{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (43.2112, 5.5983)",
 "slug": "discovered-lane-43-2112-5-5983",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 21.379409716189457,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 196.0,
   "end_distance_m": 198.0,
   "start_elevation_m": 165.70223514156524,
   "end_elevation_m": 166.12982333588903,
   "min_gradient_pct": -44.343559556531886,
   "suppressed_max_gradient_pct": 66.22246766003457,
   "suppressed_location_m": [
    221.0,
    223.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.049344810547648,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 196.0,
   "end_distance_m": 199.0,
   "start_elevation_m": 165.70223514156524,
   "end_elevation_m": 166.33371548588167,
   "min_gradient_pct": -36.86476085986404,
   "suppressed_max_gradient_pct": 58.90945370181745,
   "suppressed_location_m": [
    220.0,
    223.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 20.508404551169406,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 194.0,
   "end_distance_m": 199.0,
   "start_elevation_m": 165.3082952583232,
   "end_elevation_m": 166.33371548588167,
   "min_gradient_pct": -21.719067338206628,
   "suppressed_max_gradient_pct": 44.98829386208513,
   "suppressed_location_m": [
    219.0,
    224.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.23907064615088,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 190.0,
   "end_distance_m": 200.0,
   "start_elevation_m": 164.50732747126196,
   "end_elevation_m": 166.53123453587705,
   "min_gradient_pct": -7.339939031584777,
   "suppressed_max_gradient_pct": 30.424042872726886,
   "suppressed_location_m": [
    214.0,
    224.0
   ],
   "suppressed_min_gradient_pct": -7.667200196524959,
   "suppressed_min_location_m": [
    225.0,
    235.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.146052459620876,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 180.0,
   "end_distance_m": 200.0,
   "start_elevation_m": 162.50202404395287,
   "end_elevation_m": 166.53123453587705,
   "min_gradient_pct": -1.1520276429391174,
   "suppressed_max_gradient_pct": 24.62780471376675,
   "suppressed_location_m": [
    204.0,
    224.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.07635046698681,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 175.0,
   "end_distance_m": 200.0,
   "start_elevation_m": 161.51214691913034,
   "end_elevation_m": 166.53123453587705,
   "min_gradient_pct": 8.987194035576294,
   "suppressed_max_gradient_pct": 23.422185477370476,
   "suppressed_location_m": [
    199.0,
    224.0
   ],
   "suppressed_min_gradient_pct": 3.175117173915851,
   "suppressed_min_location_m": [
    222.0,
    247.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.845473020889244,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 160.0,
   "end_distance_m": 210.0,
   "start_elevation_m": 158.51480360590244,
   "end_elevation_m": 168.43754011634707,
   "min_gradient_pct": 11.467868508710296,
   "suppressed_max_gradient_pct": 21.733567206266343,
   "suppressed_location_m": [
    174.0,
    224.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.98755083998094,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 112.0,
   "end_distance_m": 212.0,
   "start_elevation_m": 149.81696557423058,
   "end_elevation_m": 168.80451641421152,
   "min_gradient_pct": 13.887306902731325,
   "suppressed_max_gradient_pct": 20.218669888754533,
   "suppressed_location_m": [
    124.0,
    224.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.336,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 222.0,
  "shape_class": "sustained"
 },
 "length_m": 247.97771930811027,
 "start_elevation_m": 133.7621109311541,
 "end_elevation_m": 172.16686060546783,
 "endpoint_gain_m": 38.404749674313734,
 "overall_gradient_pct": 15.487177550252468,
 "accumulated_ascent_m": 39.5143556531869,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 20.508404551169406,
   "start_distance_m": 194.0,
   "end_distance_m": 199.0,
   "midpoint_distance_m": 196.5,
   "start_elevation_m": 165.3082952583232,
   "end_elevation_m": 166.33371548588167,
   "start_xy": [
    911204.3582181259,
    6238160.523739489
   ],
   "end_xy": [
    911199.6050419508,
    6238162.07529234
   ]
  },
  "max_10m": {
   "gradient_pct": 20.23907064615088,
   "start_distance_m": 190.0,
   "end_distance_m": 200.0,
   "midpoint_distance_m": 195.0,
   "start_elevation_m": 164.50732747126196,
   "end_elevation_m": 166.53123453587705,
   "start_xy": [
    911208.1607590659,
    6238159.282497209
   ],
   "end_xy": [
    911198.6486271869,
    6238162.363529956
   ]
  },
  "max_20m": {
   "gradient_pct": 20.146052459620876,
   "start_distance_m": 180.0,
   "end_distance_m": 200.0,
   "midpoint_distance_m": 190.0,
   "start_elevation_m": 162.50202404395287,
   "end_elevation_m": 166.53123453587705,
   "start_xy": [
    911217.572161365,
    6238155.90695533
   ],
   "end_xy": [
    911198.6486271869,
    6238162.363529956
   ]
  },
  "max_25m": {
   "gradient_pct": 20.07635046698681,
   "start_distance_m": 175.0,
   "end_distance_m": 200.0,
   "midpoint_distance_m": 187.5,
   "start_elevation_m": 161.51214691913034,
   "end_elevation_m": 166.53123453587705,
   "start_xy": [
    911222.2600537202,
    6238154.168086369
   ],
   "end_xy": [
    911198.6486271869,
    6238162.363529956
   ]
  },
  "max_50m": {
   "gradient_pct": 19.845473020889244,
   "start_distance_m": 160.0,
   "end_distance_m": 210.0,
   "midpoint_distance_m": 185.0,
   "start_elevation_m": 158.51480360590244,
   "end_elevation_m": 168.43754011634707,
   "start_xy": [
    911236.2585837133,
    6238148.779942152
   ],
   "end_xy": [
    911188.8124435393,
    6238164.098298944
   ]
  },
  "max_100m": {
   "gradient_pct": 18.98755083998094,
   "start_distance_m": 112.0,
   "end_distance_m": 212.0,
   "midpoint_distance_m": 162.0,
   "start_elevation_m": 149.81696557423058,
   "end_elevation_m": 168.80451641421152,
   "start_xy": [
    911281.582452223,
    6238133.02531272
   ],
   "end_xy": [
    911186.8167791618,
    6238164.229918444
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -21.719067338206628,
   "start_distance_m": 226.0,
   "end_distance_m": 231.0,
   "midpoint_distance_m": 228.5,
   "start_elevation_m": 172.3319141053746,
   "end_elevation_m": 171.24596073846428,
   "start_xy": [
    911172.928935953,
    6238165.754910491
   ],
   "end_xy": [
    911167.9290499941,
    6238165.721140706
   ]
  },
  "min_10m": {
   "gradient_pct": -7.339939031584777,
   "start_distance_m": 226.0,
   "end_distance_m": 236.0,
   "midpoint_distance_m": 231.0,
   "start_elevation_m": 172.3319141053746,
   "end_elevation_m": 171.59792020221613,
   "start_xy": [
    911172.928935953,
    6238165.754910491
   ],
   "end_xy": [
    911162.9436999351,
    6238165.466959879
   ]
  },
  "min_20m": {
   "gradient_pct": -1.1520276429391174,
   "start_distance_m": 226.0,
   "end_distance_m": 246.0,
   "midpoint_distance_m": 236.0,
   "start_elevation_m": 172.3319141053746,
   "end_elevation_m": 172.10150857678678,
   "start_xy": [
    911172.928935953,
    6238165.754910491
   ],
   "end_xy": [
    911153.0042103967,
    6238164.401470567
   ]
  },
  "min_25m": {
   "gradient_pct": 8.987194035576294,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 133.7621109311541,
   "end_elevation_m": 136.00890944004817,
   "start_xy": [
    911389.646,
    6238104.171
   ],
   "end_xy": [
    911366.0489518684,
    6238112.333316659
   ]
  },
  "min_50m": {
   "gradient_pct": 11.467868508710296,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 133.7621109311541,
   "end_elevation_m": 139.49604518550925,
   "start_xy": [
    911389.646,
    6238104.171
   ],
   "end_xy": [
    911341.7469528056,
    6238118.140242703
   ]
  },
  "min_100m": {
   "gradient_pct": 13.887306902731325,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 133.7621109311541,
   "end_elevation_m": 147.64941783388542,
   "start_xy": [
    911389.646,
    6238104.171
   ],
   "end_xy": [
    911293.0980462593,
    6238129.664869158
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 21.379409716189457,
   "start_distance_m": 196.0,
   "end_distance_m": 198.0,
   "midpoint_distance_m": 197.0,
   "start_elevation_m": 165.70223514156524,
   "end_elevation_m": 166.12982333588903,
   "start_xy": [
    911202.4569476559,
    6238161.14436063
   ],
   "end_xy": [
    911200.5556771858,
    6238161.76498177
   ]
  },
  "max_3m": {
   "gradient_pct": 21.049344810547648,
   "start_distance_m": 196.0,
   "end_distance_m": 199.0,
   "midpoint_distance_m": 197.5,
   "start_elevation_m": 165.70223514156524,
   "end_elevation_m": 166.33371548588167,
   "start_xy": [
    911202.4569476559,
    6238161.14436063
   ],
   "end_xy": [
    911199.6050419508,
    6238162.07529234
   ]
  }
 },
 "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": 0.028,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    10.0,
    25.0
   ],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.0,
   "obstruction_max_height_m": 0.0,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    219.0,
    225.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "41205ec4649bb0a4093af76ff34281a5d9a13832",
   "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-pr4",
   "road_pbf": "block-batch-fr-pr4.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:ba95a0bf562c86eb"
  },
  "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_E911-N6238_0m5@21LHD7PQ-2025-03-14.tif"
  ],
  "calculated_at": "2026-09-25T09:31:36+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-pr4.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-pr4",
  "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": [
   "E911-N6238"
  ],
  "elevation_blocks": [
   "21LHD7PQ@2025-03-14"
  ],
  "ign_dalles": [
   "LHD_FXX_0911_6239_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD7PQ"
  ],
  "ign_editions": [
   "2025-03-14"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0911_6239_MNT_O_0M50_LAMB93_IGN69": "2025-03-14"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 3,
  "carriageway": {
   "stations": 14,
   "stations_resolved": 14,
   "width_median_m": 9.25,
   "width_p10_m": 7.33,
   "width_min_m": 2.25,
   "width_max_m": 11.25,
   "bounded_share": 0.0,
   "unbounded_share": 1.0,
   "confidence_median": 0.0,
   "window_m": [
    175.0,
    200.0
   ],
   "width_at_max25_m": 9.25,
   "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": 14,
    "stations_resolved": 14,
    "width_median_m": 12.0,
    "width_p10_m": 9.38,
    "width_min_m": 4.5,
    "width_max_m": 12.0,
    "bounded_share": 0.071,
    "unbounded_share": 0.929,
    "confidence_median": 0.0,
    "width_median_bounded_m": 4.5,
    "window_m": [
     175.0,
     200.0
    ],
    "width_at_max25_m": 12.0,
    "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": "La Ciotat",
  "county": "Bouches-du-Rh\u00f4ne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}