{
 "ocl_version": "0.1.0",
 "name": "Lane near Moulin Neuf",
 "slug": "discovered-lane-45-2035-0-6948",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 30.967688867679044,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1226.0,
   "end_distance_m": 1228.0,
   "start_elevation_m": 156.35764948548405,
   "end_elevation_m": 156.97700326283763,
   "min_gradient_pct": -24.394685950599637,
   "suppressed_max_gradient_pct": 41.03823180574295,
   "suppressed_location_m": [
    588.0,
    590.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 25.35754453855361,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1224.0,
   "end_distance_m": 1227.0,
   "start_elevation_m": 156.000709838659,
   "end_elevation_m": 156.7614361748156,
   "min_gradient_pct": -18.428484814488872,
   "suppressed_max_gradient_pct": 38.98206976782556,
   "suppressed_location_m": [
    603.0,
    606.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.186101162178716,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1223.0,
   "end_distance_m": 1228.0,
   "start_elevation_m": 155.7176982047287,
   "end_elevation_m": 156.97700326283763,
   "min_gradient_pct": -15.932979048473612,
   "suppressed_max_gradient_pct": 34.23621146622622,
   "suppressed_location_m": [
    601.0,
    606.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.011571780482313,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1221.0,
   "end_distance_m": 1231.0,
   "start_elevation_m": 155.54954557874322,
   "end_elevation_m": 157.55070275679145,
   "min_gradient_pct": -11.751909080544749,
   "suppressed_max_gradient_pct": 31.152792283920974,
   "suppressed_location_m": [
    597.0,
    607.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 16.13569726030562,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1223.0,
   "end_distance_m": 1243.0,
   "start_elevation_m": 155.7176982047287,
   "end_elevation_m": 158.94483765678982,
   "min_gradient_pct": -9.827189001117915,
   "suppressed_max_gradient_pct": 29.9163192392465,
   "suppressed_location_m": [
    587.0,
    607.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 15.989260192120582,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1223.0,
   "end_distance_m": 1248.0,
   "start_elevation_m": 155.7176982047287,
   "end_elevation_m": 159.71501325275884,
   "min_gradient_pct": -9.26326822382623,
   "suppressed_max_gradient_pct": 26.879628527715226,
   "suppressed_location_m": [
    587.0,
    612.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 12.945363817046427,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1216.0,
   "end_distance_m": 1266.0,
   "start_elevation_m": 155.0623510652843,
   "end_elevation_m": 161.53503297380752,
   "min_gradient_pct": -7.491805100214549,
   "suppressed_max_gradient_pct": 22.658450889258603,
   "suppressed_location_m": [
    587.0,
    637.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 8.01718494307562,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1202.0,
   "end_distance_m": 1302.0,
   "start_elevation_m": 156.28087892041145,
   "end_elevation_m": 164.29806386348707,
   "min_gradient_pct": -1.2830794687637592,
   "suppressed_max_gradient_pct": 15.116399708377102,
   "suppressed_location_m": [
    559.0,
    659.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.363,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 62.0,
  "shape_class": "sustained"
 },
 "length_m": 1302.425390058662,
 "start_elevation_m": 86.24381229492187,
 "end_elevation_m": 164.31952767577872,
 "endpoint_gain_m": 78.07571538085685,
 "overall_gradient_pct": 5.994640151889258,
 "accumulated_ascent_m": 84.77546942025936,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.186101162178716,
   "start_distance_m": 1223.0,
   "end_distance_m": 1228.0,
   "midpoint_distance_m": 1225.5,
   "start_elevation_m": 155.7176982047287,
   "end_elevation_m": 156.97700326283763,
   "start_xy": [
    518909.90893611015,
    6458710.82275787
   ],
   "end_xy": [
    518904.967657493,
    6458711.586801016
   ]
  },
  "max_10m": {
   "gradient_pct": 20.011571780482313,
   "start_distance_m": 1221.0,
   "end_distance_m": 1231.0,
   "midpoint_distance_m": 1226.0,
   "start_elevation_m": 155.54954557874322,
   "end_elevation_m": 157.55070275679145,
   "start_xy": [
    518911.88555190206,
    6458710.517817367
   ],
   "end_xy": [
    518902.1449790668,
    6458712.507713899
   ]
  },
  "max_20m": {
   "gradient_pct": 16.13569726030562,
   "start_distance_m": 1223.0,
   "end_distance_m": 1243.0,
   "midpoint_distance_m": 1233.0,
   "start_elevation_m": 155.7176982047287,
   "end_elevation_m": 158.94483765678982,
   "start_xy": [
    518909.90893611015,
    6458710.82275787
   ],
   "end_xy": [
    518891.62836141884,
    6458718.287049996
   ]
  },
  "max_25m": {
   "gradient_pct": 15.989260192120582,
   "start_distance_m": 1223.0,
   "end_distance_m": 1248.0,
   "midpoint_distance_m": 1235.5,
   "start_elevation_m": 155.7176982047287,
   "end_elevation_m": 159.71501325275884,
   "start_xy": [
    518909.90893611015,
    6458710.82275787
   ],
   "end_xy": [
    518887.2463960122,
    6458720.695030961
   ]
  },
  "max_50m": {
   "gradient_pct": 12.945363817046427,
   "start_distance_m": 1216.0,
   "end_distance_m": 1266.0,
   "midpoint_distance_m": 1241.0,
   "start_elevation_m": 155.0623510652843,
   "end_elevation_m": 161.53503297380752,
   "start_xy": [
    518915.97761057265,
    6458711.307724196
   ],
   "end_xy": [
    518870.97688219073,
    6458728.0893157385
   ]
  },
  "max_100m": {
   "gradient_pct": 8.01718494307562,
   "start_distance_m": 1202.0,
   "end_distance_m": 1302.0,
   "midpoint_distance_m": 1252.0,
   "start_elevation_m": 156.28087892041145,
   "end_elevation_m": 164.29806386348707,
   "start_xy": [
    518918.0514472367,
    6458725.0123757385
   ],
   "end_xy": [
    518835.9507903118,
    6458736.406337552
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -15.932979048473612,
   "start_distance_m": 1202.0,
   "end_distance_m": 1207.0,
   "midpoint_distance_m": 1204.5,
   "start_elevation_m": 156.28087892041145,
   "end_elevation_m": 155.48422996798777,
   "start_xy": [
    518918.0514472367,
    6458725.0123757385
   ],
   "end_xy": [
    518918.1424503215,
    6458720.013204359
   ]
  },
  "min_10m": {
   "gradient_pct": -11.751909080544749,
   "start_distance_m": 1199.0,
   "end_distance_m": 1209.0,
   "midpoint_distance_m": 1204.0,
   "start_elevation_m": 156.4814771008159,
   "end_elevation_m": 155.30628619276143,
   "start_xy": [
    518917.99645631545,
    6458728.011871363
   ],
   "end_xy": [
    518917.87766528537,
    6458718.044917904
   ]
  },
  "min_20m": {
   "gradient_pct": -9.827189001117915,
   "start_distance_m": 1188.0,
   "end_distance_m": 1208.0,
   "midpoint_distance_m": 1198.0,
   "start_elevation_m": 157.33740886335767,
   "end_elevation_m": 155.37197106313408,
   "start_xy": [
    518917.7964530611,
    6458739.01005216
   ],
   "end_xy": [
    518918.10716292914,
    6458719.014176308
   ]
  },
  "min_25m": {
   "gradient_pct": -9.26326822382623,
   "start_distance_m": 1185.0,
   "end_distance_m": 1210.0,
   "midpoint_distance_m": 1197.5,
   "start_elevation_m": 157.58549398885935,
   "end_elevation_m": 155.2696769329028,
   "start_xy": [
    518917.7422615727,
    6458742.0095625715
   ],
   "end_xy": [
    518917.6063876826,
    6458717.082416792
   ]
  },
  "min_50m": {
   "gradient_pct": -7.491805100214549,
   "start_distance_m": 1161.0,
   "end_distance_m": 1211.0,
   "midpoint_distance_m": 1186.0,
   "start_elevation_m": 159.00298859902628,
   "end_elevation_m": 155.257086048919,
   "start_xy": [
    518917.3052612083,
    6458766.005581732
   ],
   "end_xy": [
    518917.33448546653,
    6458716.120091981
   ]
  },
  "min_100m": {
   "gradient_pct": -1.2830794687637592,
   "start_distance_m": 1116.0,
   "end_distance_m": 1216.0,
   "midpoint_distance_m": 1166.0,
   "start_elevation_m": 156.34543053404806,
   "end_elevation_m": 155.0623510652843,
   "start_xy": [
    518930.81274016126,
    6458808.036624359
   ],
   "end_xy": [
    518915.97761057265,
    6458711.307724196
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 30.967688867679044,
   "start_distance_m": 1226.0,
   "end_distance_m": 1228.0,
   "midpoint_distance_m": 1227.0,
   "start_elevation_m": 156.35764948548405,
   "end_elevation_m": 156.97700326283763,
   "start_xy": [
    518906.944250529,
    6458711.281712507
   ],
   "end_xy": [
    518904.967657493,
    6458711.586801016
   ]
  },
  "max_3m": {
   "gradient_pct": 25.35754453855361,
   "start_distance_m": 1224.0,
   "end_distance_m": 1227.0,
   "midpoint_distance_m": 1225.5,
   "start_elevation_m": 156.000709838659,
   "end_elevation_m": 156.7614361748156,
   "start_xy": [
    518908.92071521806,
    6458710.975792076
   ],
   "end_xy": [
    518905.95588157116,
    6458711.43378745
   ]
  }
 },
 "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": {
  "no_bench_suppression": {
   "masked_fraction": 0.024,
   "windows_resited": [
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.046,
   "windows_resited": [
    2.0,
    3.0,
    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": 583.0,
     "end_m": 608.0,
     "raw_pct": 25.82,
     "reason": "mask-edge"
    },
    {
     "window_m": 20.0,
     "start_m": 587.0,
     "end_m": 607.0,
     "raw_pct": 29.92,
     "reason": "mask-edge"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.785,
   "obstruction_max_height_m": 29.52,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    581.0,
    640.0
   ]
  ],
  "review": [],
  "extent": [
   "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-chunk009.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_E518-N6458_0m5@21LHD2HM-2025-06-26.tif",
   "data/cache/fr/ign-lidarhd_dtm_E519-N6458_0m5@21LHD2HM-2025-06-26.tif"
  ],
  "calculated_at": "2026-09-29T15:56:54+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/remeasure-260929c-head/fr/batch-france-chunk009.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": [
   "E518-N6458",
   "E519-N6458"
  ],
  "elevation_blocks": [
   "21LHD2HM@2025-06-26"
  ],
  "ign_dalles": [
   "LHD_FXX_0518_6459_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0519_6459_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD2HM"
  ],
  "ign_editions": [
   "2025-06-26"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0518_6459_MNT_O_0M50_LAMB93_IGN69": "2025-06-26",
   "LHD_FXX_0519_6459_MNT_O_0M50_LAMB93_IGN69": "2025-06-26"
  },
  "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-45-2035-0-6948",
   "calculated_at": "2026-09-27T05:18:48+00:00",
   "code_git_sha": "16bcc1553fe5",
   "analysis_version": "0.1.0",
   "run_id": "fr-so5",
   "path": "output/remeasure-260929c-head/fr/priors/discovered-lane-45-2035-0-6948/discovered-lane-45-2035-0-6948.json",
   "spans": 0,
   "sources": []
  },
  "carriageway": {
   "stations": 59,
   "stations_resolved": 59,
   "width_median_m": 4.25,
   "width_p10_m": 2.7,
   "width_min_m": 1.5,
   "width_max_m": 12.0,
   "bounded_share": 0.22,
   "unbounded_share": 0.78,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.5,
   "window_m": [
    1223.0,
    1248.0
   ],
   "width_at_max25_m": 3.25,
   "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": 59,
    "stations_resolved": 59,
    "width_median_m": 2.25,
    "width_p10_m": 1.0,
    "width_min_m": 0.75,
    "width_max_m": 12.0,
    "bounded_share": 0.881,
    "unbounded_share": 0.119,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.25,
    "window_m": [
     1223.0,
     1248.0
    ],
    "width_at_max25_m": 3.0,
    "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": 26.7,
   "max25_pct": 15.99
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "P\u00e9rigueux",
  "county": "Dordogne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 },
 "review_flags": [
  {
   "kind": "track-like-road",
   "span_m": [
    1223.0,
    1248.0
   ],
   "status": "pending-human-review",
   "noted": "2026-10-06",
   "figure_adjusted": false
  }
 ]
}