {
   "stations": 31,
   "stations_resolved": 31,
   "width_median_m": 4.25,
   "width_p10_m": 2.75,
   "width_min_m": 2.25,
   "width_max_m": 12.0,
   "bounded_share": 0.645,
   "unbounded_share": 0.355,
   "confidence_median": 0.583,
   "width_median_bounded_m": 3.75,
   "window_m": [
    453.0,
    478.0
   ],
   "width_at_max25_m": 3.75,
   "window_stations": 7,
   "single_track": true,
   "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": 3.0,
    "width_p10_m": 1.0,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.839,
    "unbounded_share": 0.161,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.25,
    "window_m": [
     453.0,
     478.0
    ],
    "width_at_max25_m": 1.0,
    "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": "Menton",
  "county": "Alpes-Maritimes",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}