{
 "ocl_version": "0.1.0",
 "name": "Alptobelweg",
 "slug": "alptobelweg",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 26.88580416034938,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 625.0,
   "end_distance_m": 627.0,
   "start_elevation_m": 1452.5608412143395,
   "end_elevation_m": 1453.0985572975464,
   "min_gradient_pct": -1.6846114607005802
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 26.61043916575636,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 624.0,
   "end_distance_m": 627.0,
   "start_elevation_m": 1452.3002441225738,
   "end_elevation_m": 1453.0985572975464,
   "min_gradient_pct": -1.3630184001840462
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.94580903763108,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 624.0,
   "end_distance_m": 629.0,
   "start_elevation_m": 1452.3002441225738,
   "end_elevation_m": 1453.5475345744553,
   "min_gradient_pct": 1.329150159240271
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.456776177762094,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 606.0,
   "end_distance_m": 616.0,
   "start_elevation_m": 1448.584366211646,
   "end_elevation_m": 1450.8300438294223,
   "min_gradient_pct": 2.6858645415472893
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.549434900210827,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 608.0,
   "end_distance_m": 628.0,
   "start_elevation_m": 1449.0238081156165,
   "end_elevation_m": 1453.3336950956586,
   "min_gradient_pct": 3.1589231689872577
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.5135481954876,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 604.0,
   "end_distance_m": 629.0,
   "start_elevation_m": 1448.1691475255834,
   "end_elevation_m": 1453.5475345744553,
   "min_gradient_pct": 3.2691890380865516
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.185174416920745,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 588.0,
   "end_distance_m": 638.0,
   "start_elevation_m": 1445.3195373235872,
   "end_elevation_m": 1455.4121245320475,
   "min_gradient_pct": 3.792672821871747
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.645619521499157,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 539.0,
   "end_distance_m": 639.0,
   "start_elevation_m": 1437.9303897948105,
   "end_elevation_m": 1455.5760093163096,
   "min_gradient_pct": 4.191585386320867
  }
 ],
 "shape": {
  "ascent_concentration": 0.491,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 222.0,
  "shape_class": "stepped"
 },
 "length_m": 647.8000000000043,
 "start_elevation_m": 1399.481418729139,
 "end_elevation_m": 1456.6138669402997,
 "endpoint_gain_m": 57.132448211160636,
 "overall_gradient_pct": 8.819457889959905,
 "accumulated_ascent_m": 57.17333876316616,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.94580903763108,
   "start_distance_m": 624.0,
   "end_distance_m": 629.0,
   "midpoint_distance_m": 626.5,
   "start_elevation_m": 1452.3002441225738,
   "end_elevation_m": 1453.5475345744553,
   "start_xy": [
    4314570.983301208,
    2650557.85557742
   ],
   "end_xy": [
    4314566.137711213,
    2650556.6225930545
   ]
  },
  "max_10m": {
   "gradient_pct": 22.456776177762094,
   "start_distance_m": 606.0,
   "end_distance_m": 616.0,
   "midpoint_distance_m": 611.0,
   "start_elevation_m": 1448.584366211646,
   "end_elevation_m": 1450.8300438294223,
   "start_xy": [
    4314587.386454645,
    2650564.352392179
   ],
   "end_xy": [
    4314577.820315499,
    2650561.9371914556
   ]
  },
  "max_20m": {
   "gradient_pct": 21.549434900210827,
   "start_distance_m": 608.0,
   "end_distance_m": 628.0,
   "midpoint_distance_m": 618.0,
   "start_elevation_m": 1449.0238081156165,
   "end_elevation_m": 1453.3336950956586,
   "start_xy": [
    4314585.387149408,
    2650564.4010227784
   ],
   "end_xy": [
    4314567.106947866,
    2650556.868723607
   ]
  },
  "max_25m": {
   "gradient_pct": 21.5135481954876,
   "start_distance_m": 604.0,
   "end_distance_m": 629.0,
   "midpoint_distance_m": 616.5,
   "start_elevation_m": 1448.1691475255834,
   "end_elevation_m": 1453.5475345744553,
   "start_xy": [
    4314589.385778312,
    2650564.300383764
   ],
   "end_xy": [
    4314566.137711213,
    2650556.6225930545
   ]
  },
  "max_50m": {
   "gradient_pct": 20.185174416920745,
   "start_distance_m": 588.0,
   "end_distance_m": 638.0,
   "midpoint_distance_m": 613.0,
   "start_elevation_m": 1445.3195373235872,
   "end_elevation_m": 1455.4121245320475,
   "start_xy": [
    4314605.097316576,
    2650561.5771715106
   ],
   "end_xy": [
    4314557.427689623,
    2650556.469598312
   ]
  },
  "max_100m": {
   "gradient_pct": 17.645619521499157,
   "start_distance_m": 539.0,
   "end_distance_m": 639.0,
   "midpoint_distance_m": 589.0,
   "start_elevation_m": 1437.9303897948105,
   "end_elevation_m": 1455.5760093163096,
   "start_xy": [
    4314653.886413187,
    2650562.244507883
   ],
   "end_xy": [
    4314556.524912324,
    2650556.8987600715
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 1.329150159240271,
   "start_distance_m": 420.0,
   "end_distance_m": 425.0,
   "midpoint_distance_m": 422.5,
   "start_elevation_m": 1420.1279870583046,
   "end_elevation_m": 1420.1944445662666,
   "start_xy": [
    4314766.425802566,
    2650597.36015133
   ],
   "end_xy": [
    4314762.1052945275,
    2650596.289109713
   ]
  },
  "min_10m": {
   "gradient_pct": 2.6858645415472893,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 1399.481418729139,
   "end_elevation_m": 1399.7500051832938,
   "start_xy": [
    4314806.129,
    2651009.239
   ],
   "end_xy": [
    4314802.18606633,
    2651000.0491547156
   ]
  },
  "min_20m": {
   "gradient_pct": 3.1589231689872577,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 1399.481418729139,
   "end_elevation_m": 1400.1132033629365,
   "start_xy": [
    4314806.129,
    2651009.239
   ],
   "end_xy": [
    4314798.398053346,
    2650990.795133942
   ]
  },
  "min_25m": {
   "gradient_pct": 3.2691890380865516,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 1399.481418729139,
   "end_elevation_m": 1400.2987159886607,
   "start_xy": [
    4314806.129,
    2651009.239
   ],
   "end_xy": [
    4314796.68574587,
    2650986.0992343826
   ]
  },
  "min_50m": {
   "gradient_pct": 3.792672821871747,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 1399.481418729139,
   "end_elevation_m": 1401.377755140075,
   "start_xy": [
    4314806.129,
    2651009.239
   ],
   "end_xy": [
    4314789.834779078,
    2650962.0759511557
   ]
  },
  "min_100m": {
   "gradient_pct": 4.191585386320867,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 1399.481418729139,
   "end_elevation_m": 1403.67300411546,
   "start_xy": [
    4314806.129,
    2651009.239
   ],
   "end_xy": [
    4314779.274825873,
    2650913.205216828
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 26.88580416034938,
   "start_distance_m": 625.0,
   "end_distance_m": 627.0,
   "midpoint_distance_m": 626.0,
   "start_elevation_m": 1452.5608412143395,
   "end_elevation_m": 1453.0985572975464,
   "start_xy": [
    4314570.01400825,
    2650557.6096687694
   ],
   "end_xy": [
    4314568.07597918,
    2650557.1156613594
   ]
  },
  "max_3m": {
   "gradient_pct": 26.61043916575636,
   "start_distance_m": 624.0,
   "end_distance_m": 627.0,
   "midpoint_distance_m": 625.5,
   "start_elevation_m": 1452.3002441225738,
   "end_elevation_m": 1453.0985572975464,
   "start_xy": [
    4314570.983301208,
    2650557.85557742
   ],
   "end_xy": [
    4314568.07597918,
    2650557.1156613594
   ]
  }
 },
 "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": 0.063,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.006,
   "obstruction_max_height_m": 2.62,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    401.0,
    441.0
   ]
  ],
  "review": [],
  "extent": [
   "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:3035",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/at/bev-als_dtm_E4314-N2650.tif",
   "data/cache/at/bev-als_dtm_E4314-N2651.tif"
  ],
  "calculated_at": "2026-09-15T21:24:58+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/austria-2026-09-11.osm.pbf",
  "osm_snapshot": "2026-09-10T20:21:06Z",
  "run_id": "retro-260915-dogleg-all",
  "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": [
   "E4314-N2650",
   "E4314-N2651"
  ],
  "elevation_blocks": [
   "N2650000E4300000@2022-09-15"
  ],
  "bev_dsm_release": {
   "N2650000E4300000": "20220915"
  },
  "route_cut_m": 647.8,
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "structure_mask_ranges_m": [
   [
    406.9,
    436.9
   ]
  ],
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "St. Gallenkirch",
  "county": "Vorarlberg",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}