{
 "ocl_version": "0.1.0",
 "name": "Silvretta Hochalpenstra\u00dfe (west side)",
 "slug": "silvretta-hochalpenstrasse-west",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 30.972457769928496,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 3401.0,
   "end_distance_m": 3403.0,
   "start_elevation_m": 1429.2165289535526,
   "end_elevation_m": 1429.8359781089512,
   "min_gradient_pct": -246.7927409860181,
   "suppressed_max_gradient_pct": 246.50852242446035,
   "suppressed_location_m": [
    6291.0,
    6293.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 28.356766859019444,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 3401.0,
   "end_distance_m": 3404.0,
   "start_elevation_m": 1429.2165289535526,
   "end_elevation_m": 1430.0672319593232,
   "min_gradient_pct": -217.92269312381904,
   "suppressed_max_gradient_pct": 218.66174838980896,
   "suppressed_location_m": [
    6290.0,
    6293.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.44274877639964,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 3400.0,
   "end_distance_m": 3405.0,
   "start_elevation_m": 1428.9934551006188,
   "end_elevation_m": 1430.2655925394388,
   "min_gradient_pct": -171.40043153298393,
   "suppressed_max_gradient_pct": 185.39469796331105,
   "suppressed_location_m": [
    6289.0,
    6294.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.500369454342945,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 3398.0,
   "end_distance_m": 3408.0,
   "start_elevation_m": 1428.6439788158593,
   "end_elevation_m": 1430.7940157612936,
   "min_gradient_pct": -97.06751825075571,
   "suppressed_max_gradient_pct": 115.21231492844436,
   "suppressed_location_m": [
    6287.0,
    6297.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 18.75360169662713,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 3268.0,
   "end_distance_m": 3288.0,
   "start_elevation_m": 1400.4476390729214,
   "end_elevation_m": 1404.1983594122469,
   "min_gradient_pct": -43.19456977505183,
   "suppressed_max_gradient_pct": 61.893217989572804,
   "suppressed_location_m": [
    6288.0,
    6308.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 17.701140041358485,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 3264.0,
   "end_distance_m": 3289.0,
   "start_elevation_m": 1399.9473758241013,
   "end_elevation_m": 1404.372660834441,
   "min_gradient_pct": -32.2936785922775,
   "suppressed_max_gradient_pct": 51.336707040919464,
   "suppressed_location_m": [
    6287.0,
    6312.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 12.751206310450925,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 5596.0,
   "end_distance_m": 5646.0,
   "start_elevation_m": 1611.0539764536904,
   "end_elevation_m": 1617.429579608916,
   "min_gradient_pct": -10.864719521054667,
   "suppressed_max_gradient_pct": 29.903417433609775,
   "suppressed_location_m": [
    6287.0,
    6337.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 12.365638077313179,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 5788.0,
   "end_distance_m": 5888.0,
   "start_elevation_m": 1629.717773149639,
   "end_elevation_m": 1642.0834112269522,
   "min_gradient_pct": -4.3440004847013824,
   "suppressed_max_gradient_pct": 24.79424739958222,
   "suppressed_location_m": [
    3282.0,
    3382.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.331,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 272.0,
  "shape_class": "sustained"
 },
 "length_m": 12867.955157268992,
 "start_elevation_m": 1123.4696590331987,
 "end_elevation_m": 2031.8453991211009,
 "endpoint_gain_m": 908.3757400879022,
 "overall_gradient_pct": 7.059208156897943,
 "accumulated_ascent_m": 944.0863256224418,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.44274877639964,
   "start_distance_m": 3400.0,
   "end_distance_m": 3405.0,
   "midpoint_distance_m": 3402.5,
   "start_elevation_m": 1428.9934551006188,
   "end_elevation_m": 1430.2655925394388,
   "start_xy": [
    4326145.387250994,
    2648106.885570094
   ],
   "end_xy": [
    4326140.960215049,
    2648104.561489042
   ]
  },
  "max_10m": {
   "gradient_pct": 21.500369454342945,
   "start_distance_m": 3398.0,
   "end_distance_m": 3408.0,
   "midpoint_distance_m": 3403.0,
   "start_elevation_m": 1428.6439788158593,
   "end_elevation_m": 1430.7940157612936,
   "start_xy": [
    4326147.16285987,
    2648107.80598735
   ],
   "end_xy": [
    4326138.303993481,
    2648103.1670404105
   ]
  },
  "max_20m": {
   "gradient_pct": 18.75360169662713,
   "start_distance_m": 3268.0,
   "end_distance_m": 3288.0,
   "midpoint_distance_m": 3278.0,
   "start_elevation_m": 1400.4476390729214,
   "end_elevation_m": 1404.1983594122469,
   "start_xy": [
    4326222.399588815,
    2648209.004176232
   ],
   "end_xy": [
    4326211.144253637,
    2648192.5068056574
   ]
  },
  "max_25m": {
   "gradient_pct": 17.701140041358485,
   "start_distance_m": 3264.0,
   "end_distance_m": 3289.0,
   "midpoint_distance_m": 3276.5,
   "start_elevation_m": 1399.9473758241013,
   "end_elevation_m": 1404.372660834441,
   "start_xy": [
    4326224.836180839,
    2648212.1734547694
   ],
   "end_xy": [
    4326210.636219556,
    2648191.645468689
   ]
  },
  "max_50m": {
   "gradient_pct": 12.751206310450925,
   "start_distance_m": 5596.0,
   "end_distance_m": 5646.0,
   "midpoint_distance_m": 5621.0,
   "start_elevation_m": 1611.0539764536904,
   "end_elevation_m": 1617.429579608916,
   "start_xy": [
    4325602.3722643955,
    2647718.7050468232
   ],
   "end_xy": [
    4325632.473553233,
    2647692.4624829926
   ]
  },
  "max_100m": {
   "gradient_pct": 12.365638077313179,
   "start_distance_m": 5788.0,
   "end_distance_m": 5888.0,
   "midpoint_distance_m": 5838.0,
   "start_elevation_m": 1629.717773149639,
   "end_elevation_m": 1642.0834112269522,
   "start_xy": [
    4325609.658201493,
    2647653.712026966
   ],
   "end_xy": [
    4325552.334210667,
    2647722.111287472
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -171.40043153298393,
   "start_distance_m": 6279.0,
   "end_distance_m": 6284.0,
   "midpoint_distance_m": 6281.5,
   "start_elevation_m": 1681.8302341913154,
   "end_elevation_m": 1673.2602126146662,
   "start_xy": [
    4325514.441081942,
    2647552.2085066983
   ],
   "end_xy": [
    4325515.600954029,
    2647547.3449959
   ]
  },
  "min_10m": {
   "gradient_pct": -97.06751825075571,
   "start_distance_m": 6278.0,
   "end_distance_m": 6288.0,
   "midpoint_distance_m": 6283.0,
   "start_elevation_m": 1682.3399032788184,
   "end_elevation_m": 1672.6331514537428,
   "start_xy": [
    4325514.203324865,
    2647553.1798313465
   ],
   "end_xy": [
    4325516.50373011,
    2647543.4482029434
   ]
  },
  "min_20m": {
   "gradient_pct": -43.19456977505183,
   "start_distance_m": 6267.0,
   "end_distance_m": 6287.0,
   "midpoint_distance_m": 6277.0,
   "start_elevation_m": 1681.1550886007058,
   "end_elevation_m": 1672.5161746456954,
   "start_xy": [
    4325512.450331807,
    2647564.024099618
   ],
   "end_xy": [
    4325516.27803609,
    2647544.4224011824
   ]
  },
  "min_25m": {
   "gradient_pct": -32.2936785922775,
   "start_distance_m": 6263.0,
   "end_distance_m": 6288.0,
   "midpoint_distance_m": 6275.5,
   "start_elevation_m": 1680.7065711018122,
   "end_elevation_m": 1672.6331514537428,
   "start_xy": [
    4325512.013623668,
    2647567.9980011103
   ],
   "end_xy": [
    4325516.50373011,
    2647543.4482029434
   ]
  },
  "min_50m": {
   "gradient_pct": -10.864719521054667,
   "start_distance_m": 6237.0,
   "end_distance_m": 6287.0,
   "midpoint_distance_m": 6262.0,
   "start_elevation_m": 1677.9485344062227,
   "end_elevation_m": 1672.5161746456954,
   "start_xy": [
    4325514.454328375,
    2647593.74861731
   ],
   "end_xy": [
    4325516.27803609,
    2647544.4224011824
   ]
  },
  "min_100m": {
   "gradient_pct": -4.3440004847013824,
   "start_distance_m": 3165.0,
   "end_distance_m": 3265.0,
   "midpoint_distance_m": 3215.0,
   "start_elevation_m": 1404.3952325378739,
   "end_elevation_m": 1400.0512320531725,
   "start_xy": [
    4326270.42344145,
    2648298.3563103997
   ],
   "end_xy": [
    4326224.197420619,
    2648211.4058008497
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 30.972457769928496,
   "start_distance_m": 3401.0,
   "end_distance_m": 3403.0,
   "midpoint_distance_m": 3402.0,
   "start_elevation_m": 1429.2165289535526,
   "end_elevation_m": 1429.8359781089512,
   "start_xy": [
    4326144.501843805,
    2648106.4207538837
   ],
   "end_xy": [
    4326142.731029427,
    2648105.4911214625
   ]
  },
  "max_3m": {
   "gradient_pct": 28.356766859019444,
   "start_distance_m": 3401.0,
   "end_distance_m": 3404.0,
   "midpoint_distance_m": 3402.5,
   "start_elevation_m": 1429.2165289535526,
   "end_elevation_m": 1430.0672319593232,
   "start_xy": [
    4326144.501843805,
    2648106.4207538837
   ],
   "end_xy": [
    4326141.845622238,
    2648105.026305252
   ]
  }
 },
 "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": {
  "structure_suppression": {
   "masked_fraction": 0.026,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0
   ],
   "windows_unresolved": []
  },
  "no_bench_suppression": {
   "masked_fraction": 0.029,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.036,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 3,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 3321.0,
     "end_m": 3346.0,
     "raw_pct": 32.49,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 3330.0,
     "end_m": 3350.0,
     "raw_pct": 32.12,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 3336.0,
     "end_m": 3346.0,
     "raw_pct": 39.87,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 3339.0,
     "end_m": 3344.0,
     "raw_pct": 48.59,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 3362.0,
     "end_m": 3382.0,
     "raw_pct": 28.13,
     "reason": "staircase"
    },
    {
     "window_m": 10.0,
     "start_m": 3362.0,
     "end_m": 3372.0,
     "raw_pct": 36.63,
     "reason": "hump+short-step"
    },
    {
     "window_m": 5.0,
     "start_m": 3365.0,
     "end_m": 3370.0,
     "raw_pct": 46.03,
     "reason": "hump"
    },
    {
     "window_m": 25.0,
     "start_m": 3293.0,
     "end_m": 3318.0,
     "raw_pct": 24.62,
     "reason": "mask-edge"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.017,
   "obstruction_max_height_m": 25.05,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    670.0,
    750.0
   ],
   [
    1517.0,
    1568.0
   ],
   [
    3190.0,
    3220.0
   ],
   [
    3291.0,
    3352.0
   ],
   [
    3360.0,
    3384.0
   ],
   [
    3582.0,
    3653.0
   ],
   [
    6254.0,
    6347.0
   ],
   [
    7206.0,
    7246.0
   ]
  ],
  "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:3035",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/at/bev-als_dtm_E4325-N2644.tif",
   "data/cache/at/bev-als_dtm_E4325-N2645.tif",
   "data/cache/at/bev-als_dtm_E4325-N2646.tif",
   "data/cache/at/bev-als_dtm_E4325-N2647.tif",
   "data/cache/at/bev-als_dtm_E4325-N2648.tif",
   "data/cache/at/bev-als_dtm_E4326-N2644.tif",
   "data/cache/at/bev-als_dtm_E4326-N2645.tif",
   "data/cache/at/bev-als_dtm_E4326-N2647.tif",
   "data/cache/at/bev-als_dtm_E4326-N2648.tif",
   "data/cache/at/bev-als_dtm_E4326-N2649.tif",
   "data/cache/at/bev-als_dtm_E4327-N2644.tif",
   "data/cache/at/bev-als_dtm_E4327-N2645.tif"
  ],
  "calculated_at": "2026-09-15T05:41:42+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/austria-2026-09-11-batch-at-passes.osm.pbf",
  "osm_snapshot": "",
  "run_id": "at-passes-260915",
  "elevation_provider": "BEV ALS DTM 1 m",
  "elevation_licence": "Creative Commons Attribution 4.0 (CC BY 4.0) \u2014 \u00a9 BEV / L\u00e4nder, data.gv.at",
  "elevation_dataset": "ALS DTM H\u00f6henraster 1 m (Bundesamt f\u00fcr Eich- und Vermessungswesen with the L\u00e4nder), EPSG:3035",
  "elevation_tile_ids": [
   "E4325-N2644",
   "E4325-N2645",
   "E4325-N2646",
   "E4325-N2647",
   "E4325-N2648",
   "E4326-N2644",
   "E4326-N2645",
   "E4326-N2647",
   "E4326-N2648",
   "E4326-N2649",
   "E4327-N2644",
   "E4327-N2645"
  ],
  "elevation_blocks": [
   "N2600000E4300000@2022-09-15"
  ],
  "climb_origin": "named-pass",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "structure_mask_ranges_m": [
   [
    3587.8,
    3617.8
   ],
   [
    3600.1,
    3630.1
   ],
   [
    3600.3,
    3630.3
   ],
   [
    3600.4,
    3630.4
   ],
   [
    3618.2,
    3648.2
   ],
   [
    1522.6,
    1552.6
   ],
   [
    1533.6,
    1563.6
   ],
   [
    675.2,
    705.2
   ],
   [
    685.1,
    715.1
   ],
   [
    6284.1,
    6314.1
   ],
   [
    6259.7,
    6289.7
   ],
   [
    7211.4,
    7241.4
   ]
  ],
  "mask_basin_extension_m": 58.0,
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Gaschurn",
  "county": "Vorarlberg",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 },
 "review_flags": [
  {
   "kind": "possible-bridge-or-hollow",
   "span_m": [
    3199.0,
    3365.0
   ],
   "status": "pending-human-review",
   "noted": "2026-09-21",
   "figure_adjusted": false
  }
 ]
}