{
 "ocl_version": "0.1.0",
 "name": "Lane near Petit Tour",
 "slug": "discovered-lane-44-3891-0-6902",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.6595491888028,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 195.0,
   "end_distance_m": 197.0,
   "start_elevation_m": 92.64888803547109,
   "end_elevation_m": 93.16207901924714,
   "min_gradient_pct": 0.9188491673761234
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 25.394621098290315,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 194.0,
   "end_distance_m": 197.0,
   "start_elevation_m": 92.40024038629844,
   "end_elevation_m": 93.16207901924714,
   "min_gradient_pct": 1.7895352223519012
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.386573069103576,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 192.0,
   "end_distance_m": 197.0,
   "start_elevation_m": 91.94275036579197,
   "end_elevation_m": 93.16207901924714,
   "min_gradient_pct": 1.8497148010629871
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.55178018141413,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 190.0,
   "end_distance_m": 200.0,
   "start_elevation_m": 91.55570907914026,
   "end_elevation_m": 93.71088709728167,
   "min_gradient_pct": 2.16401529008877
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.461279090387876,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 180.0,
   "end_distance_m": 200.0,
   "start_elevation_m": 89.6186312792041,
   "end_elevation_m": 93.71088709728167,
   "min_gradient_pct": 2.511201253207531
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.23045546463112,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 173.0,
   "end_distance_m": 198.0,
   "start_elevation_m": 88.29756586550852,
   "end_elevation_m": 93.3551797316663,
   "min_gradient_pct": 2.7640164481851457
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.90798993232835,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 162.0,
   "end_distance_m": 212.0,
   "start_elevation_m": 86.22601430536099,
   "end_elevation_m": 95.68000927152517,
   "min_gradient_pct": 3.5282947090883567
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.442482340095708,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 160.0,
   "end_distance_m": 260.0,
   "start_elevation_m": 86.01927790569769,
   "end_elevation_m": 101.4617602457934,
   "min_gradient_pct": 4.550623870427941
  }
 ],
 "shape": {
  "ascent_concentration": 0.416,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 92.0,
  "shape_class": "sustained"
 },
 "length_m": 305.4000000000523,
 "start_elevation_m": 77.34477056289225,
 "end_elevation_m": 108.32173141559802,
 "endpoint_gain_m": 30.976960852705773,
 "overall_gradient_pct": 10.143078209790593,
 "accumulated_ascent_m": 30.979644603667623,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.386573069103576,
   "start_distance_m": 192.0,
   "end_distance_m": 197.0,
   "midpoint_distance_m": 194.5,
   "start_elevation_m": 91.94275036579197,
   "end_elevation_m": 93.16207901924714,
   "start_xy": [
    516063.27327437437,
    6368286.953593005
   ],
   "end_xy": [
    516061.1352120179,
    6368282.433782239
   ]
  },
  "max_10m": {
   "gradient_pct": 21.55178018141413,
   "start_distance_m": 190.0,
   "end_distance_m": 200.0,
   "midpoint_distance_m": 195.0,
   "start_elevation_m": 91.55570907914026,
   "end_elevation_m": 93.71088709728167,
   "start_xy": [
    516064.128499317,
    6368288.761517311
   ],
   "end_xy": [
    516059.85237460403,
    6368279.7218957795
   ]
  },
  "max_20m": {
   "gradient_pct": 20.461279090387876,
   "start_distance_m": 180.0,
   "end_distance_m": 200.0,
   "midpoint_distance_m": 190.0,
   "start_elevation_m": 89.6186312792041,
   "end_elevation_m": 93.71088709728167,
   "start_xy": [
    516065.080147895,
    6368298.508427004
   ],
   "end_xy": [
    516059.85237460403,
    6368279.7218957795
   ]
  },
  "max_25m": {
   "gradient_pct": 20.23045546463112,
   "start_distance_m": 173.0,
   "end_distance_m": 198.0,
   "midpoint_distance_m": 185.5,
   "start_elevation_m": 88.29756586550852,
   "end_elevation_m": 93.3551797316663,
   "start_xy": [
    516064.92197951203,
    6368305.506639831
   ],
   "end_xy": [
    516060.70759954664,
    6368281.529820086
   ]
  },
  "max_50m": {
   "gradient_pct": 18.90798993232835,
   "start_distance_m": 162.0,
   "end_distance_m": 212.0,
   "midpoint_distance_m": 187.0,
   "start_elevation_m": 86.22601430536099,
   "end_elevation_m": 95.68000927152517,
   "start_xy": [
    516061.3227899901,
    6368315.757488312
   ],
   "end_xy": [
    516054.5945486833,
    6368268.986634034
   ]
  },
  "max_100m": {
   "gradient_pct": 15.442482340095708,
   "start_distance_m": 160.0,
   "end_distance_m": 260.0,
   "midpoint_distance_m": 210.0,
   "start_elevation_m": 86.01927790569769,
   "end_elevation_m": 101.4617602457934,
   "start_xy": [
    516060.51505679067,
    6368317.58712409
   ],
   "end_xy": [
    516026.8842924811,
    6368236.014254256
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 1.8497148010629871,
   "start_distance_m": 6.0,
   "end_distance_m": 11.0,
   "midpoint_distance_m": 8.5,
   "start_elevation_m": 77.49243452019827,
   "end_elevation_m": 77.58492026025142,
   "start_xy": [
    516138.7524148923,
    6368447.611820211
   ],
   "end_xy": [
    516136.1335939692,
    6368443.35250372
   ]
  },
  "min_10m": {
   "gradient_pct": 2.16401529008877,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 77.34477056289225,
   "end_elevation_m": 77.56117209190113,
   "start_xy": [
    516141.895,
    6368452.723
   ],
   "end_xy": [
    516136.65735815384,
    6368444.204367017
   ]
  },
  "min_20m": {
   "gradient_pct": 2.511201253207531,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 77.34477056289225,
   "end_elevation_m": 77.84701081353376,
   "start_xy": [
    516141.895,
    6368452.723
   ],
   "end_xy": [
    516131.4197163077,
    6368435.685734035
   ]
  },
  "min_25m": {
   "gradient_pct": 2.7640164481851457,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 77.34477056289225,
   "end_elevation_m": 78.03577467493854,
   "start_xy": [
    516141.895,
    6368452.723
   ],
   "end_xy": [
    516128.80089538463,
    6368431.426417544
   ]
  },
  "min_50m": {
   "gradient_pct": 3.5282947090883567,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 77.34477056289225,
   "end_elevation_m": 79.10891791743643,
   "start_xy": [
    516141.895,
    6368452.723
   ],
   "end_xy": [
    516118.8770664001,
    6368408.61507489
   ]
  },
  "min_100m": {
   "gradient_pct": 4.550623870427941,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 77.34477056289225,
   "end_elevation_m": 81.89539443332019,
   "start_xy": [
    516141.895,
    6368452.723
   ],
   "end_xy": [
    516092.0897239795,
    6368367.06786333
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.6595491888028,
   "start_distance_m": 195.0,
   "end_distance_m": 197.0,
   "midpoint_distance_m": 196.0,
   "start_elevation_m": 92.64888803547109,
   "end_elevation_m": 93.16207901924714,
   "start_xy": [
    516061.9904369605,
    6368284.241706545
   ],
   "end_xy": [
    516061.1352120179,
    6368282.433782239
   ]
  },
  "max_3m": {
   "gradient_pct": 25.394621098290315,
   "start_distance_m": 194.0,
   "end_distance_m": 197.0,
   "midpoint_distance_m": 195.5,
   "start_elevation_m": 92.40024038629844,
   "end_elevation_m": 93.16207901924714,
   "start_xy": [
    516062.4180494318,
    6368285.1456686985
   ],
   "end_xy": [
    516061.1352120179,
    6368282.433782239
   ]
  }
 },
 "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": 0.127,
   "obstruction_max_height_m": 14.48,
   "flagged_windows_m": []
  },
  "review": [],
  "extent": [
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "16bcc1553fe58b280e0c4a66a3ab0980530490a6",
   "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-so5",
   "road_pbf": "block-batch-fr-so5.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": "sha256:18f786cf9fa98070"
  },
  "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_E515-N6368_0m5@21LHD2HO-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E516-N6368_0m5@21LHD2HO-2025-02-20.tif"
  ],
  "calculated_at": "2026-09-27T05:39:54+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-so5.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-so5",
  "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": [
   "E515-N6368",
   "E516-N6368"
  ],
  "elevation_blocks": [
   "21LHD2HO@2025-02-20"
  ],
  "ign_dalles": [
   "LHD_FXX_0515_6369_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0516_6369_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD2HO"
  ],
  "ign_editions": [
   "2025-02-20"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0515_6369_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0516_6369_MNT_O_0M50_LAMB93_IGN69": "2025-02-20"
  },
  "route_cut_m": 305.4,
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": "none \u2014 the route carried no way list and no mapped way runs along it; own decks unmasked",
  "carriageway": {
   "stations": 19,
   "stations_resolved": 19,
   "width_median_m": 6.25,
   "width_p10_m": 4.65,
   "width_min_m": 4.0,
   "width_max_m": 11.25,
   "bounded_share": 0.053,
   "unbounded_share": 0.947,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.25,
   "window_m": [
    173.0,
    198.0
   ],
   "width_at_max25_m": 6.25,
   "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": 19,
    "stations_resolved": 19,
    "width_median_m": 7.0,
    "width_p10_m": 1.7,
    "width_min_m": 1.0,
    "width_max_m": 12.0,
    "bounded_share": 0.526,
    "unbounded_share": 0.474,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.25,
    "window_m": [
     173.0,
     198.0
    ],
    "width_at_max25_m": 5.25,
    "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": "Pujols",
  "county": "Lot-et-Garonne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 },
 "review_flags": [
  {
   "kind": "track-like-road",
   "span_m": [
    173.0,
    198.0
   ],
   "status": "pending-human-review",
   "noted": "2026-10-06",
   "figure_adjusted": false
  }
 ]
}