{
 "ocl_version": "0.1.0",
 "name": "Clos des Fiz",
 "slug": "clos-des-fiz",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 34.193781492592734,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 260.0,
   "end_distance_m": 262.0,
   "start_elevation_m": 870.2073682156936,
   "end_elevation_m": 870.8912438455454,
   "min_gradient_pct": -1.672655566864023
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 33.066611512181986,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 267.0,
   "end_distance_m": 270.0,
   "start_elevation_m": 872.3501284005681,
   "end_elevation_m": 873.3421267459336,
   "min_gradient_pct": -0.010559964641743136
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 32.90708663032319,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 265.0,
   "end_distance_m": 270.0,
   "start_elevation_m": 871.6967724144174,
   "end_elevation_m": 873.3421267459336,
   "min_gradient_pct": 1.7419485864297712
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 31.34758530239992,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 260.0,
   "end_distance_m": 270.0,
   "start_elevation_m": 870.2073682156936,
   "end_elevation_m": 873.3421267459336,
   "min_gradient_pct": 2.882530486434689
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 28.238784853255652,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 257.0,
   "end_distance_m": 277.0,
   "start_elevation_m": 869.5823642465346,
   "end_elevation_m": 875.2301212171857,
   "min_gradient_pct": 5.5376136935137765
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 25.304195116734718,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 254.0,
   "end_distance_m": 279.0,
   "start_elevation_m": 869.2748047821211,
   "end_elevation_m": 875.6008535613048,
   "min_gradient_pct": 6.623507684210381
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 16.939184765631126,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 229.0,
   "end_distance_m": 279.0,
   "start_elevation_m": 867.1312611784892,
   "end_elevation_m": 875.6008535613048,
   "min_gradient_pct": 7.806662083535684
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.497274376955602,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 179.0,
   "end_distance_m": 279.0,
   "start_elevation_m": 860.1035791843492,
   "end_elevation_m": 875.6008535613048,
   "min_gradient_pct": 11.122838489157175
  }
 ],
 "shape": {
  "ascent_concentration": 0.295,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 183.0,
  "shape_class": "sustained"
 },
 "length_m": 279.93627834971795,
 "start_elevation_m": 838.4796361796839,
 "end_elevation_m": 875.7261727930245,
 "endpoint_gain_m": 37.246536613340595,
 "overall_gradient_pct": 13.305362503537092,
 "accumulated_ascent_m": 37.314862844927916,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 32.90708663032319,
   "start_distance_m": 265.0,
   "end_distance_m": 270.0,
   "midpoint_distance_m": 267.5,
   "start_elevation_m": 871.6967724144174,
   "end_elevation_m": 873.3421267459336,
   "start_xy": [
    987969.7913785531,
    6539815.614575548
   ],
   "end_xy": [
    987971.6956753645,
    6539810.991410652
   ]
  },
  "max_10m": {
   "gradient_pct": 31.34758530239992,
   "start_distance_m": 260.0,
   "end_distance_m": 270.0,
   "midpoint_distance_m": 265.0,
   "start_elevation_m": 870.2073682156936,
   "end_elevation_m": 873.3421267459336,
   "start_xy": [
    987966.606632122,
    6539819.046467868
   ],
   "end_xy": [
    987971.6956753645,
    6539810.991410652
   ]
  },
  "max_20m": {
   "gradient_pct": 28.238784853255652,
   "start_distance_m": 257.0,
   "end_distance_m": 277.0,
   "midpoint_distance_m": 267.0,
   "start_elevation_m": 869.5823642465346,
   "end_elevation_m": 875.2301212171857,
   "start_xy": [
    987964.4849604247,
    6539821.007692915
   ],
   "end_xy": [
    987974.3616909003,
    6539804.518979798
   ]
  },
  "max_25m": {
   "gradient_pct": 25.304195116734718,
   "start_distance_m": 254.0,
   "end_distance_m": 279.0,
   "midpoint_distance_m": 266.5,
   "start_elevation_m": 869.2748047821211,
   "end_elevation_m": 875.6008535613048,
   "start_xy": [
    987962.8851258402,
    6539823.545512708
   ],
   "end_xy": [
    987975.1234096248,
    6539802.669713839
   ]
  },
  "max_50m": {
   "gradient_pct": 16.939184765631126,
   "start_distance_m": 229.0,
   "end_distance_m": 279.0,
   "midpoint_distance_m": 254.0,
   "start_elevation_m": 867.1312611784892,
   "end_elevation_m": 875.6008535613048,
   "start_xy": [
    987957.3564793807,
    6539847.86911966
   ],
   "end_xy": [
    987975.1234096248,
    6539802.669713839
   ]
  },
  "max_100m": {
   "gradient_pct": 15.497274376955602,
   "start_distance_m": 179.0,
   "end_distance_m": 279.0,
   "midpoint_distance_m": 229.0,
   "start_elevation_m": 860.1035791843492,
   "end_elevation_m": 875.6008535613048,
   "start_xy": [
    987929.9760612837,
    6539870.730517938
   ],
   "end_xy": [
    987975.1234096248,
    6539802.669713839
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 1.7419485864297712,
   "start_distance_m": 232.0,
   "end_distance_m": 237.0,
   "midpoint_distance_m": 234.5,
   "start_elevation_m": 867.3413056911583,
   "end_elevation_m": 867.4284031204797,
   "start_xy": [
    987958.0111134719,
    6539844.941415063
   ],
   "end_xy": [
    987959.1021702907,
    6539840.061907401
   ]
  },
  "min_10m": {
   "gradient_pct": 2.882530486434689,
   "start_distance_m": 232.0,
   "end_distance_m": 242.0,
   "midpoint_distance_m": 237.0,
   "start_elevation_m": 867.3413056911583,
   "end_elevation_m": 867.6295587398017,
   "start_xy": [
    987958.0111134719,
    6539844.941415063
   ],
   "end_xy": [
    987960.1932271093,
    6539835.1823997395
   ]
  },
  "min_20m": {
   "gradient_pct": 5.5376136935137765,
   "start_distance_m": 223.0,
   "end_distance_m": 243.0,
   "midpoint_distance_m": 233.0,
   "start_elevation_m": 866.5807374936423,
   "end_elevation_m": 867.6882602323451,
   "start_xy": [
    987956.0472111983,
    6539853.724528854
   ],
   "end_xy": [
    987960.411438473,
    6539834.2064982075
   ]
  },
  "min_25m": {
   "gradient_pct": 6.623507684210381,
   "start_distance_m": 220.0,
   "end_distance_m": 245.0,
   "midpoint_distance_m": 232.5,
   "start_elevation_m": 866.2502218826498,
   "end_elevation_m": 867.9060988037024,
   "start_xy": [
    987955.3925771071,
    6539856.652233451
   ],
   "end_xy": [
    987960.8293753633,
    6539832.250803723
   ]
  },
  "min_50m": {
   "gradient_pct": 7.806662083535684,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 838.4796361796839,
   "end_elevation_m": 842.3829672214517,
   "start_xy": [
    987846.232,
    6539854.508
   ],
   "end_xy": [
    987877.1883347932,
    6539828.180931965
   ]
  },
  "min_100m": {
   "gradient_pct": 11.122838489157175,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 838.4796361796839,
   "end_elevation_m": 849.6024746688411,
   "start_xy": [
    987846.232,
    6539854.508
   ],
   "end_xy": [
    987910.9992101709,
    6539807.296143976
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 34.193781492592734,
   "start_distance_m": 260.0,
   "end_distance_m": 262.0,
   "midpoint_distance_m": 261.0,
   "start_elevation_m": 870.2073682156936,
   "end_elevation_m": 870.8912438455454,
   "start_xy": [
    987966.606632122,
    6539819.046467868
   ],
   "end_xy": [
    987968.3961974948,
    6539818.153464073
   ]
  },
  "max_3m": {
   "gradient_pct": 33.066611512181986,
   "start_distance_m": 267.0,
   "end_distance_m": 270.0,
   "midpoint_distance_m": 268.5,
   "start_elevation_m": 872.3501284005681,
   "end_elevation_m": 873.3421267459336,
   "start_xy": [
    987970.5530972776,
    6539813.76530959
   ],
   "end_xy": [
    987971.6956753645,
    6539810.991410652
   ]
  }
 },
 "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": 0.096,
   "obstruction_max_height_m": 13.02,
   "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_E987-N6539_0m5.tif"
  ],
  "calculated_at": "2026-09-17T02:26:37+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": [
   "E987-N6539"
  ],
  "elevation_blocks": [
   "21LHD5QK2@2025-06-13"
  ],
  "ign_dalles": [
   "LHD_FXX_0987_6540_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD5QK2"
  ],
  "ign_editions": [
   "2025-06-13"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0987_6540_MNT_O_0M50_LAMB93_IGN69": "2025-06-13"
  },
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "carriageway": {
   "stations": 18,
   "stations_resolved": 18,
   "width_median_m": 5.5,
   "width_p10_m": 3.98,
   "width_min_m": 2.0,
   "width_max_m": 8.0,
   "bounded_share": 0.5,
   "unbounded_share": 0.5,
   "confidence_median": 0.26,
   "width_median_bounded_m": 5.75,
   "window_m": [
    254.0,
    279.0
   ],
   "width_at_max25_m": 6.0,
   "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": 18,
    "stations_resolved": 18,
    "width_median_m": 5.12,
    "width_p10_m": 1.78,
    "width_min_m": 1.0,
    "width_max_m": 9.5,
    "bounded_share": 0.944,
    "unbounded_share": 0.056,
    "confidence_median": 1.0,
    "width_median_bounded_m": 5.0,
    "window_m": [
     254.0,
     279.0
    ],
    "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": "Saint-Gervais-les-Bains",
  "county": "Haute-Savoie",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}