{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (46.1028, 6.6624)",
 "slug": "discovered-lane-46-1028-6-6624",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.308961954988263,
   "diagnostic": true,
   "flags": [
    "no_bench_excluded"
   ],
   "start_distance_m": 1177.0,
   "end_distance_m": 1179.0,
   "start_elevation_m": 945.5086734874945,
   "end_elevation_m": 946.0148527265943,
   "min_gradient_pct": -15.932487648200322,
   "suppressed_max_gradient_pct": 28.789642485645572,
   "suppressed_location_m": [
    804.0,
    806.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 25.220804727871382,
   "diagnostic": true,
   "flags": [
    "no_bench_excluded"
   ],
   "start_distance_m": 1176.0,
   "end_distance_m": 1179.0,
   "start_elevation_m": 945.2582285847582,
   "end_elevation_m": 946.0148527265943,
   "min_gradient_pct": -13.073339751224466,
   "suppressed_max_gradient_pct": 26.408763958841064,
   "suppressed_location_m": [
    829.0,
    832.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.24384810551146,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded"
   ],
   "start_distance_m": 1176.0,
   "end_distance_m": 1181.0,
   "start_elevation_m": 945.2582285847582,
   "end_elevation_m": 946.4704209900337,
   "min_gradient_pct": -12.28142743018907,
   "suppressed_max_gradient_pct": 25.253646729881893,
   "suppressed_location_m": [
    801.0,
    806.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.200806589071362,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded"
   ],
   "start_distance_m": 1172.0,
   "end_distance_m": 1182.0,
   "start_elevation_m": 944.4707786619072,
   "end_elevation_m": 946.6908593208143,
   "min_gradient_pct": -6.8650136147084595,
   "suppressed_max_gradient_pct": 22.248591672448583,
   "suppressed_location_m": [
    796.0,
    806.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.671129627338814,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1162.0,
   "end_distance_m": 1182.0,
   "start_elevation_m": 942.3566333953465,
   "end_elevation_m": 946.6908593208143,
   "min_gradient_pct": -1.9130246138013263
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.925446553834718,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1156.0,
   "end_distance_m": 1181.0,
   "start_elevation_m": 941.2390593515751,
   "end_elevation_m": 946.4704209900337,
   "min_gradient_pct": -0.5469472206073078
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.504904486540454,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1137.0,
   "end_distance_m": 1187.0,
   "start_elevation_m": 937.7980203300094,
   "end_elevation_m": 947.5504725732796,
   "min_gradient_pct": 3.3094878790359417
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.66290395377473,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1087.0,
   "end_distance_m": 1187.0,
   "start_elevation_m": 931.8875686195049,
   "end_elevation_m": 947.5504725732796,
   "min_gradient_pct": 6.199700444684709
  }
 ],
 "shape": {
  "ascent_concentration": 0.282,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 74.0,
  "shape_class": "sustained"
 },
 "length_m": 1187.6901334409708,
 "start_elevation_m": 840.8676223632666,
 "end_elevation_m": 947.6999037659193,
 "endpoint_gain_m": 106.83228140265271,
 "overall_gradient_pct": 8.99496243966755,
 "accumulated_ascent_m": 109.88275467483766,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.24384810551146,
   "start_distance_m": 1176.0,
   "end_distance_m": 1181.0,
   "midpoint_distance_m": 1178.5,
   "start_elevation_m": 945.2582285847582,
   "end_elevation_m": 946.4704209900337,
   "start_xy": [
    982832.9395806493,
    6562471.454860687
   ],
   "end_xy": [
    982836.0428041442,
    6562475.375320346
   ]
  },
  "max_10m": {
   "gradient_pct": 22.200806589071362,
   "start_distance_m": 1172.0,
   "end_distance_m": 1182.0,
   "midpoint_distance_m": 1177.0,
   "start_elevation_m": 944.4707786619072,
   "end_elevation_m": 946.6908593208143,
   "start_xy": [
    982830.4219932988,
    6562468.347317219
   ],
   "end_xy": [
    982836.6634488433,
    6562476.159412278
   ]
  },
  "max_20m": {
   "gradient_pct": 21.671129627338814,
   "start_distance_m": 1162.0,
   "end_distance_m": 1182.0,
   "midpoint_distance_m": 1172.0,
   "start_elevation_m": 942.3566333953465,
   "end_elevation_m": 946.6908593208143,
   "start_xy": [
    982823.9183106201,
    6562460.75112662
   ],
   "end_xy": [
    982836.6634488433,
    6562476.159412278
   ]
  },
  "max_25m": {
   "gradient_pct": 20.925446553834718,
   "start_distance_m": 1156.0,
   "end_distance_m": 1181.0,
   "midpoint_distance_m": 1168.5,
   "start_elevation_m": 941.2390593515751,
   "end_elevation_m": 946.4704209900337,
   "start_xy": [
    982820.0161010129,
    6562456.193412261
   ],
   "end_xy": [
    982836.0428041442,
    6562475.375320346
   ]
  },
  "max_50m": {
   "gradient_pct": 19.504904486540454,
   "start_distance_m": 1137.0,
   "end_distance_m": 1187.0,
   "midpoint_distance_m": 1162.0,
   "start_elevation_m": 937.7980203300094,
   "end_elevation_m": 947.5504725732796,
   "start_xy": [
    982805.4761144134,
    6562444.123716746
   ],
   "end_xy": [
    982839.7666723382,
    6562480.079871938
   ]
  },
  "max_100m": {
   "gradient_pct": 15.66290395377473,
   "start_distance_m": 1087.0,
   "end_distance_m": 1187.0,
   "midpoint_distance_m": 1137.0,
   "start_elevation_m": 931.8875686195049,
   "end_elevation_m": 947.5504725732796,
   "start_xy": [
    982759.3393424477,
    6562428.976104669
   ],
   "end_xy": [
    982839.7666723382,
    6562480.079871938
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -12.28142743018907,
   "start_distance_m": 773.0,
   "end_distance_m": 778.0,
   "midpoint_distance_m": 775.5,
   "start_elevation_m": 904.0791429526925,
   "end_elevation_m": 903.465071581183,
   "start_xy": [
    982564.3546630547,
    6562448.495020563
   ],
   "end_xy": [
    982568.8923479826,
    6562446.395159735
   ]
  },
  "min_10m": {
   "gradient_pct": -6.8650136147084595,
   "start_distance_m": 773.0,
   "end_distance_m": 783.0,
   "midpoint_distance_m": 778.0,
   "start_elevation_m": 904.0791429526925,
   "end_elevation_m": 903.3926415912216,
   "start_xy": [
    982564.3546630547,
    6562448.495020563
   ],
   "end_xy": [
    982573.4300329105,
    6562444.295298907
   ]
  },
  "min_20m": {
   "gradient_pct": -1.9130246138013263,
   "start_distance_m": 769.0,
   "end_distance_m": 789.0,
   "midpoint_distance_m": 779.0,
   "start_elevation_m": 904.0366170382017,
   "end_elevation_m": 903.6540121154414,
   "start_xy": [
    982560.7245151125,
    6562450.174909225
   ],
   "end_xy": [
    982578.8752548241,
    6562441.775465914
   ]
  },
  "min_25m": {
   "gradient_pct": -0.5469472206073078,
   "start_distance_m": 759.0,
   "end_distance_m": 784.0,
   "midpoint_distance_m": 771.5,
   "start_elevation_m": 903.5459526832254,
   "end_elevation_m": 903.4092158780736,
   "start_xy": [
    982551.6491452566,
    6562454.37463088
   ],
   "end_xy": [
    982574.3375698961,
    6562443.8753267415
   ]
  },
  "min_50m": {
   "gradient_pct": 3.3094878790359417,
   "start_distance_m": 741.0,
   "end_distance_m": 791.0,
   "midpoint_distance_m": 766.0,
   "start_elevation_m": 901.9682785627872,
   "end_elevation_m": 903.6230225023052,
   "start_xy": [
    982535.3134795162,
    6562461.934129859
   ],
   "end_xy": [
    982580.6903287951,
    6562440.935521583
   ]
  },
  "min_100m": {
   "gradient_pct": 6.199700444684709,
   "start_distance_m": 691.0,
   "end_distance_m": 791.0,
   "midpoint_distance_m": 741.0,
   "start_elevation_m": 897.4233220576205,
   "end_elevation_m": 903.6230225023052,
   "start_xy": [
    982488.6052301096,
    6562477.465120599
   ],
   "end_xy": [
    982580.6903287951,
    6562440.935521583
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.308961954988263,
   "start_distance_m": 1177.0,
   "end_distance_m": 1179.0,
   "midpoint_distance_m": 1178.0,
   "start_elevation_m": 945.5086734874945,
   "end_elevation_m": 946.0148527265943,
   "start_xy": [
    982833.5602253482,
    6562472.238952619
   ],
   "end_xy": [
    982834.8015147463,
    6562473.807136483
   ]
  },
  "max_3m": {
   "gradient_pct": 25.220804727871382,
   "start_distance_m": 1176.0,
   "end_distance_m": 1179.0,
   "midpoint_distance_m": 1177.5,
   "start_elevation_m": 945.2582285847582,
   "end_elevation_m": 946.0148527265943,
   "start_xy": [
    982832.9395806493,
    6562471.454860687
   ],
   "end_xy": [
    982834.8015147463,
    6562473.807136483
   ]
  }
 },
 "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": 0.068,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.465,
   "obstruction_max_height_m": 29.66,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    760.0,
    840.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "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_E982-N6562_0m5.tif"
  ],
  "calculated_at": "2026-09-17T02:24:26+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-alps4.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-alps4",
  "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": [
   "E982-N6562"
  ],
  "elevation_blocks": [
   "21LHD5QK2@2025-06-13"
  ],
  "ign_dalles": [
   "LHD_FXX_0982_6563_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD5QK2"
  ],
  "ign_editions": [
   "2025-06-13"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0982_6563_MNT_O_0M50_LAMB93_IGN69": "2025-06-13"
  },
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "carriageway": {
   "stations": 54,
   "stations_resolved": 54,
   "width_median_m": 4.75,
   "width_p10_m": 2.25,
   "width_min_m": 1.25,
   "width_max_m": 11.75,
   "bounded_share": 0.407,
   "unbounded_share": 0.593,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.0,
   "window_m": [
    1156.0,
    1181.0
   ],
   "width_at_max25_m": 3.75,
   "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": 54,
    "stations_resolved": 54,
    "width_median_m": 3.62,
    "width_p10_m": 1.0,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.852,
    "unbounded_share": 0.148,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.88,
    "window_m": [
     1156.0,
     1181.0
    ],
    "width_at_max25_m": 7.75,
    "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
   }
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Taninges",
  "county": "Haute-Savoie",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}