{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (43.7177, 7.0528)",
 "slug": "discovered-lane-43-7177-7-0528",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 27.714481722202322,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 377.0,
   "end_distance_m": 379.0,
   "start_elevation_m": 481.4102395688669,
   "end_elevation_m": 481.964529203311,
   "min_gradient_pct": 1.5324142509882677
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.224747068377535,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 377.0,
   "end_distance_m": 380.0,
   "start_elevation_m": 481.4102395688669,
   "end_elevation_m": 482.22698198091825,
   "min_gradient_pct": 1.439773842308038
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.781832371129894,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 373.0,
   "end_distance_m": 378.0,
   "start_elevation_m": 480.34643447049575,
   "end_elevation_m": 481.68552608905225,
   "min_gradient_pct": 1.5963013994451103
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 26.028941077343575,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 373.0,
   "end_distance_m": 383.0,
   "start_elevation_m": 480.34643447049575,
   "end_elevation_m": 482.9493285782301,
   "min_gradient_pct": 4.2943263076074345
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 25.471423664791075,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 362.0,
   "end_distance_m": 382.0,
   "start_elevation_m": 477.62147021935266,
   "end_elevation_m": 482.7157549523109,
   "min_gradient_pct": 7.937475961795997
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 25.112632444279598,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 358.0,
   "end_distance_m": 383.0,
   "start_elevation_m": 476.6711704671602,
   "end_elevation_m": 482.9493285782301,
   "min_gradient_pct": 8.276044240217288
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 23.422042677076888,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 357.0,
   "end_distance_m": 407.0,
   "start_elevation_m": 476.44805815446165,
   "end_elevation_m": 488.1590794930001,
   "min_gradient_pct": 9.59504464336635
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.90828954242545,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 313.0,
   "end_distance_m": 413.0,
   "start_elevation_m": 468.40444036192605,
   "end_elevation_m": 489.3127299043515,
   "min_gradient_pct": 12.457439173674857
  }
 ],
 "shape": {
  "ascent_concentration": 0.325,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 350.0,
  "shape_class": "sustained"
 },
 "length_m": 430.3999999997918,
 "start_elevation_m": 422.1488539768201,
 "end_elevation_m": 490.9325089400993,
 "endpoint_gain_m": 68.78365496327922,
 "overall_gradient_pct": 15.98133247288859,
 "accumulated_ascent_m": 68.78835243483758,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.781832371129894,
   "start_distance_m": 373.0,
   "end_distance_m": 378.0,
   "midpoint_distance_m": 375.5,
   "start_elevation_m": 480.34643447049575,
   "end_elevation_m": 481.68552608905225,
   "start_xy": [
    1026451.7212119107,
    6299266.2925141
   ],
   "end_xy": [
    1026446.917905417,
    6299267.681127339
   ]
  },
  "max_10m": {
   "gradient_pct": 26.028941077343575,
   "start_distance_m": 373.0,
   "end_distance_m": 383.0,
   "midpoint_distance_m": 378.0,
   "start_elevation_m": 480.34643447049575,
   "end_elevation_m": 482.9493285782301,
   "start_xy": [
    1026451.7212119107,
    6299266.2925141
   ],
   "end_xy": [
    1026442.2729193646,
    6299269.230408787
   ]
  },
  "max_20m": {
   "gradient_pct": 25.471423664791075,
   "start_distance_m": 362.0,
   "end_distance_m": 382.0,
   "midpoint_distance_m": 372.0,
   "start_elevation_m": 477.62147021935266,
   "end_elevation_m": 482.7157549523109,
   "start_xy": [
    1026462.2884861968,
    6299263.2375649735
   ],
   "end_xy": [
    1026443.0752602222,
    6299268.79201793
   ]
  },
  "max_25m": {
   "gradient_pct": 25.112632444279598,
   "start_distance_m": 358.0,
   "end_distance_m": 383.0,
   "midpoint_distance_m": 370.5,
   "start_elevation_m": 476.6711704671602,
   "end_elevation_m": 482.9493285782301,
   "start_xy": [
    1026466.2174953634,
    6299262.551475105
   ],
   "end_xy": [
    1026442.2729193646,
    6299269.230408787
   ]
  },
  "max_50m": {
   "gradient_pct": 23.422042677076888,
   "start_distance_m": 357.0,
   "end_distance_m": 407.0,
   "midpoint_distance_m": 382.0,
   "start_elevation_m": 476.44805815446165,
   "end_elevation_m": 488.1590794930001,
   "start_xy": [
    1026467.2103375376,
    6299262.432041369
   ],
   "end_xy": [
    1026438.6976804346,
    6299292.859077369
   ]
  },
  "max_100m": {
   "gradient_pct": 20.90828954242545,
   "start_distance_m": 313.0,
   "end_distance_m": 413.0,
   "midpoint_distance_m": 363.0,
   "start_elevation_m": 468.40444036192605,
   "end_elevation_m": 489.3127299043515,
   "start_xy": [
    1026499.3479877391,
    6299288.755086141
   ],
   "end_xy": [
    1026438.148133654,
    6299298.8338575605
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 1.5963013994451103,
   "start_distance_m": 417.0,
   "end_distance_m": 422.0,
   "midpoint_distance_m": 419.5,
   "start_elevation_m": 489.7483115382792,
   "end_elevation_m": 489.82812660825147,
   "start_xy": [
    1026437.7817691336,
    6299302.817044355
   ],
   "end_xy": [
    1026437.3232397316,
    6299307.795889166
   ]
  },
  "min_10m": {
   "gradient_pct": 4.2943263076074345,
   "start_distance_m": 416.0,
   "end_distance_m": 426.0,
   "midpoint_distance_m": 421.0,
   "start_elevation_m": 489.6839915588856,
   "end_elevation_m": 490.11342418964637,
   "start_xy": [
    1026437.8733602636,
    6299301.821247657
   ],
   "end_xy": [
    1026435.8298876773,
    6299311.506670706
   ]
  },
  "min_20m": {
   "gradient_pct": 7.937475961795997,
   "start_distance_m": 56.0,
   "end_distance_m": 76.0,
   "midpoint_distance_m": 66.0,
   "start_elevation_m": 428.39388710815837,
   "end_elevation_m": 429.98138230051757,
   "start_xy": [
    1026622.3764655836,
    6299370.086412064
   ],
   "end_xy": [
    1026617.380051561,
    6299351.401306829
   ]
  },
  "min_25m": {
   "gradient_pct": 8.276044240217288,
   "start_distance_m": 51.0,
   "end_distance_m": 76.0,
   "midpoint_distance_m": 63.5,
   "start_elevation_m": 427.91237124046324,
   "end_elevation_m": 429.98138230051757,
   "start_xy": [
    1026623.2076098869,
    6299375.016848063
   ],
   "end_xy": [
    1026617.380051561,
    6299351.401306829
   ]
  },
  "min_50m": {
   "gradient_pct": 9.59504464336635,
   "start_distance_m": 26.0,
   "end_distance_m": 76.0,
   "midpoint_distance_m": 51.0,
   "start_elevation_m": 425.1838599788344,
   "end_elevation_m": 429.98138230051757,
   "start_xy": [
    1026626.7509075282,
    6299399.737747437
   ],
   "end_xy": [
    1026617.380051561,
    6299351.401306829
   ]
  },
  "min_100m": {
   "gradient_pct": 12.457439173674857,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 422.1488539768201,
   "end_elevation_m": 434.60629315049493,
   "start_xy": [
    1026628.858,
    6299425.573
   ],
   "end_xy": [
    1026599.2910627406,
    6299335.748846684
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 27.714481722202322,
   "start_distance_m": 377.0,
   "end_distance_m": 379.0,
   "midpoint_distance_m": 378.0,
   "start_elevation_m": 481.4102395688669,
   "end_elevation_m": 481.964529203311,
   "start_xy": [
    1026447.8785667159,
    6299267.403404691
   ],
   "end_xy": [
    1026445.9572441183,
    6299267.958849986
   ]
  },
  "max_3m": {
   "gradient_pct": 27.224747068377535,
   "start_distance_m": 377.0,
   "end_distance_m": 380.0,
   "midpoint_distance_m": 378.5,
   "start_elevation_m": 481.4102395688669,
   "end_elevation_m": 482.22698198091825,
   "start_xy": [
    1026447.8785667159,
    6299267.403404691
   ],
   "end_xy": [
    1026444.9965828196,
    6299268.236572634
   ]
  }
 },
 "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": 0.086,
   "obstruction_max_height_m": 10.0,
   "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_E1026-N6299_0m5.tif"
  ],
  "calculated_at": "2026-09-17T02:56:04+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": [
   "E1026-N6299"
  ],
  "elevation_blocks": [
   "21LHD8RP@2025-03-06"
  ],
  "ign_dalles": [
   "LHD_FXX_1026_6300_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD8RP"
  ],
  "ign_editions": [
   "2025-03-06"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1026_6300_MNT_O_0M50_LAMB93_IGN69": "2025-03-06"
  },
  "route_cut_m": 430.4,
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "carriageway": {
   "stations": 24,
   "stations_resolved": 24,
   "width_median_m": 4.5,
   "width_p10_m": 3.58,
   "width_min_m": 3.0,
   "width_max_m": 10.5,
   "bounded_share": 0.625,
   "unbounded_share": 0.375,
   "confidence_median": 0.543,
   "width_median_bounded_m": 4.5,
   "window_m": [
    358.0,
    383.0
   ],
   "width_at_max25_m": 4.5,
   "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": 24,
    "stations_resolved": 24,
    "width_median_m": 6.0,
    "width_p10_m": 2.45,
    "width_min_m": 1.25,
    "width_max_m": 10.25,
    "bounded_share": 0.875,
    "unbounded_share": 0.125,
    "confidence_median": 1.0,
    "width_median_bounded_m": 5.75,
    "window_m": [
     358.0,
     383.0
    ],
    "width_at_max25_m": 6.5,
    "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": "Tourrettes-sur-Loup",
  "county": "Alpes-Maritimes",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}