{
 "ocl_version": "0.1.0",
 "name": "Unterbergstrasse",
 "slug": "unterbergstrasse",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 24.803012048187156,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 9568.0,
   "end_distance_m": 9570.0,
   "start_elevation_m": 1298.8861901306302,
   "end_elevation_m": 1299.382250371594,
   "min_gradient_pct": -16.46071633970223
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 16.13691500155407,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 9568.0,
   "end_distance_m": 9571.0,
   "start_elevation_m": 1298.8861901306302,
   "end_elevation_m": 1299.3702975806768,
   "min_gradient_pct": -9.059790116869712
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 13.510968498103466,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 3654.0,
   "end_distance_m": 3659.0,
   "start_elevation_m": 885.3331671490561,
   "end_elevation_m": 886.0087155739612,
   "min_gradient_pct": -3.5845096746925265
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 13.049024152219317,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 3654.0,
   "end_distance_m": 3664.0,
   "start_elevation_m": 885.3331671490561,
   "end_elevation_m": 886.638069564278,
   "min_gradient_pct": 0.5991127634592885
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 12.27136657429412,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 3699.0,
   "end_distance_m": 3719.0,
   "start_elevation_m": 890.542893176505,
   "end_elevation_m": 892.9971664913638,
   "min_gradient_pct": 2.351468451314531
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 12.190505050144111,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 3697.0,
   "end_distance_m": 3722.0,
   "start_elevation_m": 890.2858176059209,
   "end_elevation_m": 893.3334438684569,
   "min_gradient_pct": 2.6224808294882678
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 11.693611735082868,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 3684.0,
   "end_distance_m": 3734.0,
   "start_elevation_m": 888.8110503641244,
   "end_elevation_m": 894.6578562316658,
   "min_gradient_pct": 3.3319309610760683
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 11.4814985614953,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 3643.0,
   "end_distance_m": 3743.0,
   "start_elevation_m": 884.1042450617028,
   "end_elevation_m": 895.5857436231981,
   "min_gradient_pct": 3.4530756619919885
  }
 ],
 "shape": {
  "ascent_concentration": 0.328,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 203.0,
  "shape_class": "sustained"
 },
 "length_m": 9678.099999999953,
 "start_elevation_m": 572.6188179492196,
 "end_elevation_m": 1303.096332861987,
 "endpoint_gain_m": 730.4775149127674,
 "overall_gradient_pct": 7.547736796610606,
 "accumulated_ascent_m": 731.4324803901995,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 13.510968498103466,
   "start_distance_m": 3654.0,
   "end_distance_m": 3659.0,
   "midpoint_distance_m": 3656.5,
   "start_elevation_m": 885.3331671490561,
   "end_elevation_m": 886.0087155739612,
   "start_xy": [
    2596070.798983352,
    1228781.7340429435
   ],
   "end_xy": [
    2596075.197057445,
    1228784.094702493
   ]
  },
  "max_10m": {
   "gradient_pct": 13.049024152219317,
   "start_distance_m": 3654.0,
   "end_distance_m": 3664.0,
   "midpoint_distance_m": 3659.0,
   "start_elevation_m": 885.3331671490561,
   "end_elevation_m": 886.638069564278,
   "start_xy": [
    2596070.798983352,
    1228781.7340429435
   ],
   "end_xy": [
    2596079.464865787,
    1228786.6996612835
   ]
  },
  "max_20m": {
   "gradient_pct": 12.27136657429412,
   "start_distance_m": 3699.0,
   "end_distance_m": 3719.0,
   "midpoint_distance_m": 3709.0,
   "start_elevation_m": 890.542893176505,
   "end_elevation_m": 892.9971664913638,
   "start_xy": [
    2596107.8395948666,
    1228807.1708124124
   ],
   "end_xy": [
    2596124.4668189525,
    1228818.273203087
   ]
  },
  "max_25m": {
   "gradient_pct": 12.190505050144111,
   "start_distance_m": 3697.0,
   "end_distance_m": 3722.0,
   "midpoint_distance_m": 3709.5,
   "start_elevation_m": 890.2858176059209,
   "end_elevation_m": 893.3334438684569,
   "start_xy": [
    2596106.225371243,
    1228805.9906519763
   ],
   "end_xy": [
    2596126.762858199,
    1228820.2037270886
   ]
  },
  "max_50m": {
   "gradient_pct": 11.693611735082868,
   "start_distance_m": 3684.0,
   "end_distance_m": 3734.0,
   "midpoint_distance_m": 3709.0,
   "start_elevation_m": 888.8110503641244,
   "end_elevation_m": 894.6578562316658,
   "start_xy": [
    2596095.827978533,
    1228798.188624955
   ],
   "end_xy": [
    2596133.195372789,
    1228830.1365987125
   ]
  },
  "max_100m": {
   "gradient_pct": 11.4814985614953,
   "start_distance_m": 3643.0,
   "end_distance_m": 3743.0,
   "midpoint_distance_m": 3693.0,
   "start_elevation_m": 884.1042450617028,
   "end_elevation_m": 895.5857436231981,
   "start_xy": [
    2596060.7544942303,
    1228777.2498243658
   ],
   "end_xy": [
    2596135.6995223793,
    1228838.7761803907
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -3.5845096746925265,
   "start_distance_m": 9563.0,
   "end_distance_m": 9568.0,
   "midpoint_distance_m": 9565.5,
   "start_elevation_m": 1299.0654156143648,
   "end_elevation_m": 1298.8861901306302,
   "start_xy": [
    2595631.9048029496,
    1230086.8202173132
   ],
   "end_xy": [
    2595630.7336921715,
    1230091.6803627515
   ]
  },
  "min_10m": {
   "gradient_pct": 0.5991127634592885,
   "start_distance_m": 9558.0,
   "end_distance_m": 9568.0,
   "midpoint_distance_m": 9563.0,
   "start_elevation_m": 1298.8262788542843,
   "end_elevation_m": 1298.8861901306302,
   "start_xy": [
    2595633.2355517396,
    1230082.000564373
   ],
   "end_xy": [
    2595630.7336921715,
    1230091.6803627515
   ]
  },
  "min_20m": {
   "gradient_pct": 2.351468451314531,
   "start_distance_m": 9658.0,
   "end_distance_m": 9678.0,
   "midpoint_distance_m": 9668.0,
   "start_elevation_m": 1302.6187778964513,
   "end_elevation_m": 1303.0890715867142,
   "start_xy": [
    2595613.3082038346,
    1230179.9347399005
   ],
   "end_xy": [
    2595616.792862377,
    1230199.4438364825
   ]
  },
  "min_25m": {
   "gradient_pct": 2.6224808294882678,
   "start_distance_m": 9653.0,
   "end_distance_m": 9678.0,
   "midpoint_distance_m": 9665.5,
   "start_elevation_m": 1302.4334513793422,
   "end_elevation_m": 1303.0890715867142,
   "start_xy": [
    2595613.777720499,
    1230174.960813998
   ],
   "end_xy": [
    2595616.792862377,
    1230199.4438364825
   ]
  },
  "min_50m": {
   "gradient_pct": 3.3319309610760683,
   "start_distance_m": 9628.0,
   "end_distance_m": 9678.0,
   "midpoint_distance_m": 9653.0,
   "start_elevation_m": 1301.4231061061762,
   "end_elevation_m": 1303.0890715867142,
   "start_xy": [
    2595618.4522278695,
    1230150.4047220505
   ],
   "end_xy": [
    2595616.792862377,
    1230199.4438364825
   ]
  },
  "min_100m": {
   "gradient_pct": 3.4530756619919885,
   "start_distance_m": 9578.0,
   "end_distance_m": 9678.0,
   "midpoint_distance_m": 9628.0,
   "start_elevation_m": 1299.6359959247222,
   "end_elevation_m": 1303.0890715867142,
   "start_xy": [
    2595628.849399677,
    1230101.5011889213
   ],
   "end_xy": [
    2595616.792862377,
    1230199.4438364825
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 24.803012048187156,
   "start_distance_m": 9568.0,
   "end_distance_m": 9570.0,
   "midpoint_distance_m": 9569.0,
   "start_elevation_m": 1298.8861901306302,
   "end_elevation_m": 1299.382250371594,
   "start_xy": [
    2595630.7336921715,
    1230091.6803627515
   ],
   "end_xy": [
    2595630.3513505026,
    1230093.6434457784
   ]
  },
  "max_3m": {
   "gradient_pct": 16.13691500155407,
   "start_distance_m": 9568.0,
   "end_distance_m": 9571.0,
   "midpoint_distance_m": 9569.5,
   "start_elevation_m": 1298.8861901306302,
   "end_elevation_m": 1299.3702975806768,
   "start_xy": [
    2595630.7336921715,
    1230091.6803627515
   ],
   "end_xy": [
    2595630.163319287,
    1230094.6256088312
   ]
  }
 },
 "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": {
  "review": [],
  "extent": []
 },
 "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_2025_2594-1227_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2025_2594-1228_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2025_2594-1229_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2025_2595-1227_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2025_2595-1228_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2025_2595-1229_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2025_2595-1230_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2025_2596-1228_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2025_2596-1229_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2025_2596-1230_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-11T06:55:06+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/switzerland-2026-09-10-batch.osm.pbf",
  "osm_snapshot": "",
  "run_id": "ch-run7-extent-260911",
  "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": [
   "2594-1227",
   "2594-1228",
   "2594-1229",
   "2595-1227",
   "2595-1228",
   "2595-1229",
   "2595-1230",
   "2596-1228",
   "2596-1229",
   "2596-1230"
  ],
  "route_cut_m": 9678.1,
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 no surface model (DSM or point cloud) registered for this coverage",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Grenchen",
  "county": "Solothurn",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}