{
 "ocl_version": "0.1.0",
 "name": "Unterwilenstrasse",
 "slug": "unterwilenstrasse",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 22.6112604104884,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 32.0,
   "end_distance_m": 34.0,
   "start_elevation_m": 440.1033897013283,
   "end_elevation_m": 440.55561490953806,
   "min_gradient_pct": -9.008284487566698
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.91185426966058,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 31.0,
   "end_distance_m": 34.0,
   "start_elevation_m": 439.89825928144825,
   "end_elevation_m": 440.55561490953806,
   "min_gradient_pct": -8.41223967222883
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.534660557633742,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 28.0,
   "end_distance_m": 33.0,
   "start_elevation_m": 439.2424474956427,
   "end_elevation_m": 440.3191805235244,
   "min_gradient_pct": -8.135976807334373
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.90640112470794,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 28.0,
   "end_distance_m": 38.0,
   "start_elevation_m": 439.2424474956427,
   "end_elevation_m": 441.3330876081135,
   "min_gradient_pct": -7.479154141940398
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.233556733392675,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 567.0,
   "end_distance_m": 587.0,
   "start_elevation_m": 512.4836623817572,
   "end_elevation_m": 516.5303737284357,
   "min_gradient_pct": -5.8808175408103125
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.013974461666294,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 562.0,
   "end_distance_m": 587.0,
   "start_elevation_m": 511.52688011301916,
   "end_elevation_m": 516.5303737284357,
   "min_gradient_pct": -4.696613756647366
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.090417106704763,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 563.0,
   "end_distance_m": 613.0,
   "start_elevation_m": 511.71005161598896,
   "end_elevation_m": 521.2552601693413,
   "min_gradient_pct": -1.7212062801511365
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.401930654755063,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 520.0,
   "end_distance_m": 620.0,
   "start_elevation_m": 505.0430359621275,
   "end_elevation_m": 522.4449666168825,
   "min_gradient_pct": 2.7869081384442325
  }
 ],
 "shape": {
  "ascent_concentration": 0.314,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 184.0,
  "shape_class": "sustained"
 },
 "length_m": 713.3506616166453,
 "start_elevation_m": 437.26810456531535,
 "end_elevation_m": 524.0517260468719,
 "endpoint_gain_m": 86.78362148155651,
 "overall_gradient_pct": 12.165632717698948,
 "accumulated_ascent_m": 88.49984341219113,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.534660557633742,
   "start_distance_m": 28.0,
   "end_distance_m": 33.0,
   "midpoint_distance_m": 30.5,
   "start_elevation_m": 439.2424474956427,
   "end_elevation_m": 440.3191805235244,
   "start_xy": [
    2678414.952270344,
    1208229.6710587225
   ],
   "end_xy": [
    2678417.584744701,
    1208225.4201671977
   ]
  },
  "max_10m": {
   "gradient_pct": 20.90640112470794,
   "start_distance_m": 28.0,
   "end_distance_m": 38.0,
   "midpoint_distance_m": 33.0,
   "start_elevation_m": 439.2424474956427,
   "end_elevation_m": 441.3330876081135,
   "start_xy": [
    2678414.952270344,
    1208229.6710587225
   ],
   "end_xy": [
    2678420.550347402,
    1208221.4119696605
   ]
  },
  "max_20m": {
   "gradient_pct": 20.233556733392675,
   "start_distance_m": 567.0,
   "end_distance_m": 587.0,
   "midpoint_distance_m": 577.0,
   "start_elevation_m": 512.4836623817572,
   "end_elevation_m": 516.5303737284357,
   "start_xy": [
    2678589.474650808,
    1208220.66156882
   ],
   "end_xy": [
    2678607.3985480843,
    1208214.147463829
   ]
  },
  "max_25m": {
   "gradient_pct": 20.013974461666294,
   "start_distance_m": 562.0,
   "end_distance_m": 587.0,
   "midpoint_distance_m": 574.5,
   "start_elevation_m": 511.52688011301916,
   "end_elevation_m": 516.5303737284357,
   "start_xy": [
    2678585.5037076366,
    1208223.699925338
   ],
   "end_xy": [
    2678607.3985480843,
    1208214.147463829
   ]
  },
  "max_50m": {
   "gradient_pct": 19.090417106704763,
   "start_distance_m": 563.0,
   "end_distance_m": 613.0,
   "midpoint_distance_m": 588.0,
   "start_elevation_m": 511.71005161598896,
   "end_elevation_m": 521.2552601693413,
   "start_xy": [
    2678586.297896271,
    1208223.0922540342
   ],
   "end_xy": [
    2678602.6700833323,
    1208235.8483736196
   ]
  },
  "max_100m": {
   "gradient_pct": 17.401930654755063,
   "start_distance_m": 520.0,
   "end_distance_m": 620.0,
   "midpoint_distance_m": 570.0,
   "start_elevation_m": 505.0430359621275,
   "end_elevation_m": 522.4449666168825,
   "start_xy": [
    2678552.201785749,
    1208249.2173424482
   ],
   "end_xy": [
    2678598.2774666655,
    1208241.2942536515
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -8.135976807334373,
   "start_distance_m": 644.0,
   "end_distance_m": 649.0,
   "midpoint_distance_m": 646.5,
   "start_elevation_m": 523.877883178379,
   "end_elevation_m": 523.4710843380122,
   "start_xy": [
    2678581.4094972685,
    1208258.3188566307
   ],
   "end_xy": [
    2678577.918876299,
    1208261.8967467446
   ]
  },
  "min_10m": {
   "gradient_pct": -7.479154141940398,
   "start_distance_m": 644.0,
   "end_distance_m": 654.0,
   "midpoint_distance_m": 649.0,
   "start_elevation_m": 523.877883178379,
   "end_elevation_m": 523.1299677641849,
   "start_xy": [
    2678581.4094972685,
    1208258.3188566307
   ],
   "end_xy": [
    2678574.477299786,
    1208265.5238049333
   ]
  },
  "min_20m": {
   "gradient_pct": -5.8808175408103125,
   "start_distance_m": 638.0,
   "end_distance_m": 658.0,
   "midpoint_distance_m": 648.0,
   "start_elevation_m": 524.1586713702688,
   "end_elevation_m": 522.9825078621068,
   "start_xy": [
    2678585.7723497404,
    1208254.1999346467
   ],
   "end_xy": [
    2678571.7240385753,
    1208268.425451484
   ]
  },
  "min_25m": {
   "gradient_pct": -4.696613756647366,
   "start_distance_m": 637.0,
   "end_distance_m": 662.0,
   "midpoint_distance_m": 649.5,
   "start_elevation_m": 524.152857041248,
   "end_elevation_m": 522.9787036020862,
   "start_xy": [
    2678586.4994918187,
    1208253.5134476493
   ],
   "end_xy": [
    2678569.053833781,
    1208271.3953113533
   ]
  },
  "min_50m": {
   "gradient_pct": -1.7212062801511365,
   "start_distance_m": 636.0,
   "end_distance_m": 686.0,
   "midpoint_distance_m": 661.0,
   "start_elevation_m": 524.1468765206043,
   "end_elevation_m": 523.2862733805288,
   "start_xy": [
    2678587.2266338975,
    1208252.826960652
   ],
   "end_xy": [
    2678554.931640143,
    1208290.7686338688
   ]
  },
  "min_100m": {
   "gradient_pct": 2.7869081384442325,
   "start_distance_m": 613.0,
   "end_distance_m": 713.0,
   "midpoint_distance_m": 663.0,
   "start_elevation_m": 521.2552601693413,
   "end_elevation_m": 524.0421683077856,
   "start_xy": [
    2678602.6700833323,
    1208235.8483736196
   ],
   "end_xy": [
    2678535.040954111,
    1208309.024554789
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 22.6112604104884,
   "start_distance_m": 32.0,
   "end_distance_m": 34.0,
   "midpoint_distance_m": 33.0,
   "start_elevation_m": 440.1033897013283,
   "end_elevation_m": 440.55561490953806,
   "start_xy": [
    2678417.05824983,
    1208226.2703455025
   ],
   "end_xy": [
    2678418.111239573,
    1208224.5699888926
   ]
  },
  "max_3m": {
   "gradient_pct": 21.91185426966058,
   "start_distance_m": 31.0,
   "end_distance_m": 34.0,
   "midpoint_distance_m": 32.5,
   "start_elevation_m": 439.89825928144825,
   "end_elevation_m": 440.55561490953806,
   "start_xy": [
    2678416.5317549584,
    1208227.1205238076
   ],
   "end_xy": [
    2678418.111239573,
    1208224.5699888926
   ]
  }
 },
 "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_2022_2678-1208_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-10T19:47:58+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-run6-260910",
  "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": [
   "2678-1208"
  ],
  "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": "Vitznau",
  "county": "Luzern",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}