{
 "ocl_version": "0.1.0",
 "name": "Langwiesstrasse",
 "slug": "langwiesstrasse",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 34.99013433338973,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 247.0,
   "end_distance_m": 249.0,
   "start_elevation_m": 943.4892700703638,
   "end_elevation_m": 944.1890727570316,
   "min_gradient_pct": -25.206347952826036
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 33.61205682644292,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 245.0,
   "end_distance_m": 248.0,
   "start_elevation_m": 943.0412418651579,
   "end_elevation_m": 944.0496035699512,
   "min_gradient_pct": -16.86346576292408
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.483123667997916,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 583.0,
   "end_distance_m": 588.0,
   "start_elevation_m": 968.9618298182912,
   "end_elevation_m": 970.2359860016911,
   "min_gradient_pct": -11.914939046328072
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.83645064799566,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 581.0,
   "end_distance_m": 591.0,
   "start_elevation_m": 968.5378682302874,
   "end_elevation_m": 970.9215132950869,
   "min_gradient_pct": -6.98614933208205
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.454220275233524,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 573.0,
   "end_distance_m": 593.0,
   "start_elevation_m": 967.0217453886667,
   "end_elevation_m": 971.3125894437134,
   "min_gradient_pct": -6.318122966166584
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.915528417646783,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 570.0,
   "end_distance_m": 595.0,
   "start_elevation_m": 966.4777070314692,
   "end_elevation_m": 971.7065891358809,
   "min_gradient_pct": -6.11170122130352
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.8805742240163,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 543.0,
   "end_distance_m": 593.0,
   "start_elevation_m": 961.3723023317052,
   "end_elevation_m": 971.3125894437134,
   "min_gradient_pct": -5.489762223256321
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.955393755901127,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 500.0,
   "end_distance_m": 600.0,
   "start_elevation_m": 955.4971928991514,
   "end_elevation_m": 972.4525866550525,
   "min_gradient_pct": -1.8576692980369671
  }
 ],
 "shape": {
  "ascent_concentration": 0.332,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 144.0,
  "shape_class": "sustained"
 },
 "length_m": 602.9999999998996,
 "start_elevation_m": 918.4291611405547,
 "end_elevation_m": 972.5622003375305,
 "endpoint_gain_m": 54.1330391969758,
 "overall_gradient_pct": 8.977286765669124,
 "accumulated_ascent_m": 59.14139359505873,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.483123667997916,
   "start_distance_m": 583.0,
   "end_distance_m": 588.0,
   "midpoint_distance_m": 585.5,
   "start_elevation_m": 968.9618298182912,
   "end_elevation_m": 970.2359860016911,
   "start_xy": [
    2755093.6518680314,
    1201633.9069761017
   ],
   "end_xy": [
    2755090.3244663146,
    1201630.1771823876
   ]
  },
  "max_10m": {
   "gradient_pct": 23.83645064799566,
   "start_distance_m": 581.0,
   "end_distance_m": 591.0,
   "midpoint_distance_m": 586.0,
   "start_elevation_m": 968.5378682302874,
   "end_elevation_m": 970.9215132950869,
   "start_xy": [
    2755094.9785466082,
    1201635.4036129855
   ],
   "end_xy": [
    2755087.908011617,
    1201628.3993472275
   ]
  },
  "max_20m": {
   "gradient_pct": 21.454220275233524,
   "start_distance_m": 573.0,
   "end_distance_m": 593.0,
   "midpoint_distance_m": 583.0,
   "start_elevation_m": 967.0217453886667,
   "end_elevation_m": 971.3125894437134,
   "start_xy": [
    2755098.49422669,
    1201642.5513055455
   ],
   "end_xy": [
    2755086.2948270706,
    1201627.2171310494
   ]
  },
  "max_25m": {
   "gradient_pct": 20.915528417646783,
   "start_distance_m": 570.0,
   "end_distance_m": 595.0,
   "midpoint_distance_m": 582.5,
   "start_elevation_m": 966.4777070314692,
   "end_elevation_m": 971.7065891358809,
   "start_xy": [
    2755099.7191025694,
    1201645.289859426
   ],
   "end_xy": [
    2755084.682042489,
    1201626.0343698645
   ]
  },
  "max_50m": {
   "gradient_pct": 19.8805742240163,
   "start_distance_m": 543.0,
   "end_distance_m": 593.0,
   "midpoint_distance_m": 568.0,
   "start_elevation_m": 961.3723023317052,
   "end_elevation_m": 971.3125894437134,
   "start_xy": [
    2755110.7471552533,
    1201669.9349773198
   ],
   "end_xy": [
    2755086.2948270706,
    1201627.2171310494
   ]
  },
  "max_100m": {
   "gradient_pct": 16.955393755901127,
   "start_distance_m": 500.0,
   "end_distance_m": 600.0,
   "midpoint_distance_m": 550.0,
   "start_elevation_m": 955.4971928991514,
   "end_elevation_m": 972.4525866550525,
   "start_xy": [
    2755086.450058948,
    1201690.8017984016
   ],
   "end_xy": [
    2755080.650085182,
    1201623.0774601519
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -11.914939046328072,
   "start_distance_m": 237.0,
   "end_distance_m": 242.0,
   "midpoint_distance_m": 239.5,
   "start_elevation_m": 943.5298068807608,
   "end_elevation_m": 942.9340599284444,
   "start_xy": [
    2755072.878713514,
    1201903.6230899733
   ],
   "end_xy": [
    2755070.5975568844,
    1201899.1737842702
   ]
  },
  "min_10m": {
   "gradient_pct": -6.98614933208205,
   "start_distance_m": 419.0,
   "end_distance_m": 429.0,
   "midpoint_distance_m": 424.0,
   "start_elevation_m": 957.8482833494033,
   "end_elevation_m": 957.1496684161951,
   "start_xy": [
    2755029.5842666496,
    1201735.8230676043
   ],
   "end_xy": [
    2755027.6279736706,
    1201726.057601848
   ]
  },
  "min_20m": {
   "gradient_pct": -6.318122966166584,
   "start_distance_m": 447.0,
   "end_distance_m": 467.0,
   "midpoint_distance_m": 457.0,
   "start_elevation_m": 957.8449948024295,
   "end_elevation_m": 956.5813702091962,
   "start_xy": [
    2755040.1164344125,
    1201714.0199749416
   ],
   "end_xy": [
    2755056.119581845,
    1201702.3316663424
   ]
  },
  "min_25m": {
   "gradient_pct": -6.11170122130352,
   "start_distance_m": 453.0,
   "end_distance_m": 478.0,
   "midpoint_distance_m": 465.5,
   "start_elevation_m": 957.4867600721695,
   "end_elevation_m": 955.9588347668437,
   "start_xy": [
    2755045.339813383,
    1201711.0676622454
   ],
   "end_xy": [
    2755065.1677595084,
    1201696.21667751
   ]
  },
  "min_50m": {
   "gradient_pct": -5.489762223256321,
   "start_distance_m": 445.0,
   "end_distance_m": 495.0,
   "midpoint_distance_m": 470.0,
   "start_elevation_m": 957.9132584685794,
   "end_elevation_m": 955.1683773569513,
   "start_xy": [
    2755038.396176354,
    1201715.040127976
   ],
   "end_xy": [
    2755081.5399031104,
    1201691.7426094734
   ]
  },
  "min_100m": {
   "gradient_pct": -1.8576692980369671,
   "start_distance_m": 398.0,
   "end_distance_m": 498.0,
   "midpoint_distance_m": 448.0,
   "start_elevation_m": 957.1321182530575,
   "end_elevation_m": 955.2744489550205,
   "start_xy": [
    2755032.365167129,
    1201756.567621333
   ],
   "end_xy": [
    2755084.4821070964,
    1201691.1565769715
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 34.99013433338973,
   "start_distance_m": 247.0,
   "end_distance_m": 249.0,
   "midpoint_distance_m": 248.0,
   "start_elevation_m": 943.4892700703638,
   "end_elevation_m": 944.1890727570316,
   "start_xy": [
    2755068.3175979233,
    1201894.723864368
   ],
   "end_xy": [
    2755067.405614339,
    1201892.943896407
   ]
  },
  "max_3m": {
   "gradient_pct": 33.61205682644292,
   "start_distance_m": 245.0,
   "end_distance_m": 248.0,
   "midpoint_distance_m": 246.5,
   "start_elevation_m": 943.0412418651579,
   "end_elevation_m": 944.0496035699512,
   "start_xy": [
    2755069.229581508,
    1201896.5038323286
   ],
   "end_xy": [
    2755067.861606131,
    1201893.8338803875
   ]
  }
 },
 "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": [
   "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:2056",
  "elevation_resolution_m": 0.5,
  "elevation_tiles": [
   "data/cache/ch/swissalti3d_2019_2754-1201_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2019_2754-1202_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2023_2755-1201_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2019_2755-1202_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-11T06:47:54+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": [
   "2754-1201",
   "2754-1202",
   "2755-1201",
   "2755-1202"
  ],
  "route_base_cut_m": 241.2,
  "route_cut_m": 603.0,
  "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": "Pf\u00e4fers",
  "county": "St. Gallen",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 },
 "review_flags": [
  {
   "kind": "possible-bridge-or-hollow",
   "span_m": [
    427.0,
    583.0
   ],
   "status": "pending-human-review",
   "noted": "2026-09-21",
   "figure_adjusted": false
  }
 ]
}