{
 "ocl_version": "0.1.0",
 "name": "Lane near Montfort (44.8438, 1.2503)",
 "slug": "discovered-lane-44-8438-1-2503",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 40.051275030602795,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "no_bench_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 227.0,
   "end_distance_m": 229.0,
   "start_elevation_m": 108.84241291404705,
   "end_elevation_m": 109.6434384146591,
   "min_gradient_pct": -10.101351804250669,
   "suppressed_max_gradient_pct": 136.0380455818536,
   "suppressed_location_m": [
    311.0,
    313.0
   ],
   "suppressed_min_gradient_pct": -109.35231915152173,
   "suppressed_min_location_m": [
    309.0,
    311.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 33.361778066649585,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "no_bench_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 227.0,
   "end_distance_m": 230.0,
   "start_elevation_m": 108.84241291404705,
   "end_elevation_m": 109.84326625604653,
   "min_gradient_pct": -9.361723380624198,
   "suppressed_max_gradient_pct": 102.87916032590043,
   "suppressed_location_m": [
    311.0,
    314.0
   ],
   "suppressed_min_gradient_pct": -64.03012857452286,
   "suppressed_min_location_m": [
    308.0,
    311.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.2766211457577,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "no_bench_excluded_min",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 226.0,
   "end_distance_m": 231.0,
   "start_elevation_m": 108.68075606948689,
   "end_elevation_m": 109.99458712677477,
   "min_gradient_pct": -7.961843158216766,
   "suppressed_max_gradient_pct": 67.84685625557842,
   "suppressed_location_m": [
    311.0,
    316.0
   ],
   "suppressed_min_gradient_pct": -35.45065398355035,
   "suppressed_min_location_m": [
    306.0,
    311.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.8610909190659,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 226.0,
   "end_distance_m": 236.0,
   "start_elevation_m": 108.68075606948689,
   "end_elevation_m": 111.06686516139348,
   "min_gradient_pct": -4.340176461703038,
   "suppressed_max_gradient_pct": 40.44740206528459,
   "suppressed_location_m": [
    299.0,
    309.0
   ],
   "suppressed_min_gradient_pct": -7.84015032099461,
   "suppressed_min_location_m": [
    289.0,
    299.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.045568947538627,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 227.0,
   "end_distance_m": 247.0,
   "start_elevation_m": 108.84241291404705,
   "end_elevation_m": 113.05152670355477,
   "min_gradient_pct": -2.238999056778752,
   "suppressed_max_gradient_pct": 27.801880845386364,
   "suppressed_location_m": [
    350.0,
    370.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.147979591190165,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 227.0,
   "end_distance_m": 252.0,
   "start_elevation_m": 108.84241291404705,
   "end_elevation_m": 113.87940781184459,
   "min_gradient_pct": -1.7826745178896886,
   "suppressed_max_gradient_pct": 26.296977783450075,
   "suppressed_location_m": [
    349.0,
    374.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.38374236673343,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 396.0,
   "end_distance_m": 446.0,
   "start_elevation_m": 138.98463001485703,
   "end_elevation_m": 148.67650119822375,
   "min_gradient_pct": 0.7378936584389635,
   "suppressed_max_gradient_pct": 22.741550508126746,
   "suppressed_location_m": [
    350.0,
    400.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.204129471816259,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 390.0,
   "end_distance_m": 490.0,
   "start_elevation_m": 137.85550883372943,
   "end_elevation_m": 153.0596383055457,
   "min_gradient_pct": 3.2146160627096947,
   "suppressed_max_gradient_pct": 21.058351976522843,
   "suppressed_location_m": [
    311.0,
    411.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.445,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 134.0,
  "shape_class": "sustained"
 },
 "length_m": 491.68108386569367,
 "start_elevation_m": 96.01392599410822,
 "end_elevation_m": 153.13540401308296,
 "endpoint_gain_m": 57.12147801897474,
 "overall_gradient_pct": 11.617587068811844,
 "accumulated_ascent_m": 61.78139747727295,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.2766211457577,
   "start_distance_m": 226.0,
   "end_distance_m": 231.0,
   "midpoint_distance_m": 228.5,
   "start_elevation_m": 108.68075606948689,
   "end_elevation_m": 109.99458712677477,
   "start_xy": [
    561853.8272888967,
    6417645.097591704
   ],
   "end_xy": [
    561849.2999998926,
    6417642.975410546
   ]
  },
  "max_10m": {
   "gradient_pct": 23.8610909190659,
   "start_distance_m": 226.0,
   "end_distance_m": 236.0,
   "midpoint_distance_m": 231.0,
   "start_elevation_m": 108.68075606948689,
   "end_elevation_m": 111.06686516139348,
   "start_xy": [
    561853.8272888967,
    6417645.097591704
   ],
   "end_xy": [
    561844.7730451322,
    6417640.852517811
   ]
  },
  "max_20m": {
   "gradient_pct": 21.045568947538627,
   "start_distance_m": 227.0,
   "end_distance_m": 247.0,
   "midpoint_distance_m": 237.0,
   "start_elevation_m": 108.84241291404705,
   "end_elevation_m": 113.05152670355477,
   "start_xy": [
    561852.9217635022,
    6417644.673299656
   ],
   "end_xy": [
    561834.8131424651,
    6417636.183437069
   ]
  },
  "max_25m": {
   "gradient_pct": 20.147979591190165,
   "start_distance_m": 227.0,
   "end_distance_m": 252.0,
   "midpoint_distance_m": 239.5,
   "start_elevation_m": 108.84241291404705,
   "end_elevation_m": 113.87940781184459,
   "start_xy": [
    561852.9217635022,
    6417644.673299656
   ],
   "end_xy": [
    561830.4646279397,
    6417633.7295956435
   ]
  },
  "max_50m": {
   "gradient_pct": 19.38374236673343,
   "start_distance_m": 396.0,
   "end_distance_m": 446.0,
   "midpoint_distance_m": 421.0,
   "start_elevation_m": 138.98463001485703,
   "end_elevation_m": 148.67650119822375,
   "start_xy": [
    561750.3528485993,
    6417609.086156737
   ],
   "end_xy": [
    561751.9924866139,
    6417658.607164768
   ]
  },
  "max_100m": {
   "gradient_pct": 15.204129471816259,
   "start_distance_m": 390.0,
   "end_distance_m": 490.0,
   "midpoint_distance_m": 440.0,
   "start_elevation_m": 137.85550883372943,
   "end_elevation_m": 153.0596383055457,
   "start_xy": [
    561748.9379035372,
    6417603.2553827735
   ],
   "end_xy": [
    561717.142501384,
    6417643.635243031
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -7.961843158216766,
   "start_distance_m": 26.0,
   "end_distance_m": 31.0,
   "midpoint_distance_m": 28.5,
   "start_elevation_m": 99.14309830009006,
   "end_elevation_m": 98.74500614217922,
   "start_xy": [
    561991.5409768667,
    6417769.59638243
   ],
   "end_xy": [
    561989.2650527357,
    6417765.144397775
   ]
  },
  "min_10m": {
   "gradient_pct": -4.340176461703038,
   "start_distance_m": 26.0,
   "end_distance_m": 36.0,
   "midpoint_distance_m": 31.0,
   "start_elevation_m": 99.14309830009006,
   "end_elevation_m": 98.70908065391976,
   "start_xy": [
    561991.5409768667,
    6417769.59638243
   ],
   "end_xy": [
    561986.9902452545,
    6417760.691842366
   ]
  },
  "min_20m": {
   "gradient_pct": -2.238999056778752,
   "start_distance_m": 149.0,
   "end_distance_m": 169.0,
   "midpoint_distance_m": 159.0,
   "start_elevation_m": 103.41509340487235,
   "end_elevation_m": 102.9672935935166,
   "start_xy": [
    561926.6388179192,
    6417667.6682024775
   ],
   "end_xy": [
    561908.4486027745,
    6417659.354599726
   ]
  },
  "min_25m": {
   "gradient_pct": -1.7826745178896886,
   "start_distance_m": 144.0,
   "end_distance_m": 169.0,
   "midpoint_distance_m": 156.5,
   "start_elevation_m": 103.41296222298902,
   "end_elevation_m": 102.9672935935166,
   "start_xy": [
    561930.6625528169,
    6417670.528996681
   ],
   "end_xy": [
    561908.4486027745,
    6417659.354599726
   ]
  },
  "min_50m": {
   "gradient_pct": 0.7378936584389635,
   "start_distance_m": 26.0,
   "end_distance_m": 76.0,
   "midpoint_distance_m": 51.0,
   "start_elevation_m": 99.14309830009006,
   "end_elevation_m": 99.51204512930954,
   "start_xy": [
    561991.5409768667,
    6417769.59638243
   ],
   "end_xy": [
    561968.7864030355,
    6417725.074150993
   ]
  },
  "min_100m": {
   "gradient_pct": 3.2146160627096947,
   "start_distance_m": 25.0,
   "end_distance_m": 125.0,
   "midpoint_distance_m": 75.0,
   "start_elevation_m": 99.03686030215678,
   "end_elevation_m": 102.25147636486648,
   "start_xy": [
    561992.0825662863,
    6417768.877404555
   ],
   "end_xy": [
    561944.5468130133,
    6417683.499239792
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 40.051275030602795,
   "start_distance_m": 227.0,
   "end_distance_m": 229.0,
   "midpoint_distance_m": 228.0,
   "start_elevation_m": 108.84241291404705,
   "end_elevation_m": 109.6434384146591,
   "start_xy": [
    561852.9217635022,
    6417644.673299656
   ],
   "end_xy": [
    561851.1108816976,
    6417643.8243551
   ]
  },
  "max_3m": {
   "gradient_pct": 33.361778066649585,
   "start_distance_m": 227.0,
   "end_distance_m": 230.0,
   "midpoint_distance_m": 228.5,
   "start_elevation_m": 108.84241291404705,
   "end_elevation_m": 109.84326625604653,
   "start_xy": [
    561852.9217635022,
    6417644.673299656
   ],
   "end_xy": [
    561850.2055253404,
    6417643.39970248
   ]
  }
 },
 "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": 0.045,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "minima_unresolved": []
  },
  "no_bench_suppression": {
   "masked_fraction": 0.085,
   "windows_resited": [],
   "windows_unresolved": [],
   "minima_resited": [
    2.0,
    3.0,
    5.0
   ],
   "minima_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.148,
   "windows_resited": [
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 362.0,
     "end_m": 387.0,
     "raw_pct": 20.69,
     "reason": "mask-edge"
    },
    {
     "window_m": 20.0,
     "start_m": 359.0,
     "end_m": 379.0,
     "raw_pct": 21.73,
     "reason": "mask-edge"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.635,
   "obstruction_max_height_m": 18.61,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    280.0,
    315.0
   ],
   [
    353.0,
    389.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_end"
  ]
 },
 "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-chunk006.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_E561-N6417_0m5@21LHD2IN-2025-03-14.tif",
   "data/cache/fr/ign-lidarhd_dtm_E562-N6417_0m5@21LHD2IN-2025-03-14.tif"
  ],
  "calculated_at": "2026-09-29T15:37:16+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/remeasure-260929c-head/fr/batch-france-chunk006.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": [
   "E561-N6417",
   "E562-N6417"
  ],
  "elevation_blocks": [
   "21LHD2IN@2025-03-14"
  ],
  "ign_dalles": [
   "LHD_FXX_0561_6418_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0562_6418_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD2IN"
  ],
  "ign_editions": [
   "2025-03-14"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0561_6418_MNT_O_0M50_LAMB93_IGN69": "2025-03-14",
   "LHD_FXX_0562_6418_MNT_O_0M50_LAMB93_IGN69": "2025-03-14"
  },
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": 2,
  "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-44-8438-1-2503",
   "calculated_at": "2026-09-27T04:34:48+00:00",
   "code_git_sha": "16bcc1553fe5",
   "analysis_version": "0.1.0",
   "run_id": "fr-so8",
   "path": "output/remeasure-260929c-head/fr/priors/discovered-lane-44-8438-1-2503/discovered-lane-44-8438-1-2503.json",
   "spans": 6,
   "sources": [
    "excluded_ranges_m",
    "texture"
   ]
  },
  "carriageway": {
   "stations": 26,
   "stations_resolved": 26,
   "width_median_m": 4.62,
   "width_p10_m": 2.88,
   "width_min_m": 1.0,
   "width_max_m": 12.0,
   "bounded_share": 0.346,
   "unbounded_share": 0.654,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.75,
   "window_m": [
    227.0,
    252.0
   ],
   "width_at_max25_m": 4.25,
   "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": 26,
    "stations_resolved": 26,
    "width_median_m": 3.12,
    "width_p10_m": 1.12,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.923,
    "unbounded_share": 0.077,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.75,
    "window_m": [
     227.0,
     252.0
    ],
    "width_at_max25_m": 2.75,
    "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
   }
  },
  "remeasured": {
   "on": "2026-09-29",
   "why": "block-extract cache sweep: fold the fallers, risers held published (standing rulings)",
   "published_max25_pct": 20.16,
   "max25_pct": 20.15
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Carsac-Aillac",
  "county": "Dordogne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}