{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (43.7256, 7.1126)",
 "slug": "discovered-lane-43-7256-7-1126",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 30.052158356093628,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 30.0,
   "end_distance_m": 32.0,
   "start_elevation_m": 299.297343934655,
   "end_elevation_m": 299.89838710177685,
   "min_gradient_pct": 2.6208086896730265
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 28.45973153198808,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 30.0,
   "end_distance_m": 33.0,
   "start_elevation_m": 299.297343934655,
   "end_elevation_m": 300.1511358806146,
   "min_gradient_pct": 3.176034891754398
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 28.377774742558586,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 30.0,
   "end_distance_m": 35.0,
   "start_elevation_m": 299.297343934655,
   "end_elevation_m": 300.7162326717829,
   "min_gradient_pct": 4.344112820601822
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 27.135498788183554,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 8.0,
   "end_distance_m": 18.0,
   "start_elevation_m": 293.732586680518,
   "end_elevation_m": 296.44613655933637,
   "min_gradient_pct": 7.697366550070797
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 25.57844062555006,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 22.0,
   "end_distance_m": 42.0,
   "start_elevation_m": 297.3328993787729,
   "end_elevation_m": 302.4485875038829,
   "min_gradient_pct": 10.430461304659957
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 25.809685729828743,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 10.0,
   "end_distance_m": 35.0,
   "start_elevation_m": 294.2638112393257,
   "end_elevation_m": 300.7162326717829,
   "min_gradient_pct": 10.48121579621079
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 24.51666267456585,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 6.0,
   "end_distance_m": 56.0,
   "start_elevation_m": 293.23689024553505,
   "end_elevation_m": 305.495221582818,
   "min_gradient_pct": 11.339756267906637
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 21.35164981992312,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "start_elevation_m": 292.0003275313002,
   "end_elevation_m": 313.3519773512233,
   "min_gradient_pct": 12.309306505537563
  }
 ],
 "shape": {
  "ascent_concentration": 0.36,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 153.0,
  "shape_class": "sustained"
 },
 "length_m": 204.16716027015184,
 "start_elevation_m": 292.0003275313002,
 "end_elevation_m": 326.65007440186145,
 "endpoint_gain_m": 34.64974687056127,
 "overall_gradient_pct": 16.97126355909202,
 "accumulated_ascent_m": 34.64974687056127,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 28.377774742558586,
   "start_distance_m": 30.0,
   "end_distance_m": 35.0,
   "midpoint_distance_m": 32.5,
   "start_elevation_m": 299.297343934655,
   "end_elevation_m": 300.7162326717829,
   "start_xy": [
    1031302.7819112369,
    6300442.920257923
   ],
   "end_xy": [
    1031300.0378132224,
    6300447.09996199
   ]
  },
  "max_10m": {
   "gradient_pct": 27.135498788183554,
   "start_distance_m": 8.0,
   "end_distance_m": 18.0,
   "midpoint_distance_m": 13.0,
   "start_elevation_m": 293.732586680518,
   "end_elevation_m": 296.44613655933637,
   "start_xy": [
    1031314.8559425006,
    6300424.529560029
   ],
   "end_xy": [
    1031309.3677464717,
    6300432.888968162
   ]
  },
  "max_20m": {
   "gradient_pct": 25.57844062555006,
   "start_distance_m": 22.0,
   "end_distance_m": 42.0,
   "midpoint_distance_m": 32.0,
   "start_elevation_m": 297.3328993787729,
   "end_elevation_m": 302.4485875038829,
   "start_xy": [
    1031307.17246806,
    6300436.232731416
   ],
   "end_xy": [
    1031296.1960760021,
    6300452.951547683
   ]
  },
  "max_25m": {
   "gradient_pct": 25.809685729828743,
   "start_distance_m": 10.0,
   "end_distance_m": 35.0,
   "midpoint_distance_m": 22.5,
   "start_elevation_m": 294.2638112393257,
   "end_elevation_m": 300.7162326717829,
   "start_xy": [
    1031313.7583032949,
    6300426.201441655
   ],
   "end_xy": [
    1031300.0378132224,
    6300447.09996199
   ]
  },
  "max_50m": {
   "gradient_pct": 24.51666267456585,
   "start_distance_m": 6.0,
   "end_distance_m": 56.0,
   "midpoint_distance_m": 31.0,
   "start_elevation_m": 293.23689024553505,
   "end_elevation_m": 305.495221582818,
   "start_xy": [
    1031315.9535817065,
    6300422.857678402
   ],
   "end_xy": [
    1031290.7524368218,
    6300465.729058091
   ]
  },
  "max_100m": {
   "gradient_pct": 21.35164981992312,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 292.0003275313002,
   "end_elevation_m": 313.3519773512233,
   "start_xy": [
    1031319.011,
    6300417.697
   ],
   "end_xy": [
    1031265.5626424106,
    6300501.580574191
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 4.344112820601822,
   "start_distance_m": 149.0,
   "end_distance_m": 154.0,
   "midpoint_distance_m": 151.5,
   "start_elevation_m": 319.7514903375176,
   "end_elevation_m": 319.9686959785477,
   "start_xy": [
    1031228.9636715065,
    6300521.319761569
   ],
   "end_xy": [
    1031224.9273068472,
    6300519.037896283
   ]
  },
  "min_10m": {
   "gradient_pct": 7.697366550070797,
   "start_distance_m": 146.0,
   "end_distance_m": 156.0,
   "midpoint_distance_m": 151.0,
   "start_elevation_m": 319.4583017370758,
   "end_elevation_m": 320.22803839208285,
   "start_xy": [
    1031231.4650526304,
    6300522.975989957
   ],
   "end_xy": [
    1031224.0658840472,
    6300520.842875717
   ]
  },
  "min_20m": {
   "gradient_pct": 10.430461304659957,
   "start_distance_m": 162.0,
   "end_distance_m": 182.0,
   "midpoint_distance_m": 172.0,
   "start_elevation_m": 321.09123724560334,
   "end_elevation_m": 323.17732950653533,
   "start_xy": [
    1031221.4816156469,
    6300526.257814021
   ],
   "end_xy": [
    1031207.0582128294,
    6300539.631644617
   ]
  },
  "min_25m": {
   "gradient_pct": 10.48121579621079,
   "start_distance_m": 146.0,
   "end_distance_m": 171.0,
   "midpoint_distance_m": 158.5,
   "start_elevation_m": 319.4583017370758,
   "end_elevation_m": 322.07860568612847,
   "start_xy": [
    1031231.4650526304,
    6300522.975989957
   ],
   "end_xy": [
    1031215.9504519997,
    6300533.156454848
   ]
  },
  "min_50m": {
   "gradient_pct": 11.339756267906637,
   "start_distance_m": 132.0,
   "end_distance_m": 182.0,
   "midpoint_distance_m": 157.0,
   "start_elevation_m": 317.507451372582,
   "end_elevation_m": 323.17732950653533,
   "start_xy": [
    1031243.3773925654,
    6300524.48659431
   ],
   "end_xy": [
    1031207.0582128294,
    6300539.631644617
   ]
  },
  "min_100m": {
   "gradient_pct": 12.309306505537563,
   "start_distance_m": 84.0,
   "end_distance_m": 184.0,
   "midpoint_distance_m": 134.0,
   "start_elevation_m": 311.1464865652976,
   "end_elevation_m": 323.45579307083517,
   "start_xy": [
    1031275.3472222489,
    6300488.921111431
   ],
   "end_xy": [
    1031205.3486849141,
    6300540.561879063
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 30.052158356093628,
   "start_distance_m": 30.0,
   "end_distance_m": 32.0,
   "midpoint_distance_m": 31.0,
   "start_elevation_m": 299.297343934655,
   "end_elevation_m": 299.89838710177685,
   "start_xy": [
    1031302.7819112369,
    6300442.920257923
   ],
   "end_xy": [
    1031301.6842720311,
    6300444.59213955
   ]
  },
  "max_3m": {
   "gradient_pct": 28.45973153198808,
   "start_distance_m": 30.0,
   "end_distance_m": 33.0,
   "midpoint_distance_m": 31.5,
   "start_elevation_m": 299.297343934655,
   "end_elevation_m": 300.1511358806146,
   "start_xy": [
    1031302.7819112369,
    6300442.920257923
   ],
   "end_xy": [
    1031301.1354524283,
    6300445.428080363
   ]
  }
 },
 "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": 0.16,
   "obstruction_max_height_m": 17.33,
   "flagged_windows_m": [
    100
   ]
  },
  "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_E1031-N6300_0m5.tif"
  ],
  "calculated_at": "2026-09-17T02:31:31+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": [
   "E1031-N6300"
  ],
  "elevation_blocks": [
   "21LHD8RP@2025-03-06"
  ],
  "ign_dalles": [
   "LHD_FXX_1031_6301_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD8RP"
  ],
  "ign_editions": [
   "2025-03-06"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1031_6301_MNT_O_0M50_LAMB93_IGN69": "2025-03-06"
  },
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "carriageway": {
   "stations": 14,
   "stations_resolved": 14,
   "width_median_m": 3.75,
   "width_p10_m": 2.58,
   "width_min_m": 2.25,
   "width_max_m": 9.0,
   "bounded_share": 0.286,
   "unbounded_share": 0.714,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.38,
   "window_m": [
    10.0,
    35.0
   ],
   "width_at_max25_m": 2.88,
   "window_stations": 6,
   "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": 14,
    "stations_resolved": 14,
    "width_median_m": 3.75,
    "width_p10_m": 1.5,
    "width_min_m": 0.5,
    "width_max_m": 8.0,
    "bounded_share": 0.786,
    "unbounded_share": 0.214,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.25,
    "window_m": [
     10.0,
     35.0
    ],
    "width_at_max25_m": 3.75,
    "window_stations": 6,
    "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": "Vence",
  "county": "Alpes-Maritimes",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}