{
 "ocl_version": "0.1.0",
 "name": "Route Foresti\u00e8re de Frumezan",
 "slug": "route-forestiere-de-frumezan",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 33.25566001764173,
   "diagnostic": true,
   "flags": [
    "no_bench_excluded"
   ],
   "start_distance_m": 885.0,
   "end_distance_m": 887.0,
   "start_elevation_m": 1348.3465932431488,
   "end_elevation_m": 1349.0117064435017,
   "min_gradient_pct": -17.674548070567653,
   "suppressed_max_gradient_pct": 37.04112332582099,
   "suppressed_location_m": [
    2802.0,
    2804.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.852700849704586,
   "diagnostic": true,
   "flags": [
    "no_bench_excluded"
   ],
   "start_distance_m": 884.0,
   "end_distance_m": 887.0,
   "start_elevation_m": 1348.1761254180105,
   "end_elevation_m": 1349.0117064435017,
   "min_gradient_pct": -7.203344726970802,
   "suppressed_max_gradient_pct": 34.778423168593996,
   "suppressed_location_m": [
    2800.0,
    2803.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.204959335909734,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded"
   ],
   "start_distance_m": 2879.0,
   "end_distance_m": 2884.0,
   "start_elevation_m": 1537.7106371956008,
   "end_elevation_m": 1538.7708851623963,
   "min_gradient_pct": -4.173457634155966,
   "suppressed_max_gradient_pct": 33.2057023986863,
   "suppressed_location_m": [
    2799.0,
    2804.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 18.585705302530187,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 3726.0,
   "end_distance_m": 3736.0,
   "start_elevation_m": 1618.3999031592648,
   "end_elevation_m": 1620.2584736895178,
   "min_gradient_pct": -2.8167374193253636,
   "suppressed_max_gradient_pct": 29.374816783883944,
   "suppressed_location_m": [
    2793.0,
    2803.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 16.221506269650945,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 2854.0,
   "end_distance_m": 2874.0,
   "start_elevation_m": 1534.178894396004,
   "end_elevation_m": 1537.423195649934,
   "min_gradient_pct": 0.5182168249484675,
   "suppressed_max_gradient_pct": 23.885992035180834,
   "suppressed_location_m": [
    2788.0,
    2808.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 15.42099654114736,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 2849.0,
   "end_distance_m": 2874.0,
   "start_elevation_m": 1533.5679465146472,
   "end_elevation_m": 1537.423195649934,
   "min_gradient_pct": 1.0658441481709815,
   "suppressed_max_gradient_pct": 21.57323817865381,
   "suppressed_location_m": [
    2788.0,
    2813.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 14.324475542722666,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 2834.0,
   "end_distance_m": 2884.0,
   "start_elevation_m": 1531.608647391035,
   "end_elevation_m": 1538.7708851623963,
   "min_gradient_pct": 5.035743168951285,
   "suppressed_max_gradient_pct": 16.387185869050427,
   "suppressed_location_m": [
    2788.0,
    2838.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 13.279649393985437,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded"
   ],
   "start_distance_m": 4722.0,
   "end_distance_m": 4822.0,
   "start_elevation_m": 1718.906882359363,
   "end_elevation_m": 1732.1865317533484,
   "min_gradient_pct": 6.7587629314025435,
   "suppressed_max_gradient_pct": 14.925390475460517,
   "suppressed_location_m": [
    2784.0,
    2884.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.266,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 154.0,
  "shape_class": "sustained"
 },
 "length_m": 5982.964638368416,
 "start_elevation_m": 1259.8284825317276,
 "end_elevation_m": 1841.5407474941535,
 "endpoint_gain_m": 581.7122649624259,
 "overall_gradient_pct": 9.722809679200473,
 "accumulated_ascent_m": 584.7089993460659,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.204959335909734,
   "start_distance_m": 2879.0,
   "end_distance_m": 2884.0,
   "midpoint_distance_m": 2881.5,
   "start_elevation_m": 1537.7106371956008,
   "end_elevation_m": 1538.7708851623963,
   "start_xy": [
    952432.2695256463,
    6472084.573358845
   ],
   "end_xy": [
    952427.8623156002,
    6472082.211897516
   ]
  },
  "max_10m": {
   "gradient_pct": 18.585705302530187,
   "start_distance_m": 3726.0,
   "end_distance_m": 3736.0,
   "midpoint_distance_m": 3731.0,
   "start_elevation_m": 1618.3999031592648,
   "end_elevation_m": 1620.2584736895178,
   "start_xy": [
    952558.3701017427,
    6472457.376607832
   ],
   "end_xy": [
    952551.2164117382,
    6472450.389139097
   ]
  },
  "max_20m": {
   "gradient_pct": 16.221506269650945,
   "start_distance_m": 2854.0,
   "end_distance_m": 2874.0,
   "midpoint_distance_m": 2864.0,
   "start_elevation_m": 1534.178894396004,
   "end_elevation_m": 1537.423195649934,
   "start_xy": [
    952454.3055758773,
    6472096.38066549
   ],
   "end_xy": [
    952436.6767356925,
    6472086.934820174
   ]
  },
  "max_25m": {
   "gradient_pct": 15.42099654114736,
   "start_distance_m": 2849.0,
   "end_distance_m": 2874.0,
   "midpoint_distance_m": 2861.5,
   "start_elevation_m": 1533.5679465146472,
   "end_elevation_m": 1537.423195649934,
   "start_xy": [
    952458.7127859235,
    6472098.74212682
   ],
   "end_xy": [
    952436.6767356925,
    6472086.934820174
   ]
  },
  "max_50m": {
   "gradient_pct": 14.324475542722666,
   "start_distance_m": 2834.0,
   "end_distance_m": 2884.0,
   "midpoint_distance_m": 2859.0,
   "start_elevation_m": 1531.608647391035,
   "end_elevation_m": 1538.7708851623963,
   "start_xy": [
    952471.9344160621,
    6472105.826510807
   ],
   "end_xy": [
    952427.8623156002,
    6472082.211897516
   ]
  },
  "max_100m": {
   "gradient_pct": 13.279649393985437,
   "start_distance_m": 4722.0,
   "end_distance_m": 4822.0,
   "midpoint_distance_m": 4772.0,
   "start_elevation_m": 1718.906882359363,
   "end_elevation_m": 1732.1865317533484,
   "start_xy": [
    952344.4311092026,
    6472692.485023352
   ],
   "end_xy": [
    952315.6251211374,
    6472781.419164081
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -4.173457634155966,
   "start_distance_m": 2769.0,
   "end_distance_m": 2774.0,
   "midpoint_distance_m": 2771.5,
   "start_elevation_m": 1523.8298492079248,
   "end_elevation_m": 1523.621176326217,
   "start_xy": [
    952525.1396823034,
    6472142.912479209
   ],
   "end_xy": [
    952521.1499477553,
    6472139.898840506
   ]
  },
  "min_10m": {
   "gradient_pct": -2.8167374193253636,
   "start_distance_m": 2769.0,
   "end_distance_m": 2779.0,
   "midpoint_distance_m": 2774.0,
   "start_elevation_m": 1523.8298492079248,
   "end_elevation_m": 1523.5481754659922,
   "start_xy": [
    952525.1396823034,
    6472142.912479209
   ],
   "end_xy": [
    952517.1602132071,
    6472136.8852018025
   ]
  },
  "min_20m": {
   "gradient_pct": 0.5182168249484675,
   "start_distance_m": 2765.0,
   "end_distance_m": 2785.0,
   "midpoint_distance_m": 2775.0,
   "start_elevation_m": 1523.6731328515775,
   "end_elevation_m": 1523.7767762165672,
   "start_xy": [
    952528.331469942,
    6472145.323390172
   ],
   "end_xy": [
    952512.3725317493,
    6472133.268835358
   ]
  },
  "min_25m": {
   "gradient_pct": 1.0658441481709815,
   "start_distance_m": 2761.0,
   "end_distance_m": 2786.0,
   "midpoint_distance_m": 2773.5,
   "start_elevation_m": 1523.5300638574433,
   "end_elevation_m": 1523.796524894486,
   "start_xy": [
    952531.5232575806,
    6472147.734301135
   ],
   "end_xy": [
    952511.5745848396,
    6472132.666107617
   ]
  },
  "min_50m": {
   "gradient_pct": 5.035743168951285,
   "start_distance_m": 2738.0,
   "end_distance_m": 2788.0,
   "midpoint_distance_m": 2763.0,
   "start_elevation_m": 1521.4206165705177,
   "end_elevation_m": 1523.9384881549934,
   "start_xy": [
    952549.8760365023,
    6472161.597039171
   ],
   "end_xy": [
    952509.9786910203,
    6472131.460652136
   ]
  },
  "min_100m": {
   "gradient_pct": 6.7587629314025435,
   "start_distance_m": 5882.0,
   "end_distance_m": 5982.0,
   "midpoint_distance_m": 5932.0,
   "start_elevation_m": 1834.7779992222704,
   "end_elevation_m": 1841.536762153673,
   "start_xy": [
    952204.0018415814,
    6472531.538258107
   ],
   "end_xy": [
    952167.0902265606,
    6472440.030602432
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 33.25566001764173,
   "start_distance_m": 885.0,
   "end_distance_m": 887.0,
   "midpoint_distance_m": 886.0,
   "start_elevation_m": 1348.3465932431488,
   "end_elevation_m": 1349.0117064435017,
   "start_xy": [
    952692.4203095954,
    6471913.262366562
   ],
   "end_xy": [
    952693.0854195073,
    6471915.148534318
   ]
  },
  "max_3m": {
   "gradient_pct": 27.852700849704586,
   "start_distance_m": 884.0,
   "end_distance_m": 887.0,
   "midpoint_distance_m": 885.5,
   "start_elevation_m": 1348.1761254180105,
   "end_elevation_m": 1349.0117064435017,
   "start_xy": [
    952692.0877546394,
    6471912.319282684
   ],
   "end_xy": [
    952693.0854195073,
    6471915.148534318
   ]
  }
 },
 "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": 0.005,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.268,
   "obstruction_max_height_m": 26.59,
   "flagged_windows_m": [
    10,
    20,
    25,
    50
   ]
  },
  "excluded_ranges_m": [
   [
    2780.0,
    2810.0
   ]
  ],
  "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_E952-N6471_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E952-N6472_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E953-N6471_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E953-N6472_0m5.tif"
  ],
  "calculated_at": "2026-09-17T05:13:29+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-alps3.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-alps3",
  "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": [
   "E952-N6471",
   "E952-N6472",
   "E953-N6471",
   "E953-N6472"
  ],
  "elevation_blocks": [
   "21LHD6QM@2025-02-20"
  ],
  "ign_dalles": [
   "LHD_FXX_0952_6472_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0952_6473_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0953_6472_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0953_6473_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD6QM"
  ],
  "ign_editions": [
   "2025-02-20"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0952_6472_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0952_6473_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0953_6472_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0953_6473_MNT_O_0M50_LAMB93_IGN69": "2025-02-20"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 3,
  "carriageway": {
   "stations": 246,
   "stations_resolved": 246,
   "width_median_m": 4.0,
   "width_p10_m": 2.62,
   "width_min_m": 1.0,
   "width_max_m": 11.5,
   "bounded_share": 0.659,
   "unbounded_share": 0.341,
   "confidence_median": 0.681,
   "width_median_bounded_m": 4.0,
   "window_m": [
    2849.0,
    2874.0
   ],
   "width_at_max25_m": 2.0,
   "window_stations": 7,
   "single_track": true,
   "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": 246,
    "stations_resolved": 246,
    "width_median_m": 3.25,
    "width_p10_m": 0.5,
    "width_min_m": 0.0,
    "width_max_m": 12.0,
    "bounded_share": 0.939,
    "unbounded_share": 0.061,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.0,
    "window_m": [
     2849.0,
     2874.0
    ],
    "width_at_max25_m": 2.25,
    "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": "Saint-Colomban-des-Villards",
  "county": "Savoie",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}