{
 "ocl_version": "0.1.0",
 "name": "Route de la Condamine",
 "slug": "route-de-la-condamine",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 23.639356522437538,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 404.0,
   "end_distance_m": 406.0,
   "start_elevation_m": 635.7817159472556,
   "end_elevation_m": 636.2545030777044,
   "min_gradient_pct": -4.04025852886889
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.57815589855166,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 91.0,
   "end_distance_m": 94.0,
   "start_elevation_m": 596.192140258907,
   "end_elevation_m": 596.8394849358635,
   "min_gradient_pct": -3.6270037345995356
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.75680361217701,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 91.0,
   "end_distance_m": 96.0,
   "start_elevation_m": 596.192140258907,
   "end_elevation_m": 597.2799804395158,
   "min_gradient_pct": -3.1577530780509733
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.07336798783649,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 91.0,
   "end_distance_m": 101.0,
   "start_elevation_m": 596.192140258907,
   "end_elevation_m": 598.2994770576906,
   "min_gradient_pct": -2.8799430871197274
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.47181734679441,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 81.0,
   "end_distance_m": 101.0,
   "start_elevation_m": 594.2051135883318,
   "end_elevation_m": 598.2994770576906,
   "min_gradient_pct": -2.393021878208401
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.265345419125424,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 79.0,
   "end_distance_m": 104.0,
   "start_elevation_m": 593.825799172285,
   "end_elevation_m": 598.8921355270663,
   "min_gradient_pct": -2.2660109649687
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.182142274663192,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 80.0,
   "end_distance_m": 130.0,
   "start_elevation_m": 594.0090938014677,
   "end_elevation_m": 603.6001649387993,
   "min_gradient_pct": -1.5918810362161366
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.516040568485778,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 48.0,
   "end_distance_m": 148.0,
   "start_elevation_m": 589.0004664743632,
   "end_elevation_m": 606.516507042849,
   "min_gradient_pct": 0.22462088487407073
  }
 ],
 "shape": {
  "ascent_concentration": 0.4,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 274.0,
  "shape_class": "sustained"
 },
 "length_m": 1878.7210250992603,
 "start_elevation_m": 582.2986258007822,
 "end_elevation_m": 736.9990342443878,
 "endpoint_gain_m": 154.7004084436055,
 "overall_gradient_pct": 8.234347003990765,
 "accumulated_ascent_m": 155.73518104279617,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.75680361217701,
   "start_distance_m": 91.0,
   "end_distance_m": 96.0,
   "midpoint_distance_m": 93.5,
   "start_elevation_m": 596.192140258907,
   "end_elevation_m": 597.2799804395158,
   "start_xy": [
    912487.6152451271,
    6422675.104131803
   ],
   "end_xy": [
    912486.4622442652,
    6422670.238888848
   ]
  },
  "max_10m": {
   "gradient_pct": 21.07336798783649,
   "start_distance_m": 91.0,
   "end_distance_m": 101.0,
   "midpoint_distance_m": 96.0,
   "start_elevation_m": 596.192140258907,
   "end_elevation_m": 598.2994770576906,
   "start_xy": [
    912487.6152451271,
    6422675.104131803
   ],
   "end_xy": [
    912485.3092434034,
    6422665.373645892
   ]
  },
  "max_20m": {
   "gradient_pct": 20.47181734679441,
   "start_distance_m": 81.0,
   "end_distance_m": 101.0,
   "midpoint_distance_m": 91.0,
   "start_elevation_m": 594.2051135883318,
   "end_elevation_m": 598.2994770576906,
   "start_xy": [
    912492.1198472361,
    6422683.909518277
   ],
   "end_xy": [
    912485.3092434034,
    6422665.373645892
   ]
  },
  "max_25m": {
   "gradient_pct": 20.265345419125424,
   "start_distance_m": 79.0,
   "end_distance_m": 104.0,
   "midpoint_distance_m": 91.5,
   "start_elevation_m": 593.825799172285,
   "end_elevation_m": 598.8921355270663,
   "start_xy": [
    912493.4168892411,
    6422685.4319118
   ],
   "end_xy": [
    912484.6174428862,
    6422662.454500119
   ]
  },
  "max_50m": {
   "gradient_pct": 19.182142274663192,
   "start_distance_m": 80.0,
   "end_distance_m": 130.0,
   "midpoint_distance_m": 105.0,
   "start_elevation_m": 594.0090938014677,
   "end_elevation_m": 603.6001649387993,
   "start_xy": [
    912492.7683682386,
    6422684.670715039
   ],
   "end_xy": [
    912478.6652260047,
    6422637.21833723
   ]
  },
  "max_100m": {
   "gradient_pct": 17.516040568485778,
   "start_distance_m": 48.0,
   "end_distance_m": 148.0,
   "midpoint_distance_m": 98.0,
   "start_elevation_m": 589.0004664743632,
   "end_elevation_m": 606.516507042849,
   "start_xy": [
    912521.035376659,
    6422678.20083086
   ],
   "end_xy": [
    912478.0287627206,
    6422619.229593125
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -3.1577530780509733,
   "start_distance_m": 580.0,
   "end_distance_m": 585.0,
   "midpoint_distance_m": 582.5,
   "start_elevation_m": 653.0280502202086,
   "end_elevation_m": 652.870162566306,
   "start_xy": [
    912261.087644844,
    6422375.7456803685
   ],
   "end_xy": [
    912263.0416445986,
    6422371.143302184
   ]
  },
  "min_10m": {
   "gradient_pct": -2.8799430871197274,
   "start_distance_m": 578.0,
   "end_distance_m": 588.0,
   "midpoint_distance_m": 583.0,
   "start_elevation_m": 653.0835588804382,
   "end_elevation_m": 652.7955645717262,
   "start_xy": [
    912260.3060449421,
    6422377.586631643
   ],
   "end_xy": [
    912264.2140444514,
    6422368.381875273
   ]
  },
  "min_20m": {
   "gradient_pct": -2.393021878208401,
   "start_distance_m": 573.0,
   "end_distance_m": 593.0,
   "midpoint_distance_m": 583.0,
   "start_elevation_m": 653.1678380898829,
   "end_elevation_m": 652.6892337142413,
   "start_xy": [
    912258.3520451874,
    6422382.189009828
   ],
   "end_xy": [
    912266.1680442061,
    6422363.779497088
   ]
  },
  "min_25m": {
   "gradient_pct": -2.2660109649687,
   "start_distance_m": 574.0,
   "end_distance_m": 599.0,
   "midpoint_distance_m": 586.5,
   "start_elevation_m": 653.1595778220899,
   "end_elevation_m": 652.5930750808477,
   "start_xy": [
    912258.7428451383,
    6422381.268534191
   ],
   "end_xy": [
    912268.5128439117,
    6422358.2566432655
   ]
  },
  "min_50m": {
   "gradient_pct": -1.5918810362161366,
   "start_distance_m": 558.0,
   "end_distance_m": 608.0,
   "midpoint_distance_m": 583.0,
   "start_elevation_m": 653.2419732512676,
   "end_elevation_m": 652.4460327331595,
   "start_xy": [
    912252.4900459234,
    6422395.996144383
   ],
   "end_xy": [
    912272.0300434701,
    6422349.972362532
   ]
  },
  "min_100m": {
   "gradient_pct": 0.22462088487407073,
   "start_distance_m": 551.0,
   "end_distance_m": 651.0,
   "midpoint_distance_m": 601.0,
   "start_elevation_m": 653.0725986449684,
   "end_elevation_m": 653.2972195298424,
   "start_xy": [
    912251.0313239909,
    6422402.813274884
   ],
   "end_xy": [
    912288.9390525976,
    6422311.376837308
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 23.639356522437538,
   "start_distance_m": 404.0,
   "end_distance_m": 406.0,
   "midpoint_distance_m": 405.0,
   "start_elevation_m": 635.7817159472556,
   "end_elevation_m": 636.2545030777044,
   "start_xy": [
    912375.1090393339,
    6422470.940817407
   ],
   "end_xy": [
    912373.1462102307,
    6422470.557018095
   ]
  },
  "max_3m": {
   "gradient_pct": 21.57815589855166,
   "start_distance_m": 91.0,
   "end_distance_m": 94.0,
   "midpoint_distance_m": 92.5,
   "start_elevation_m": 596.192140258907,
   "end_elevation_m": 596.8394849358635,
   "start_xy": [
    912487.6152451271,
    6422675.104131803
   ],
   "end_xy": [
    912486.92344461,
    6422672.18498603
   ]
  }
 },
 "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": 0.144,
   "obstruction_max_height_m": 32.12,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "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_E912-N6421_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E912-N6422_0m5.tif"
  ],
  "calculated_at": "2026-09-17T02:38:16+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-alps2.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-alps2",
  "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": [
   "E912-N6421",
   "E912-N6422"
  ],
  "elevation_blocks": [
   "21LHD7PN@2025-02-20"
  ],
  "ign_dalles": [
   "LHD_FXX_0912_6422_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0912_6423_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD7PN"
  ],
  "ign_editions": [
   "2025-02-20"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0912_6422_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0912_6423_MNT_O_0M50_LAMB93_IGN69": "2025-02-20"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 7,
  "carriageway": {
   "stations": 82,
   "stations_resolved": 82,
   "width_median_m": 6.0,
   "width_p10_m": 3.25,
   "width_min_m": 2.0,
   "width_max_m": 12.0,
   "bounded_share": 0.305,
   "unbounded_share": 0.695,
   "confidence_median": 0.0,
   "width_median_bounded_m": 6.0,
   "window_m": [
    79.0,
    104.0
   ],
   "width_at_max25_m": 3.5,
   "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": 82,
    "stations_resolved": 82,
    "width_median_m": 7.0,
    "width_p10_m": 1.25,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.659,
    "unbounded_share": 0.341,
    "confidence_median": 1.0,
    "width_median_bounded_m": 4.38,
    "window_m": [
     79.0,
     104.0
    ],
    "width_at_max25_m": 2.5,
    "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": "Lavars",
  "county": "Is\u00e8re",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}