{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (43.5563, 5.5765)",
 "slug": "discovered-lane-43-5563-5-5765",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 36.44377308737887,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 213.0,
   "end_distance_m": 215.0,
   "start_elevation_m": 407.7562977928704,
   "end_elevation_m": 408.48517325461796,
   "min_gradient_pct": -1.3214481307812775
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 36.0447644074668,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 213.0,
   "end_distance_m": 216.0,
   "start_elevation_m": 407.7562977928704,
   "end_elevation_m": 408.8376407250944,
   "min_gradient_pct": -1.1619751194302808
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 32.40432506374077,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 212.0,
   "end_distance_m": 217.0,
   "start_elevation_m": 407.4522898509574,
   "end_elevation_m": 409.07250610414445,
   "min_gradient_pct": -0.3797548920931604
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 27.454968109926767,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 207.0,
   "end_distance_m": 217.0,
   "start_elevation_m": 406.3270092931518,
   "end_elevation_m": 409.07250610414445,
   "min_gradient_pct": 1.2065366615445328
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 26.251110827728326,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 140.0,
   "end_distance_m": 160.0,
   "start_elevation_m": 392.24874213424283,
   "end_elevation_m": 397.4989642997885,
   "min_gradient_pct": 3.0649771667845016
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 25.86080842594015,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 133.0,
   "end_distance_m": 158.0,
   "start_elevation_m": 390.54298237971943,
   "end_elevation_m": 397.00818448620447,
   "min_gradient_pct": 4.026266653443827
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 24.98785966250159,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 110.0,
   "end_distance_m": 160.0,
   "start_elevation_m": 385.0050344685377,
   "end_elevation_m": 397.4989642997885,
   "min_gradient_pct": 5.4401988381072215
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 22.533098866993267,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 93.0,
   "end_distance_m": 193.0,
   "start_elevation_m": 381.3325268218012,
   "end_elevation_m": 403.86562568879447,
   "min_gradient_pct": 9.382967173150007
  }
 ],
 "shape": {
  "ascent_concentration": 0.369,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 222.0,
  "shape_class": "sustained"
 },
 "length_m": 278.42383931239056,
 "start_elevation_m": 373.31679854198757,
 "end_elevation_m": 419.0566288369605,
 "endpoint_gain_m": 45.73983029497293,
 "overall_gradient_pct": 16.42813000780907,
 "accumulated_ascent_m": 45.77655052126249,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 32.40432506374077,
   "start_distance_m": 212.0,
   "end_distance_m": 217.0,
   "midpoint_distance_m": 214.5,
   "start_elevation_m": 407.4522898509574,
   "end_elevation_m": 409.07250610414445,
   "start_xy": [
    908201.8742135187,
    6276450.329530583
   ],
   "end_xy": [
    908204.7972775734,
    6276454.38609274
   ]
  },
  "max_10m": {
   "gradient_pct": 27.454968109926767,
   "start_distance_m": 207.0,
   "end_distance_m": 217.0,
   "midpoint_distance_m": 212.0,
   "start_elevation_m": 406.3270092931518,
   "end_elevation_m": 409.07250610414445,
   "start_xy": [
    908201.1994436402,
    6276445.477824454
   ],
   "end_xy": [
    908204.7972775734,
    6276454.38609274
   ]
  },
  "max_20m": {
   "gradient_pct": 26.251110827728326,
   "start_distance_m": 140.0,
   "end_distance_m": 160.0,
   "midpoint_distance_m": 150.0,
   "start_elevation_m": 392.24874213424283,
   "end_elevation_m": 397.4989642997885,
   "start_xy": [
    908204.5182238143,
    6276407.930055504
   ],
   "end_xy": [
    908223.0300144384,
    6276415.393842081
   ]
  },
  "max_25m": {
   "gradient_pct": 25.86080842594015,
   "start_distance_m": 133.0,
   "end_distance_m": 158.0,
   "midpoint_distance_m": 145.5,
   "start_elevation_m": 390.54298237971943,
   "end_elevation_m": 397.00818448620447,
   "start_xy": [
    908197.9439559792,
    6276405.526099923
   ],
   "end_xy": [
    908221.2807266105,
    6276414.424310186
   ]
  },
  "max_50m": {
   "gradient_pct": 24.98785966250159,
   "start_distance_m": 110.0,
   "end_distance_m": 160.0,
   "midpoint_distance_m": 135.0,
   "start_elevation_m": 385.0050344685377,
   "end_elevation_m": 397.4989642997885,
   "start_xy": [
    908178.7026558366,
    6276394.738543787
   ],
   "end_xy": [
    908223.0300144384,
    6276415.393842081
   ]
  },
  "max_100m": {
   "gradient_pct": 22.533098866993267,
   "start_distance_m": 93.0,
   "end_distance_m": 193.0,
   "midpoint_distance_m": 143.0,
   "start_elevation_m": 381.3325268218012,
   "end_elevation_m": 403.86562568879447,
   "start_xy": [
    908169.7960334056,
    6276380.2584858835
   ],
   "end_xy": [
    908204.8625814702,
    6276432.626558922
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.3797548920931604,
   "start_distance_m": 3.0,
   "end_distance_m": 8.0,
   "midpoint_distance_m": 5.5,
   "start_elevation_m": 373.38674509841616,
   "end_elevation_m": 373.3677573538115,
   "start_xy": [
    908140.6168754447,
    6276295.564566082
   ],
   "end_xy": [
    908141.7362024859,
    6276300.437665973
   ]
  },
  "min_10m": {
   "gradient_pct": 1.2065366615445328,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 373.31679854198757,
   "end_elevation_m": 373.437452208142,
   "start_xy": [
    908139.944,
    6276292.641
   ],
   "end_xy": [
    908142.1831437689,
    6276302.387087294
   ]
  },
  "min_20m": {
   "gradient_pct": 3.0649771667845016,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 373.31679854198757,
   "end_elevation_m": 373.92979397534447,
   "start_xy": [
    908139.944,
    6276292.641
   ],
   "end_xy": [
    908144.4178501841,
    6276312.134193903
   ]
  },
  "min_25m": {
   "gradient_pct": 4.026266653443827,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 373.31679854198757,
   "end_elevation_m": 374.3233652053485,
   "start_xy": [
    908139.944,
    6276292.641
   ],
   "end_xy": [
    908145.5352033918,
    6276317.007747207
   ]
  },
  "min_50m": {
   "gradient_pct": 5.4401988381072215,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 373.31679854198757,
   "end_elevation_m": 376.0368979610412,
   "start_xy": [
    908139.944,
    6276292.641
   ],
   "end_xy": [
    908152.4019516124,
    6276340.9546045745
   ]
  },
  "min_100m": {
   "gradient_pct": 9.382967173150007,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 373.31679854198757,
   "end_elevation_m": 382.6997657151376,
   "start_xy": [
    908139.944,
    6276292.641
   ],
   "end_xy": [
    908173.4634661713,
    6276386.220862667
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 36.44377308737887,
   "start_distance_m": 213.0,
   "end_distance_m": 215.0,
   "midpoint_distance_m": 214.0,
   "start_elevation_m": 407.7562977928704,
   "end_elevation_m": 408.48517325461796,
   "start_xy": [
    908202.4588263296,
    6276451.140843014
   ],
   "end_xy": [
    908203.6280519515,
    6276452.763467877
   ]
  },
  "max_3m": {
   "gradient_pct": 36.0447644074668,
   "start_distance_m": 213.0,
   "end_distance_m": 216.0,
   "midpoint_distance_m": 214.5,
   "start_elevation_m": 407.7562977928704,
   "end_elevation_m": 408.8376407250944,
   "start_xy": [
    908202.4588263296,
    6276451.140843014
   ],
   "end_xy": [
    908204.2126647624,
    6276453.574780309
   ]
  }
 },
 "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": 0.407,
   "obstruction_max_height_m": 14.57,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_continue_beyond_end"
  ]
 },
 "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_E908-N6276_0m5@21LHD7PQ-2025-03-14.tif"
  ],
  "calculated_at": "2026-09-25T09:28:44+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": [
   "E908-N6276"
  ],
  "elevation_blocks": [
   "21LHD7PQ@2025-03-14"
  ],
  "ign_dalles": [
   "LHD_FXX_0908_6277_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD7PQ"
  ],
  "ign_editions": [
   "2025-03-14"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0908_6277_MNT_O_0M50_LAMB93_IGN69": "2025-03-14"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 18,
   "stations_resolved": 18,
   "width_median_m": 5.0,
   "width_p10_m": 3.75,
   "width_min_m": 3.5,
   "width_max_m": 12.0,
   "bounded_share": 0.556,
   "unbounded_share": 0.444,
   "confidence_median": 0.658,
   "width_median_bounded_m": 5.0,
   "window_m": [
    133.0,
    158.0
   ],
   "width_at_max25_m": 5.25,
   "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": 18,
    "stations_resolved": 18,
    "width_median_m": 3.0,
    "width_p10_m": 0.75,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.944,
    "unbounded_share": 0.056,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.75,
    "window_m": [
     133.0,
     158.0
    ],
    "width_at_max25_m": 3.75,
    "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": "Vauvenargues",
  "county": "Bouches-du-Rh\u00f4ne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}