{
 "ocl_version": "0.1.0",
 "name": "Lane near Devouin",
 "slug": "discovered-lane-43-8935-0-8091",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 33.75495312983219,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 92.0,
   "end_distance_m": 94.0,
   "start_elevation_m": 136.26768121952728,
   "end_elevation_m": 136.94278028212392,
   "min_gradient_pct": -4.298720602075434,
   "suppressed_max_gradient_pct": 135.84718015274007,
   "suppressed_location_m": [
    173.0,
    175.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 29.224258236068106,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 100.0,
   "end_distance_m": 103.0,
   "start_elevation_m": 137.8458623577604,
   "end_elevation_m": 138.72259010484245,
   "min_gradient_pct": -2.598009056230429,
   "suppressed_max_gradient_pct": 120.0057239143509,
   "suppressed_location_m": [
    173.0,
    176.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 27.506158966367593,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 98.0,
   "end_distance_m": 103.0,
   "start_elevation_m": 137.34728215652407,
   "end_elevation_m": 138.72259010484245,
   "min_gradient_pct": -0.926170234596384,
   "suppressed_max_gradient_pct": 107.85305127171,
   "suppressed_location_m": [
    173.0,
    178.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.69582952023569,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 96.0,
   "end_distance_m": 106.0,
   "start_elevation_m": 137.01642652659407,
   "end_elevation_m": 139.28600947861764,
   "min_gradient_pct": -0.02187759981183035,
   "suppressed_max_gradient_pct": 67.56313050182882,
   "suppressed_location_m": [
    173.0,
    183.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.210561091811115,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 86.0,
   "end_distance_m": 106.0,
   "start_elevation_m": 135.04389726025542,
   "end_elevation_m": 139.28600947861764,
   "min_gradient_pct": 0.18994981962720203,
   "suppressed_max_gradient_pct": 44.26857737279278,
   "suppressed_location_m": [
    173.0,
    193.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.761781733766043,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 78.0,
   "end_distance_m": 103.0,
   "start_elevation_m": 133.53214467140094,
   "end_elevation_m": 138.72259010484245,
   "min_gradient_pct": 0.15071796625011302,
   "suppressed_max_gradient_pct": 39.75946322369805,
   "suppressed_location_m": [
    173.0,
    198.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.997023525713814,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 55.0,
   "end_distance_m": 105.0,
   "start_elevation_m": 129.14564739085284,
   "end_elevation_m": 139.14415915370975,
   "min_gradient_pct": 0.3922682485781479,
   "suppressed_max_gradient_pct": 27.329789952506076,
   "suppressed_location_m": [
    153.0,
    203.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.073073358747905,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 30.0,
   "end_distance_m": 130.0,
   "start_elevation_m": 125.02316746177189,
   "end_elevation_m": 143.0962408205198,
   "min_gradient_pct": 14.868111056730825,
   "suppressed_max_gradient_pct": 20.10963956918411,
   "suppressed_location_m": [
    98.0,
    198.0
   ],
   "suppressed_min_gradient_pct": 12.221592166510959,
   "suppressed_min_location_m": [
    166.0,
    266.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.42,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 118.0,
  "shape_class": "sustained"
 },
 "length_m": 266.38125331715423,
 "start_elevation_m": 122.97775130102958,
 "end_elevation_m": 159.18693010925293,
 "endpoint_gain_m": 36.20917880822334,
 "overall_gradient_pct": 13.592990631781658,
 "accumulated_ascent_m": 36.50555267242461,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 27.506158966367593,
   "start_distance_m": 98.0,
   "end_distance_m": 103.0,
   "midpoint_distance_m": 100.5,
   "start_elevation_m": 137.34728215652407,
   "end_elevation_m": 138.72259010484245,
   "start_xy": [
    523979.36504470406,
    6312994.772247128
   ],
   "end_xy": [
    523978.4740500456,
    6312989.852275111
   ]
  },
  "max_10m": {
   "gradient_pct": 22.69582952023569,
   "start_distance_m": 96.0,
   "end_distance_m": 106.0,
   "midpoint_distance_m": 101.0,
   "start_elevation_m": 137.01642652659407,
   "end_elevation_m": 139.28600947861764,
   "start_xy": [
    523979.7220236124,
    6312996.740130532
   ],
   "end_xy": [
    523977.9400337541,
    6312986.900186596
   ]
  },
  "max_20m": {
   "gradient_pct": 21.210561091811115,
   "start_distance_m": 86.0,
   "end_distance_m": 106.0,
   "midpoint_distance_m": 96.0,
   "start_elevation_m": 135.04389726025542,
   "end_elevation_m": 139.28600947861764,
   "start_xy": [
    523981.5030452428,
    6313006.580250106
   ],
   "end_xy": [
    523977.9400337541,
    6312986.900186596
   ]
  },
  "max_25m": {
   "gradient_pct": 20.761781733766043,
   "start_distance_m": 78.0,
   "end_distance_m": 103.0,
   "midpoint_distance_m": 90.5,
   "start_elevation_m": 133.53214467140094,
   "end_elevation_m": 138.72259010484245,
   "start_xy": [
    523982.9280561927,
    6313014.452310638
   ],
   "end_xy": [
    523978.4740500456,
    6312989.852275111
   ]
  },
  "max_50m": {
   "gradient_pct": 19.997023525713814,
   "start_distance_m": 55.0,
   "end_distance_m": 105.0,
   "midpoint_distance_m": 80.0,
   "start_elevation_m": 129.14564739085284,
   "end_elevation_m": 139.14415915370975,
   "start_xy": [
    523987.0260519299,
    6313037.0842870725
   ],
   "end_xy": [
    523978.1180390945,
    6312987.884216118
   ]
  },
  "max_100m": {
   "gradient_pct": 18.073073358747905,
   "start_distance_m": 30.0,
   "end_distance_m": 130.0,
   "midpoint_distance_m": 80.0,
   "start_elevation_m": 125.02316746177189,
   "end_elevation_m": 143.0962408205198,
   "start_xy": [
    523991.55790757155,
    6313061.668588081
   ],
   "end_xy": [
    523973.6650009046,
    6312963.284005001
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.926170234596384,
   "start_distance_m": 208.0,
   "end_distance_m": 213.0,
   "midpoint_distance_m": 210.5,
   "start_elevation_m": 158.85345959842158,
   "end_elevation_m": 158.80715108669176,
   "start_xy": [
    523954.3400136797,
    6312887.77304939
   ],
   "end_xy": [
    523949.4257148119,
    6312888.687548753
   ]
  },
  "min_10m": {
   "gradient_pct": -0.02187759981183035,
   "start_distance_m": 208.0,
   "end_distance_m": 218.0,
   "midpoint_distance_m": 213.0,
   "start_elevation_m": 158.85345959842158,
   "end_elevation_m": 158.8512718384404,
   "start_xy": [
    523954.3400136797,
    6312887.77304939
   ],
   "end_xy": [
    523944.52069810696,
    6312889.657502819
   ]
  },
  "min_20m": {
   "gradient_pct": 0.18994981962720203,
   "start_distance_m": 208.0,
   "end_distance_m": 228.0,
   "midpoint_distance_m": 218.0,
   "start_elevation_m": 158.85345959842158,
   "end_elevation_m": 158.89144956234702,
   "start_xy": [
    523954.3400136797,
    6312887.77304939
   ],
   "end_xy": [
    523934.7103130544,
    6312891.595628204
   ]
  },
  "min_25m": {
   "gradient_pct": 0.15071796625011302,
   "start_distance_m": 208.0,
   "end_distance_m": 233.0,
   "midpoint_distance_m": 220.5,
   "start_elevation_m": 158.85345959842158,
   "end_elevation_m": 158.8911390899841,
   "start_xy": [
    523954.3400136797,
    6312887.77304939
   ],
   "end_xy": [
    523929.80250503495,
    6312892.551234785
   ]
  },
  "min_50m": {
   "gradient_pct": 0.3922682485781479,
   "start_distance_m": 208.0,
   "end_distance_m": 258.0,
   "midpoint_distance_m": 233.0,
   "start_elevation_m": 158.85345959842158,
   "end_elevation_m": 159.04959372271065,
   "start_xy": [
    523954.3400136797,
    6312887.77304939
   ],
   "end_xy": [
    523905.2435054909,
    6312897.2262253035
   ]
  },
  "min_100m": {
   "gradient_pct": 14.868111056730825,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 122.97775130102958,
   "end_elevation_m": 137.8458623577604,
   "start_xy": [
    523998.116,
    6313090.943
   ],
   "end_xy": [
    523979.0090340236,
    6312992.804188085
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 33.75495312983219,
   "start_distance_m": 92.0,
   "end_distance_m": 94.0,
   "midpoint_distance_m": 93.0,
   "start_elevation_m": 136.26768121952728,
   "end_elevation_m": 136.94278028212392,
   "start_xy": [
    523980.4340449734,
    6313000.676248617
   ],
   "end_xy": [
    523980.07803429296,
    6312998.708189574
   ]
  },
  "max_3m": {
   "gradient_pct": 29.224258236068106,
   "start_distance_m": 100.0,
   "end_distance_m": 103.0,
   "midpoint_distance_m": 101.5,
   "start_elevation_m": 137.8458623577604,
   "end_elevation_m": 138.72259010484245,
   "start_xy": [
    523979.0090340236,
    6312992.804188085
   ],
   "end_xy": [
    523978.4740500456,
    6312989.852275111
   ]
  }
 },
 "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": 0.041,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    100.0
   ],
   "minima_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.131,
   "windows_resited": [
    10.0,
    20.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 20.0,
     "start_m": 183.0,
     "end_m": 203.0,
     "raw_pct": 22.0,
     "reason": "mask-edge"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.69,
   "obstruction_max_height_m": 22.73,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    171.0,
    205.0
   ]
  ],
  "review": [],
  "extent": []
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "369ce9a92552a037b013b1e3c37e4aa7213e6d76",
   "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": "remeasure-260929c-fr",
   "road_pbf": "batch-france-chunk002.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": "sha256:483504501e3a1ad5"
  },
  "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_E523-N6312_0m5@21LHD2HP-2026-03-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E523-N6313_0m5@21LHD2HP-2026-03-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E524-N6312_0m5@21LHD2HP-2025-04-08.tif",
   "data/cache/fr/ign-lidarhd_dtm_E524-N6313_0m5@21LHD2HP-2025-04-08.tif"
  ],
  "calculated_at": "2026-09-29T14:49:55+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/remeasure-260929c-head/fr/batch-france-chunk002.pbf",
  "osm_snapshot": "",
  "run_id": "remeasure-260929c-fr",
  "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": [
   "E523-N6312",
   "E523-N6313",
   "E524-N6312",
   "E524-N6313"
  ],
  "elevation_blocks": [
   "21LHD2HP@2025-04-08",
   "21LHD2HP@2026-03-20"
  ],
  "ign_dalles": [
   "LHD_FXX_0523_6313_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0523_6314_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0524_6313_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0524_6314_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD2HP"
  ],
  "ign_editions": [
   "2025-04-08",
   "2026-03-20"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0523_6313_MNT_O_0M50_LAMB93_IGN69": "2026-03-20",
   "LHD_FXX_0523_6314_MNT_O_0M50_LAMB93_IGN69": "2026-03-20",
   "LHD_FXX_0524_6313_MNT_O_0M50_LAMB93_IGN69": "2025-04-08",
   "LHD_FXX_0524_6314_MNT_O_0M50_LAMB93_IGN69": "2025-04-08"
  },
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": 1,
  "structure_own_ways_source": "map-matched to the road network: the entry carried no way list, so the ways the route runs along were found by geometry (ukclimb.batch.own_ways_by_geometry)",
  "prior_doc": {
   "slug": "discovered-lane-43-8935-0-8091",
   "calculated_at": "2026-09-27T04:28:03+00:00",
   "code_git_sha": "16bcc1553fe5",
   "analysis_version": "0.1.0",
   "run_id": "fr-so6",
   "path": "output/remeasure-260929c-head/fr/priors/discovered-lane-43-8935-0-8091/discovered-lane-43-8935-0-8091.json",
   "spans": 2,
   "sources": [
    "excluded_ranges_m",
    "texture"
   ]
  },
  "carriageway": {
   "stations": 17,
   "stations_resolved": 17,
   "width_median_m": 5.5,
   "width_p10_m": 2.25,
   "width_min_m": 1.75,
   "width_max_m": 12.0,
   "bounded_share": 0.118,
   "unbounded_share": 0.882,
   "confidence_median": 0.0,
   "width_median_bounded_m": 2.0,
   "window_m": [
    78.0,
    103.0
   ],
   "width_at_max25_m": 5.5,
   "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": 17,
    "stations_resolved": 17,
    "width_median_m": 2.0,
    "width_p10_m": 1.0,
    "width_min_m": 0.5,
    "width_max_m": 7.25,
    "bounded_share": 0.941,
    "unbounded_share": 0.059,
    "confidence_median": 1.0,
    "width_median_bounded_m": 1.75,
    "window_m": [
     78.0,
     103.0
    ],
    "width_at_max25_m": 1.25,
    "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
   }
  },
  "remeasured": {
   "on": "2026-09-29",
   "why": "block-extract cache sweep: fold the fallers, risers held published (standing rulings)",
   "published_max25_pct": 20.76,
   "max25_pct": 20.76
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Avezan",
  "county": "Gers",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 },
 "review_flags": [
  {
   "kind": "track-like-road",
   "span_m": [
    78.0,
    103.0
   ],
   "status": "pending-human-review",
   "noted": "2026-10-06",
   "figure_adjusted": false
  }
 ]
}