{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (43.8704, 5.3863)",
 "slug": "discovered-lane-43-8704-5-3863",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 23.286635282528323,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 153.0,
   "end_distance_m": 155.0,
   "start_elevation_m": 310.47577986577505,
   "end_elevation_m": 310.9415125714256,
   "min_gradient_pct": -2.911260344555444
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 23.08898477048918,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 154.0,
   "end_distance_m": 157.0,
   "start_elevation_m": 310.70986814347157,
   "end_elevation_m": 311.40253768658624,
   "min_gradient_pct": -2.5285222345511706
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.6601485063361,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 152.0,
   "end_distance_m": 157.0,
   "start_elevation_m": 310.26953026126944,
   "end_elevation_m": 311.40253768658624,
   "min_gradient_pct": -2.4012388490587
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.56685561248139,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 148.0,
   "end_distance_m": 158.0,
   "start_elevation_m": 309.433294039717,
   "end_elevation_m": 311.58997960096514,
   "min_gradient_pct": -1.9980283150107425
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.360061654589003,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 137.0,
   "end_distance_m": 157.0,
   "start_elevation_m": 307.33052535566844,
   "end_elevation_m": 311.40253768658624,
   "min_gradient_pct": -1.2521172284829163
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.374924573464114,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 132.0,
   "end_distance_m": 157.0,
   "start_elevation_m": 306.3088065432202,
   "end_elevation_m": 311.40253768658624,
   "min_gradient_pct": -1.1503292457182397
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.9369278446311,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 108.0,
   "end_distance_m": 158.0,
   "start_elevation_m": 302.1215156786496,
   "end_elevation_m": 311.58997960096514,
   "min_gradient_pct": -0.6200998369289437
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.119956218530547,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 59.0,
   "end_distance_m": 159.0,
   "start_elevation_m": 294.59538970542167,
   "end_elevation_m": 311.7153459239522,
   "min_gradient_pct": 5.849850502347181
  }
 ],
 "shape": {
  "ascent_concentration": 0.463,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 142.0,
  "shape_class": "stepped"
 },
 "length_m": 230.71301496731672,
 "start_elevation_m": 288.9709611677222,
 "end_elevation_m": 311.7982351220984,
 "endpoint_gain_m": 22.82727395437621,
 "overall_gradient_pct": 9.89422896563073,
 "accumulated_ascent_m": 23.194810773014922,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.6601485063361,
   "start_distance_m": 152.0,
   "end_distance_m": 157.0,
   "midpoint_distance_m": 154.5,
   "start_elevation_m": 310.26953026126944,
   "end_elevation_m": 311.40253768658624,
   "start_xy": [
    891795.7357365714,
    6310771.099589079
   ],
   "end_xy": [
    891796.0313717752,
    6310766.108336748
   ]
  },
  "max_10m": {
   "gradient_pct": 21.56685561248139,
   "start_distance_m": 148.0,
   "end_distance_m": 158.0,
   "midpoint_distance_m": 153.0,
   "start_elevation_m": 309.433294039717,
   "end_elevation_m": 311.58997960096514,
   "start_xy": [
    891796.2682899724,
    6310775.046958236
   ],
   "end_xy": [
    891796.090498816,
    6310765.110086282
   ]
  },
  "max_20m": {
   "gradient_pct": 20.360061654589003,
   "start_distance_m": 137.0,
   "end_distance_m": 157.0,
   "midpoint_distance_m": 147.0,
   "start_elevation_m": 307.33052535566844,
   "end_elevation_m": 311.40253768658624,
   "start_xy": [
    891798.2126507786,
    6310785.8737519
   ],
   "end_xy": [
    891796.0313717752,
    6310766.108336748
   ]
  },
  "max_25m": {
   "gradient_pct": 20.374924573464114,
   "start_distance_m": 132.0,
   "end_distance_m": 157.0,
   "midpoint_distance_m": 144.5,
   "start_elevation_m": 306.3088065432202,
   "end_elevation_m": 311.40253768658624,
   "start_xy": [
    891799.0964511451,
    6310790.795021748
   ],
   "end_xy": [
    891796.0313717752,
    6310766.108336748
   ]
  },
  "max_50m": {
   "gradient_pct": 18.9369278446311,
   "start_distance_m": 108.0,
   "end_distance_m": 158.0,
   "midpoint_distance_m": 133.0,
   "start_elevation_m": 302.1215156786496,
   "end_elevation_m": 311.58997960096514,
   "start_xy": [
    891800.5704667814,
    6310814.684862756
   ],
   "end_xy": [
    891796.090498816,
    6310765.110086282
   ]
  },
  "max_100m": {
   "gradient_pct": 17.119956218530547,
   "start_distance_m": 59.0,
   "end_distance_m": 159.0,
   "midpoint_distance_m": 109.0,
   "start_elevation_m": 294.59538970542167,
   "end_elevation_m": 311.7153459239522,
   "start_xy": [
    891793.404294458,
    6310862.794291453
   ],
   "end_xy": [
    891796.337295636,
    6310764.250972708
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -2.4012388490587,
   "start_distance_m": 169.0,
   "end_distance_m": 174.0,
   "midpoint_distance_m": 171.5,
   "start_elevation_m": 311.8846253784458,
   "end_elevation_m": 311.76456343599284,
   "start_xy": [
    891805.8787814429,
    6310761.505779663
   ],
   "end_xy": [
    891810.8600012545,
    6310761.072825637
   ]
  },
  "min_10m": {
   "gradient_pct": -1.9980283150107425,
   "start_distance_m": 169.0,
   "end_distance_m": 179.0,
   "midpoint_distance_m": 174.0,
   "start_elevation_m": 311.8846253784458,
   "end_elevation_m": 311.6848225469447,
   "start_xy": [
    891805.8787814429,
    6310761.505779663
   ],
   "end_xy": [
    891815.841221066,
    6310760.63987161
   ]
  },
  "min_20m": {
   "gradient_pct": -1.2521172284829163,
   "start_distance_m": 166.0,
   "end_distance_m": 186.0,
   "midpoint_distance_m": 176.0,
   "start_elevation_m": 311.90666894686456,
   "end_elevation_m": 311.656245501168,
   "start_xy": [
    891802.9032039169,
    6310761.824277745
   ],
   "end_xy": [
    891822.8149288022,
    6310760.033735973
   ]
  },
  "min_25m": {
   "gradient_pct": -1.1503292457182397,
   "start_distance_m": 166.0,
   "end_distance_m": 191.0,
   "midpoint_distance_m": 178.5,
   "start_elevation_m": 311.90666894686456,
   "end_elevation_m": 311.619086635435,
   "start_xy": [
    891802.9032039169,
    6310761.824277745
   ],
   "end_xy": [
    891827.7961486137,
    6310759.600781946
   ]
  },
  "min_50m": {
   "gradient_pct": -0.6200998369289437,
   "start_distance_m": 166.0,
   "end_distance_m": 216.0,
   "midpoint_distance_m": 191.0,
   "start_elevation_m": 311.90666894686456,
   "end_elevation_m": 311.5966190284001,
   "start_xy": [
    891802.9032039169,
    6310761.824277745
   ],
   "end_xy": [
    891852.7022476714,
    6310757.436011814
   ]
  },
  "min_100m": {
   "gradient_pct": 5.849850502347181,
   "start_distance_m": 130.0,
   "end_distance_m": 230.0,
   "midpoint_distance_m": 180.0,
   "start_elevation_m": 305.9454922387805,
   "end_elevation_m": 311.7953427411277,
   "start_xy": [
    891799.4499712917,
    6310792.763529687
   ],
   "end_xy": [
    891866.6496631438,
    6310756.2237405395
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 23.286635282528323,
   "start_distance_m": 153.0,
   "end_distance_m": 155.0,
   "midpoint_distance_m": 154.0,
   "start_elevation_m": 310.47577986577505,
   "end_elevation_m": 310.9415125714256,
   "start_xy": [
    891795.7948636122,
    6310770.101338612
   ],
   "end_xy": [
    891795.9131176936,
    6310768.10483768
   ]
  },
  "max_3m": {
   "gradient_pct": 23.08898477048918,
   "start_distance_m": 154.0,
   "end_distance_m": 157.0,
   "midpoint_distance_m": 155.5,
   "start_elevation_m": 310.70986814347157,
   "end_elevation_m": 311.40253768658624,
   "start_xy": [
    891795.853990653,
    6310769.103088146
   ],
   "end_xy": [
    891796.0313717752,
    6310766.108336748
   ]
  }
 },
 "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": 0.155,
   "obstruction_max_height_m": 8.58,
   "flagged_windows_m": []
  },
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "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-pr2",
   "road_pbf": "block-batch-fr-pr2.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_E891-N6310_0m5@21LHD7PP-2025-04-02.tif"
  ],
  "calculated_at": "2026-09-25T09:40:18+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-pr2.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-pr2",
  "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": [
   "E891-N6310"
  ],
  "elevation_blocks": [
   "21LHD7PP@2025-04-02"
  ],
  "ign_dalles": [
   "LHD_FXX_0891_6311_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD7PP"
  ],
  "ign_editions": [
   "2025-04-02"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0891_6311_MNT_O_0M50_LAMB93_IGN69": "2025-04-02"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 16,
   "stations_resolved": 16,
   "width_median_m": 6.5,
   "width_p10_m": 4.75,
   "width_min_m": 4.25,
   "width_max_m": 10.5,
   "bounded_share": 0.062,
   "unbounded_share": 0.938,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.25,
   "window_m": [
    132.0,
    157.0
   ],
   "width_at_max25_m": 6.75,
   "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": 16,
    "stations_resolved": 16,
    "width_median_m": 3.12,
    "width_p10_m": 0.88,
    "width_min_m": 0.5,
    "width_max_m": 9.5,
    "bounded_share": 0.875,
    "unbounded_share": 0.125,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.0,
    "window_m": [
     132.0,
     157.0
    ],
    "width_at_max25_m": 3.5,
    "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": "Apt",
  "county": "Vaucluse",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}