{
 "ocl_version": "0.1.0",
 "name": "Vorderbergstrasse",
 "slug": "vorderbergstrasse-4-3",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 43.59791424777768,
   "diagnostic": true,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 380.0,
   "end_distance_m": 382.0,
   "start_elevation_m": 581.8852632717635,
   "end_elevation_m": 582.7572215567191,
   "min_gradient_pct": -35.46225224209252,
   "suppressed_max_gradient_pct": 55.99829797828306,
   "suppressed_location_m": [
    5636.0,
    5638.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 38.247539375553664,
   "diagnostic": true,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 2188.0,
   "end_distance_m": 2191.0,
   "start_elevation_m": 815.1617807676246,
   "end_elevation_m": 816.3092069488912,
   "min_gradient_pct": -23.8136268141299,
   "suppressed_max_gradient_pct": 54.08316606561433,
   "suppressed_location_m": [
    5636.0,
    5639.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 34.56212104811357,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 2956.0,
   "end_distance_m": 2961.0,
   "start_elevation_m": 915.9537794472893,
   "end_elevation_m": 917.681885499695,
   "min_gradient_pct": -12.28225532922579,
   "suppressed_max_gradient_pct": 42.65026993783522,
   "suppressed_location_m": [
    5636.0,
    5641.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 26.754742024111238,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 5178.0,
   "end_distance_m": 5188.0,
   "start_elevation_m": 1250.5399917602788,
   "end_elevation_m": 1253.21546596269,
   "min_gradient_pct": -7.618881625694485,
   "suppressed_max_gradient_pct": 32.04639610170716,
   "suppressed_location_m": [
    5635.0,
    5645.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.397988810469087,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 5168.0,
   "end_distance_m": 5188.0,
   "start_elevation_m": 1248.735868200596,
   "end_elevation_m": 1253.21546596269,
   "min_gradient_pct": -3.6415192779338668,
   "suppressed_max_gradient_pct": 23.85466009156403,
   "suppressed_location_m": [
    5623.0,
    5643.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.142863931077954,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 5171.0,
   "end_distance_m": 5196.0,
   "start_elevation_m": 1249.219834242357,
   "end_elevation_m": 1254.5055502251264,
   "min_gradient_pct": -2.632720125983724,
   "suppressed_max_gradient_pct": 22.373961122365472,
   "suppressed_location_m": [
    5618.0,
    5643.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.16320130941085,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 6342.0,
   "end_distance_m": 6392.0,
   "start_elevation_m": 1421.776118858796,
   "end_elevation_m": 1430.8577195135015,
   "min_gradient_pct": 1.8657272260616082,
   "suppressed_max_gradient_pct": 18.737693635391224,
   "suppressed_location_m": [
    5593.0,
    5643.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.915536335834986,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 6347.0,
   "end_distance_m": 6447.0,
   "start_elevation_m": 1422.5614656003477,
   "end_elevation_m": 1440.4770019361827,
   "min_gradient_pct": 4.491037408238526
  }
 ],
 "shape": {
  "ascent_concentration": 0.285,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 947.0,
  "shape_class": "sustained"
 },
 "length_m": 7033.655885212697,
 "start_elevation_m": 545.2444627978351,
 "end_elevation_m": 1509.0831456796986,
 "endpoint_gain_m": 963.8386828818635,
 "overall_gradient_pct": 13.70323909232186,
 "accumulated_ascent_m": 969.9703034703437,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 34.56212104811357,
   "start_distance_m": 2956.0,
   "end_distance_m": 2961.0,
   "midpoint_distance_m": 2958.5,
   "start_elevation_m": 915.9537794472893,
   "end_elevation_m": 917.681885499695,
   "start_xy": [
    2751128.8007787974,
    1209494.0263594068
   ],
   "end_xy": [
    2751132.4163754284,
    1209490.5727449225
   ]
  },
  "max_10m": {
   "gradient_pct": 26.754742024111238,
   "start_distance_m": 5178.0,
   "end_distance_m": 5188.0,
   "midpoint_distance_m": 5183.0,
   "start_elevation_m": 1250.5399917602788,
   "end_elevation_m": 1253.21546596269,
   "start_xy": [
    2751152.377450501,
    1208454.107693827
   ],
   "end_xy": [
    2751153.3464447893,
    1208444.1547524761
   ]
  },
  "max_20m": {
   "gradient_pct": 22.397988810469087,
   "start_distance_m": 5168.0,
   "end_distance_m": 5188.0,
   "midpoint_distance_m": 5178.0,
   "start_elevation_m": 1248.735868200596,
   "end_elevation_m": 1253.21546596269,
   "start_xy": [
    2751151.407465569,
    1208464.0605391003
   ],
   "end_xy": [
    2751153.3464447893,
    1208444.1547524761
   ]
  },
  "max_25m": {
   "gradient_pct": 21.142863931077954,
   "start_distance_m": 5171.0,
   "end_distance_m": 5196.0,
   "midpoint_distance_m": 5183.5,
   "start_elevation_m": 1249.219834242357,
   "end_elevation_m": 1254.5055502251264,
   "start_xy": [
    2751151.6984514017,
    1208461.0746845782
   ],
   "end_xy": [
    2751154.1223851787,
    1208436.1924716237
   ]
  },
  "max_50m": {
   "gradient_pct": 18.16320130941085,
   "start_distance_m": 6342.0,
   "end_distance_m": 6392.0,
   "midpoint_distance_m": 6367.0,
   "start_elevation_m": 1421.776118858796,
   "end_elevation_m": 1430.8577195135015,
   "start_xy": [
    2750817.624000523,
    1208091.5595511745
   ],
   "end_xy": [
    2750804.295016024,
    1208058.5746427819
   ]
  },
  "max_100m": {
   "gradient_pct": 17.915536335834986,
   "start_distance_m": 6347.0,
   "end_distance_m": 6447.0,
   "midpoint_distance_m": 6397.0,
   "start_elevation_m": 1422.5614656003477,
   "end_elevation_m": 1440.4770019361827,
   "start_xy": [
    2750813.9746009605,
    1208088.1416749754
   ],
   "end_xy": [
    2750855.071621989,
    1208043.5773147696
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -12.28225532922579,
   "start_distance_m": 2204.0,
   "end_distance_m": 2209.0,
   "midpoint_distance_m": 2206.5,
   "start_elevation_m": 818.1229882101578,
   "end_elevation_m": 817.5088754436965,
   "start_xy": [
    2751485.688630075,
    1209620.9126407031
   ],
   "end_xy": [
    2751490.423680783,
    1209619.306623515
   ]
  },
  "min_10m": {
   "gradient_pct": -7.618881625694485,
   "start_distance_m": 7023.0,
   "end_distance_m": 7033.0,
   "midpoint_distance_m": 7028.0,
   "start_elevation_m": 1509.899086869369,
   "end_elevation_m": 1509.1371987067996,
   "start_xy": [
    2750796.0690325634,
    1207667.8406485475
   ],
   "end_xy": [
    2750801.6117391107,
    1207674.9865718882
   ]
  },
  "min_20m": {
   "gradient_pct": -3.6415192779338668,
   "start_distance_m": 7013.0,
   "end_distance_m": 7033.0,
   "midpoint_distance_m": 7023.0,
   "start_elevation_m": 1509.8655025623864,
   "end_elevation_m": 1509.1371987067996,
   "start_xy": [
    2750786.3932437133,
    1207670.3663340295
   ],
   "end_xy": [
    2750801.6117391107,
    1207674.9865718882
   ]
  },
  "min_25m": {
   "gradient_pct": -2.632720125983724,
   "start_distance_m": 7008.0,
   "end_distance_m": 7033.0,
   "midpoint_distance_m": 7020.5,
   "start_elevation_m": 1509.7953787382955,
   "end_elevation_m": 1509.1371987067996,
   "start_xy": [
    2750781.5905792816,
    1207671.744277385
   ],
   "end_xy": [
    2750801.6117391107,
    1207674.9865718882
   ]
  },
  "min_50m": {
   "gradient_pct": 1.8657272260616082,
   "start_distance_m": 6983.0,
   "end_distance_m": 7033.0,
   "midpoint_distance_m": 7008.0,
   "start_elevation_m": 1508.2043350937688,
   "end_elevation_m": 1509.1371987067996,
   "start_xy": [
    2750758.0203853925,
    1207678.841111913
   ],
   "end_xy": [
    2750801.6117391107,
    1207674.9865718882
   ]
  },
  "min_100m": {
   "gradient_pct": 4.491037408238526,
   "start_distance_m": 6933.0,
   "end_distance_m": 7033.0,
   "midpoint_distance_m": 6983.0,
   "start_elevation_m": 1504.646161298561,
   "end_elevation_m": 1509.1371987067996,
   "start_xy": [
    2750736.246923078,
    1207682.9600707232
   ],
   "end_xy": [
    2750801.6117391107,
    1207674.9865718882
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 43.59791424777768,
   "start_distance_m": 380.0,
   "end_distance_m": 382.0,
   "midpoint_distance_m": 381.0,
   "start_elevation_m": 581.8852632717635,
   "end_elevation_m": 582.7572215567191,
   "start_xy": [
    2751446.5756046497,
    1210398.6692288704
   ],
   "end_xy": [
    2751447.546869264,
    1210396.9365383266
   ]
  },
  "max_3m": {
   "gradient_pct": 38.247539375553664,
   "start_distance_m": 2188.0,
   "end_distance_m": 2191.0,
   "midpoint_distance_m": 2189.5,
   "start_elevation_m": 815.1617807676246,
   "end_elevation_m": 816.3092069488912,
   "start_xy": [
    2751470.223394906,
    1209624.9882597553
   ],
   "end_xy": [
    2751473.1351341684,
    1209624.2659213855
   ]
  }
 },
 "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": 0.007,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.016,
   "windows_resited": [
    10.0,
    20.0,
    25.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 2,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 5618.0,
     "end_m": 5643.0,
     "raw_pct": 22.37,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 5623.0,
     "end_m": 5643.0,
     "raw_pct": 23.85,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 5635.0,
     "end_m": 5645.0,
     "raw_pct": 32.05,
     "reason": "hump+short-step"
    },
    {
     "window_m": 5.0,
     "start_m": 5636.0,
     "end_m": 5641.0,
     "raw_pct": 42.65,
     "reason": "hump+short-step"
    },
    {
     "window_m": 25.0,
     "start_m": 1900.0,
     "end_m": 1925.0,
     "raw_pct": 22.15,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 1904.0,
     "end_m": 1924.0,
     "raw_pct": 23.69,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 1905.0,
     "end_m": 1915.0,
     "raw_pct": 29.37,
     "reason": "hump"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "excluded_ranges_m": [
   [
    1898.0,
    1927.0
   ],
   [
    2621.0,
    2663.0
   ],
   [
    5117.0,
    5122.0
   ],
   [
    5616.0,
    5647.0
   ]
  ],
  "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:2056",
  "elevation_resolution_m": 0.5,
  "elevation_tiles": [
   "data/cache/ch/swissalti3d_2020_2750-1207_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2020_2750-1208_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2020_2750-1209_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2019_2750-1210_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2019_2751-1207_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2019_2751-1208_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2019_2751-1209_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2020_2751-1210_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-15T22:04:22+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/switzerland-2026-09-10.osm.pbf",
  "osm_snapshot": "2026-09-09T20:21:20Z",
  "run_id": "retro-260915-dogleg-all",
  "elevation_provider": "swisstopo swissALTI3D",
  "elevation_licence": "swisstopo open government data (OGD): free use, attribution '\u00a9 swisstopo' \u2014 https://www.swisstopo.admin.ch/en/terms-and-conditions",
  "elevation_dataset": "swissALTI3D 0.5 m DTM (Federal Office of Topography swisstopo)",
  "elevation_tile_ids": [
   "2750-1207",
   "2750-1208",
   "2750-1209",
   "2750-1210",
   "2751-1207",
   "2751-1208",
   "2751-1209",
   "2751-1210"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 no surface model (DSM or point cloud) registered for this coverage",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "structure_mask_ranges_m": [
   [
    2628.5,
    2658.5
   ],
   [
    2626.7,
    2656.7
   ]
  ],
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Vilters-Wangs",
  "county": "St. Gallen",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}