{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (43.7236, 7.1702)",
 "slug": "discovered-lane-43-7236-7-1702",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 28.71411505999788,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 150.0,
   "end_distance_m": 152.0,
   "start_elevation_m": 257.44663397947704,
   "end_elevation_m": 258.020916280677,
   "min_gradient_pct": -2.0409541870435532
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 28.09003936281253,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 148.0,
   "end_distance_m": 151.0,
   "start_elevation_m": 256.8842765182998,
   "end_elevation_m": 257.7269776991842,
   "min_gradient_pct": -1.6868912047016238
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 27.944792548468058,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 148.0,
   "end_distance_m": 153.0,
   "start_elevation_m": 256.8842765182998,
   "end_elevation_m": 258.28151614572323,
   "min_gradient_pct": -0.10669302745782261
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 27.130117632198676,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 165.0,
   "end_distance_m": 175.0,
   "start_elevation_m": 261.3540338600239,
   "end_elevation_m": 264.06704562324376,
   "min_gradient_pct": 3.5219601384278576
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 26.510791755806906,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 156.0,
   "end_distance_m": 176.0,
   "start_elevation_m": 259.0208352594963,
   "end_elevation_m": 264.3229936106577,
   "min_gradient_pct": 4.0827308559090625
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 26.579944430392743,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 147.0,
   "end_distance_m": 172.0,
   "start_elevation_m": 256.6246764216626,
   "end_elevation_m": 263.2696625292608,
   "min_gradient_pct": 4.301317131434644
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 25.044448586481394,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 136.0,
   "end_distance_m": 186.0,
   "start_elevation_m": 254.08261728137035,
   "end_elevation_m": 266.60484157461104,
   "min_gradient_pct": 6.592465099102299
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.72623560836797,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 100.0,
   "end_distance_m": 200.0,
   "start_elevation_m": 247.95928191738528,
   "end_elevation_m": 268.68551752575326,
   "min_gradient_pct": 9.226257639166079
  }
 ],
 "shape": {
  "ascent_concentration": 0.407,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 138.0,
  "shape_class": "sustained"
 },
 "length_m": 237.63310939038774,
 "start_elevation_m": 237.54807114346346,
 "end_elevation_m": 272.72394671386587,
 "endpoint_gain_m": 35.17587557040241,
 "overall_gradient_pct": 14.802598703792105,
 "accumulated_ascent_m": 35.25244905364889,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 27.944792548468058,
   "start_distance_m": 148.0,
   "end_distance_m": 153.0,
   "midpoint_distance_m": 150.5,
   "start_elevation_m": 256.8842765182998,
   "end_elevation_m": 258.28151614572323,
   "start_xy": [
    1035927.0088593633,
    6300530.684084667
   ],
   "end_xy": [
    1035923.6236490662,
    6300534.355422042
   ]
  },
  "max_10m": {
   "gradient_pct": 27.130117632198676,
   "start_distance_m": 165.0,
   "end_distance_m": 175.0,
   "midpoint_distance_m": 170.0,
   "start_elevation_m": 261.3540338600239,
   "end_elevation_m": 264.06704562324376,
   "start_xy": [
    1035914.6768770752,
    6300542.3526259875
   ],
   "end_xy": [
    1035907.2212337494,
    6300549.016962608
   ]
  },
  "max_20m": {
   "gradient_pct": 26.510791755806906,
   "start_distance_m": 156.0,
   "end_distance_m": 176.0,
   "midpoint_distance_m": 166.0,
   "start_elevation_m": 259.0208352594963,
   "end_elevation_m": 264.3229936106577,
   "start_xy": [
    1035921.3869560685,
    6300536.354723029
   ],
   "end_xy": [
    1035906.4756694168,
    6300549.6833962705
   ]
  },
  "max_25m": {
   "gradient_pct": 26.579944430392743,
   "start_distance_m": 147.0,
   "end_distance_m": 172.0,
   "midpoint_distance_m": 159.5,
   "start_elevation_m": 256.6246764216626,
   "end_elevation_m": 263.2696625292608,
   "start_xy": [
    1035927.6677305509,
    6300529.931828887
   ],
   "end_xy": [
    1035909.4579267472,
    6300547.017661623
   ]
  },
  "max_50m": {
   "gradient_pct": 25.044448586481394,
   "start_distance_m": 136.0,
   "end_distance_m": 186.0,
   "midpoint_distance_m": 161.0,
   "start_elevation_m": 254.08261728137035,
   "end_elevation_m": 266.60484157461104,
   "start_xy": [
    1035934.9153136138,
    6300521.65701531
   ],
   "end_xy": [
    1035896.7378910867,
    6300551.087665472
   ]
  },
  "max_100m": {
   "gradient_pct": 20.72623560836797,
   "start_distance_m": 100.0,
   "end_distance_m": 200.0,
   "midpoint_distance_m": 150.0,
   "start_elevation_m": 247.95928191738528,
   "end_elevation_m": 268.68551752575326,
   "start_xy": [
    1035935.7181724326,
    6300488.1119930735
   ],
   "end_xy": [
    1035882.9649779702,
    6300551.130622571
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.10669302745782261,
   "start_distance_m": 232.0,
   "end_distance_m": 237.0,
   "midpoint_distance_m": 234.5,
   "start_elevation_m": 272.74966071231745,
   "end_elevation_m": 272.74432606094456,
   "start_xy": [
    1035857.4422641306,
    6300569.742989915
   ],
   "end_xy": [
    1035853.7247221477,
    6300573.086622911
   ]
  },
  "min_10m": {
   "gradient_pct": 3.5219601384278576,
   "start_distance_m": 44.0,
   "end_distance_m": 54.0,
   "midpoint_distance_m": 49.0,
   "start_elevation_m": 243.96781717374571,
   "end_elevation_m": 244.3200131875885,
   "start_xy": [
    1035886.7731862117,
    6300465.744671185
   ],
   "end_xy": [
    1035896.7184389937,
    6300466.789633912
   ]
  },
  "min_20m": {
   "gradient_pct": 4.0827308559090625,
   "start_distance_m": 43.0,
   "end_distance_m": 63.0,
   "midpoint_distance_m": 53.0,
   "start_elevation_m": 243.92618157788922,
   "end_elevation_m": 244.74272774907104,
   "start_xy": [
    1035885.7786609335,
    6300465.640174911
   ],
   "end_xy": [
    1035905.5706252763,
    6300468.398865966
   ]
  },
  "min_25m": {
   "gradient_pct": 4.301317131434644,
   "start_distance_m": 32.0,
   "end_distance_m": 57.0,
   "midpoint_distance_m": 44.5,
   "start_elevation_m": 243.3811359994323,
   "end_elevation_m": 244.45646528229096,
   "start_xy": [
    1035874.8388828734,
    6300464.490715911
   ],
   "end_xy": [
    1035899.6762366684,
    6300467.278070294
   ]
  },
  "min_50m": {
   "gradient_pct": 6.592465099102299,
   "start_distance_m": 24.0,
   "end_distance_m": 74.0,
   "midpoint_distance_m": 49.0,
   "start_elevation_m": 242.629923599002,
   "end_elevation_m": 245.92615614855316,
   "start_xy": [
    1035875.2847914945,
    6300458.1986564305
   ],
   "end_xy": [
    1035915.7630840976,
    6300472.004224805
   ]
  },
  "min_100m": {
   "gradient_pct": 9.226257639166079,
   "start_distance_m": 23.0,
   "end_distance_m": 123.0,
   "midpoint_distance_m": 73.0,
   "start_elevation_m": 242.49106643639226,
   "end_elevation_m": 251.71732407555834,
   "start_xy": [
    1035876.2472553399,
    6300457.927246507
   ],
   "end_xy": [
    1035939.6173209812,
    6300509.738433919
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 28.71411505999788,
   "start_distance_m": 150.0,
   "end_distance_m": 152.0,
   "midpoint_distance_m": 151.0,
   "start_elevation_m": 257.44663397947704,
   "end_elevation_m": 258.020916280677,
   "start_xy": [
    1035925.6911169882,
    6300532.188596226
   ],
   "end_xy": [
    1035924.3692133988,
    6300533.68898838
   ]
  },
  "max_3m": {
   "gradient_pct": 28.09003936281253,
   "start_distance_m": 148.0,
   "end_distance_m": 151.0,
   "midpoint_distance_m": 149.5,
   "start_elevation_m": 256.8842765182998,
   "end_elevation_m": 257.7269776991842,
   "start_xy": [
    1035927.0088593633,
    6300530.684084667
   ],
   "end_xy": [
    1035925.0322458007,
    6300532.940852006
   ]
  }
 },
 "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": 0.243,
   "obstruction_max_height_m": 11.46,
   "flagged_windows_m": []
  },
  "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_E1035-N6300_0m5.tif"
  ],
  "calculated_at": "2026-09-17T02:32:37+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": [
   "E1035-N6300"
  ],
  "elevation_blocks": [
   "22LHD6RQ@2025-03-13"
  ],
  "ign_dalles": [
   "LHD_FXX_1035_6301_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD6RQ"
  ],
  "ign_editions": [
   "2025-03-13"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1035_6301_MNT_O_0M50_LAMB93_IGN69": "2025-03-13"
  },
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "carriageway": {
   "stations": 16,
   "stations_resolved": 16,
   "width_median_m": 4.25,
   "width_p10_m": 2.5,
   "width_min_m": 1.25,
   "width_max_m": 12.0,
   "bounded_share": 0.5,
   "unbounded_share": 0.5,
   "confidence_median": 0.281,
   "width_median_bounded_m": 4.5,
   "window_m": [
    147.0,
    172.0
   ],
   "width_at_max25_m": 5.0,
   "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": 3.88,
    "width_p10_m": 0.88,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.875,
    "unbounded_share": 0.125,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.5,
    "window_m": [
     147.0,
     172.0
    ],
    "width_at_max25_m": 4.0,
    "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
   }
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "La Gaude",
  "county": "Alpes-Maritimes",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}