{
 "ocl_version": "0.1.0",
 "name": "Route de Tettola",
 "slug": "route-de-tettola",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 22.541953539669812,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 422.0,
   "end_distance_m": 424.0,
   "start_elevation_m": 29.37168782804397,
   "end_elevation_m": 29.822526898837367,
   "min_gradient_pct": -0.3358812011625467
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.106598939279582,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 421.0,
   "end_distance_m": 424.0,
   "start_elevation_m": 29.15932893065898,
   "end_elevation_m": 29.822526898837367,
   "min_gradient_pct": -0.34171297114073224
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.81006000961169,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 421.0,
   "end_distance_m": 426.0,
   "start_elevation_m": 29.15932893065898,
   "end_elevation_m": 30.249831931139564,
   "min_gradient_pct": 0.5666402188119513
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.840251184392677,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 428.0,
   "end_distance_m": 438.0,
   "start_elevation_m": 30.60297856635621,
   "end_elevation_m": 32.68700368479548,
   "min_gradient_pct": 0.8297374025831106
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.59342721112465,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 420.0,
   "end_distance_m": 440.0,
   "start_elevation_m": 28.94544552042789,
   "end_elevation_m": 33.06413096265282,
   "min_gradient_pct": 0.9141544259163915
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.239821553081242,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 417.0,
   "end_distance_m": 442.0,
   "start_elevation_m": 28.39411986604874,
   "end_elevation_m": 33.45407525431905,
   "min_gradient_pct": 0.9264393412294626
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.25048785326092,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 410.0,
   "end_distance_m": 460.0,
   "start_elevation_m": 27.152512343866825,
   "end_elevation_m": 36.777756270497285,
   "min_gradient_pct": 1.0944019600846584
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.451001403453134,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 406.0,
   "end_distance_m": 506.0,
   "start_elevation_m": 26.650224655584218,
   "end_elevation_m": 42.10122605903735,
   "min_gradient_pct": 1.5975756061709392
  }
 ],
 "shape": {
  "ascent_concentration": 0.436,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 116.0,
  "shape_class": "sustained"
 },
 "length_m": 613.6904960584792,
 "start_elevation_m": 3.762603671430125,
 "end_elevation_m": 52.93938112307024,
 "endpoint_gain_m": 49.17677745164011,
 "overall_gradient_pct": 8.013286464021435,
 "accumulated_ascent_m": 49.20464565257104,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.81006000961169,
   "start_distance_m": 421.0,
   "end_distance_m": 426.0,
   "midpoint_distance_m": 423.5,
   "start_elevation_m": 29.15932893065898,
   "end_elevation_m": 30.249831931139564,
   "start_xy": [
    1217909.4996611213,
    6197350.6300654
   ],
   "end_xy": [
    1217912.8809382485,
    6197346.946729278
   ]
  },
  "max_10m": {
   "gradient_pct": 20.840251184392677,
   "start_distance_m": 428.0,
   "end_distance_m": 438.0,
   "midpoint_distance_m": 433.0,
   "start_elevation_m": 30.60297856635621,
   "end_elevation_m": 32.68700368479548,
   "start_xy": [
    1217914.2334490994,
    6197345.47339483
   ],
   "end_xy": [
    1217920.9960033535,
    6197338.106722585
   ]
  },
  "max_20m": {
   "gradient_pct": 20.59342721112465,
   "start_distance_m": 420.0,
   "end_distance_m": 440.0,
   "midpoint_distance_m": 430.0,
   "start_elevation_m": 28.94544552042789,
   "end_elevation_m": 33.06413096265282,
   "start_xy": [
    1217908.8234056958,
    6197351.366732625
   ],
   "end_xy": [
    1217922.3485142044,
    6197336.633388136
   ]
  },
  "max_25m": {
   "gradient_pct": 20.239821553081242,
   "start_distance_m": 417.0,
   "end_distance_m": 442.0,
   "midpoint_distance_m": 429.5,
   "start_elevation_m": 28.39411986604874,
   "end_elevation_m": 33.45407525431905,
   "start_xy": [
    1217906.7946394198,
    6197353.576734298
   ],
   "end_xy": [
    1217923.7010250553,
    6197335.160053687
   ]
  },
  "max_50m": {
   "gradient_pct": 19.25048785326092,
   "start_distance_m": 410.0,
   "end_distance_m": 460.0,
   "midpoint_distance_m": 435.0,
   "start_elevation_m": 27.152512343866825,
   "end_elevation_m": 36.777756270497285,
   "start_xy": [
    1217903.1331713467,
    6197359.531483792
   ],
   "end_xy": [
    1217939.1049737758,
    6197333.531048372
   ]
  },
  "max_100m": {
   "gradient_pct": 15.451001403453134,
   "start_distance_m": 406.0,
   "end_distance_m": 506.0,
   "midpoint_distance_m": 456.0,
   "start_elevation_m": 26.650224655584218,
   "end_elevation_m": 42.10122605903735,
   "start_xy": [
    1217901.0870662117,
    6197362.968554314
   ],
   "end_xy": [
    1217966.1701195892,
    6197370.640711788
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.5666402188119513,
   "start_distance_m": 23.0,
   "end_distance_m": 28.0,
   "midpoint_distance_m": 25.5,
   "start_elevation_m": 3.997690802853601,
   "end_elevation_m": 4.0260228137941985,
   "start_xy": [
    1217678.5393743904,
    6197351.8778416505
   ],
   "end_xy": [
    1217682.4772818664,
    6197354.958894183
   ]
  },
  "min_10m": {
   "gradient_pct": 0.8297374025831106,
   "start_distance_m": 12.0,
   "end_distance_m": 22.0,
   "midpoint_distance_m": 17.0,
   "start_elevation_m": 3.894633499152959,
   "end_elevation_m": 3.9776072394112703,
   "start_xy": [
    1217669.8759779427,
    6197345.099526078
   ],
   "end_xy": [
    1217677.7517928951,
    6197351.261631144
   ]
  },
  "min_20m": {
   "gradient_pct": 0.9141544259163915,
   "start_distance_m": 2.0,
   "end_distance_m": 22.0,
   "midpoint_distance_m": 12.0,
   "start_elevation_m": 3.794776354227992,
   "end_elevation_m": 3.9776072394112703,
   "start_xy": [
    1217662.0001629905,
    6197338.937421014
   ],
   "end_xy": [
    1217677.7517928951,
    6197351.261631144
   ]
  },
  "min_25m": {
   "gradient_pct": 0.9264393412294626,
   "start_distance_m": 3.0,
   "end_distance_m": 28.0,
   "midpoint_distance_m": 15.5,
   "start_elevation_m": 3.794412978486833,
   "end_elevation_m": 4.0260228137941985,
   "start_xy": [
    1217662.7877444858,
    6197339.55363152
   ],
   "end_xy": [
    1217682.4772818664,
    6197354.958894183
   ]
  },
  "min_50m": {
   "gradient_pct": 1.0944019600846584,
   "start_distance_m": 1.0,
   "end_distance_m": 51.0,
   "midpoint_distance_m": 26.0,
   "start_elevation_m": 3.7837243833857803,
   "end_elevation_m": 4.3309253634281095,
   "start_xy": [
    1217661.2125814953,
    6197338.321210506
   ],
   "end_xy": [
    1217700.5916562567,
    6197369.131735833
   ]
  },
  "min_100m": {
   "gradient_pct": 1.5975756061709392,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 3.762603671430125,
   "end_elevation_m": 5.360179277601064,
   "start_xy": [
    1217660.425,
    6197337.705
   ],
   "end_xy": [
    1217739.1831495229,
    6197399.326050654
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 22.541953539669812,
   "start_distance_m": 422.0,
   "end_distance_m": 424.0,
   "midpoint_distance_m": 423.0,
   "start_elevation_m": 29.37168782804397,
   "end_elevation_m": 29.822526898837367,
   "start_xy": [
    1217910.1759165467,
    6197349.893398176
   ],
   "end_xy": [
    1217911.5284273976,
    6197348.420063728
   ]
  },
  "max_3m": {
   "gradient_pct": 22.106598939279582,
   "start_distance_m": 421.0,
   "end_distance_m": 424.0,
   "midpoint_distance_m": 422.5,
   "start_elevation_m": 29.15932893065898,
   "end_elevation_m": 29.822526898837367,
   "start_xy": [
    1217909.4996611213,
    6197350.6300654
   ],
   "end_xy": [
    1217911.5284273976,
    6197348.420063728
   ]
  }
 },
 "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": 0.018,
   "obstruction_max_height_m": 6.01,
   "flagged_windows_m": [
    2
   ]
  },
  "review": [],
  "extent": [
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "33abfff569d4360542e616d0d42c1b94d0a711fa",
   "code_git_dirty": "false",
   "analysis_version": "0.1.0",
   "analysis_config_digest": "sha256:8c94015b54267da4",
   "python": "3.14.4",
   "numpy": "2.5.3",
   "rasterio": "1.5.1",
   "pyproj": "3.8.0",
   "laspy": "2.7.0",
   "shapely": "2.1.2",
   "pyosmium": "4.3.1",
   "libosmium": "2.23.1",
   "gdal": "3.12.4",
   "proj": "9.8.1",
   "run_id": "fr-co3",
   "road_pbf": "block-batch-fr-co3.osm.pbf",
   "region_key": "france",
   "crs": "EPSG:2154",
   "elevation_provider_key": "ign-lidarhd",
   "tile_index": "wms-grid",
   "authority": "bdtopo",
   "registry_pbf": "france-vosges-2026-09-16.osm.pbf",
   "tile_index_snapshot": "sha256:2a717d675f2607cc"
  },
  "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_E1217-N6197_0m5@21LHDCorseVS-2025-04-02.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1218-N6197_0m5@21LHDCorseVS-2025-04-02.tif"
  ],
  "calculated_at": "2026-09-25T00:50:21+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-co3.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-co3",
  "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": [
   "E1217-N6197",
   "E1218-N6197"
  ],
  "elevation_blocks": [
   "21LHDCorseVS@2025-04-02"
  ],
  "ign_dalles": [
   "LHD_FXX_1217_6198_MNT_O_0M50_LAMB93_IGN78",
   "LHD_FXX_1218_6198_MNT_O_0M50_LAMB93_IGN78"
  ],
  "ign_missions": [
   "21LHDCorseVS"
  ],
  "ign_editions": [
   "2025-04-02"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1217_6198_MNT_O_0M50_LAMB93_IGN78": "2025-04-02",
   "LHD_FXX_1218_6198_MNT_O_0M50_LAMB93_IGN78": "2025-04-02"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 3,
  "carriageway": {
   "stations": 31,
   "stations_resolved": 31,
   "width_median_m": 7.75,
   "width_p10_m": 5.5,
   "width_min_m": 4.75,
   "width_max_m": 11.25,
   "bounded_share": 0.161,
   "unbounded_share": 0.839,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.5,
   "window_m": [
    417.0,
    442.0
   ],
   "width_at_max25_m": 5.5,
   "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": 31,
    "stations_resolved": 31,
    "width_median_m": 8.75,
    "width_p10_m": 3.25,
    "width_min_m": 2.0,
    "width_max_m": 12.0,
    "bounded_share": 0.484,
    "unbounded_share": 0.516,
    "confidence_median": 0.0,
    "width_median_bounded_m": 5.25,
    "window_m": [
     417.0,
     442.0
    ],
    "width_at_max25_m": 4.75,
    "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-Florent",
  "county": "Haute-Corse",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}