{
 "ocl_version": "0.1.0",
 "name": "Sonnhaldestrasse",
 "slug": "sonnhaldestrasse-2",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 23.79571517520276,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 445.0,
   "end_distance_m": 447.0,
   "start_elevation_m": 553.8960441887912,
   "end_elevation_m": 554.3719584922952,
   "min_gradient_pct": -8.729064651535623
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 23.08683082032985,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 438.0,
   "end_distance_m": 441.0,
   "start_elevation_m": 552.3613431992685,
   "end_elevation_m": 553.0539481238784,
   "min_gradient_pct": -8.759345565067633
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.582126080844773,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 438.0,
   "end_distance_m": 443.0,
   "start_elevation_m": 552.3613431992685,
   "end_elevation_m": 553.4904495033107,
   "min_gradient_pct": -8.655668365255451
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.103479352241493,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 437.0,
   "end_distance_m": 447.0,
   "start_elevation_m": 552.1616105570711,
   "end_elevation_m": 554.3719584922952,
   "min_gradient_pct": -7.389797285143231
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.37858680058912,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 427.0,
   "end_distance_m": 447.0,
   "start_elevation_m": 550.0962411321774,
   "end_elevation_m": 554.3719584922952,
   "min_gradient_pct": -4.689904456313911
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.760743156423814,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 422.0,
   "end_distance_m": 447.0,
   "start_elevation_m": 549.1817727031893,
   "end_elevation_m": 554.3719584922952,
   "min_gradient_pct": -3.818359835507181
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.390530899279383,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 407.0,
   "end_distance_m": 457.0,
   "start_elevation_m": 546.7391008801569,
   "end_elevation_m": 555.9343663297966,
   "min_gradient_pct": -1.5894169558803242
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.901886766004395,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 412.0,
   "end_distance_m": 512.0,
   "start_elevation_m": 547.4333521851672,
   "end_elevation_m": 565.3352389511716,
   "min_gradient_pct": -0.35383055107678274
  }
 ],
 "shape": {
  "ascent_concentration": 0.357,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 224.0,
  "shape_class": "sustained"
 },
 "length_m": 512.363869585716,
 "start_elevation_m": 508.57366335559715,
 "end_elevation_m": 565.39854288576,
 "endpoint_gain_m": 56.82487953016283,
 "overall_gradient_pct": 11.090727294278174,
 "accumulated_ascent_m": 58.082741571510155,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.582126080844773,
   "start_distance_m": 438.0,
   "end_distance_m": 443.0,
   "midpoint_distance_m": 440.5,
   "start_elevation_m": 552.3613431992685,
   "end_elevation_m": 553.4904495033107,
   "start_xy": [
    2684783.6322453083,
    1212197.0758433267
   ],
   "end_xy": [
    2684788.3752940986,
    1212195.6945184947
   ]
  },
  "max_10m": {
   "gradient_pct": 22.103479352241493,
   "start_distance_m": 437.0,
   "end_distance_m": 447.0,
   "midpoint_distance_m": 442.0,
   "start_elevation_m": 552.1616105570711,
   "end_elevation_m": 554.3719584922952,
   "start_xy": [
    2684782.78599759,
    1212197.608632966
   ],
   "end_xy": [
    2684792.297571839,
    1212194.9098291763
   ]
  },
  "max_20m": {
   "gradient_pct": 21.37858680058912,
   "start_distance_m": 427.0,
   "end_distance_m": 447.0,
   "midpoint_distance_m": 437.0,
   "start_elevation_m": 550.0962411321774,
   "end_elevation_m": 554.3719584922952,
   "start_xy": [
    2684774.3235204085,
    1212202.936529357
   ],
   "end_xy": [
    2684792.297571839,
    1212194.9098291763
   ]
  },
  "max_25m": {
   "gradient_pct": 20.760743156423814,
   "start_distance_m": 422.0,
   "end_distance_m": 447.0,
   "midpoint_distance_m": 434.5,
   "start_elevation_m": 549.1817727031893,
   "end_elevation_m": 554.3719584922952,
   "start_xy": [
    2684770.092281818,
    1212205.6004775525
   ],
   "end_xy": [
    2684792.297571839,
    1212194.9098291763
   ]
  },
  "max_50m": {
   "gradient_pct": 18.390530899279383,
   "start_distance_m": 407.0,
   "end_distance_m": 457.0,
   "midpoint_distance_m": 432.0,
   "start_elevation_m": 546.7391008801569,
   "end_elevation_m": 555.9343663297966,
   "start_xy": [
    2684758.9014841197,
    1212215.544836006
   ],
   "end_xy": [
    2684802.0886980374,
    1212195.9789362922
   ]
  },
  "max_100m": {
   "gradient_pct": 17.901886766004395,
   "start_distance_m": 412.0,
   "end_distance_m": 512.0,
   "midpoint_distance_m": 462.0,
   "start_elevation_m": 547.4333521851672,
   "end_elevation_m": 565.3352389511716,
   "start_xy": [
    2684762.5594822713,
    1212212.1361633134
   ],
   "end_xy": [
    2684808.6346167666,
    1212246.087529125
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -8.655668365255451,
   "start_distance_m": 9.0,
   "end_distance_m": 14.0,
   "midpoint_distance_m": 11.5,
   "start_elevation_m": 508.5827205599765,
   "end_elevation_m": 508.14993714171374,
   "start_xy": [
    2684753.205081257,
    1211871.3965993007
   ],
   "end_xy": [
    2684756.8620098596,
    1211874.8064194124
   ]
  },
  "min_10m": {
   "gradient_pct": -7.389797285143231,
   "start_distance_m": 9.0,
   "end_distance_m": 19.0,
   "midpoint_distance_m": 14.0,
   "start_elevation_m": 508.5827205599765,
   "end_elevation_m": 507.8437408314622,
   "start_xy": [
    2684753.205081257,
    1211871.3965993007
   ],
   "end_xy": [
    2684760.5189384627,
    1211878.216239524
   ]
  },
  "min_20m": {
   "gradient_pct": -4.689904456313911,
   "start_distance_m": 6.0,
   "end_distance_m": 26.0,
   "midpoint_distance_m": 16.0,
   "start_elevation_m": 508.62371124456376,
   "end_elevation_m": 507.685730353301,
   "start_xy": [
    2684751.0109240953,
    1211869.3507072337
   ],
   "end_xy": [
    2684765.6386385066,
    1211882.9899876802
   ]
  },
  "min_25m": {
   "gradient_pct": -3.818359835507181,
   "start_distance_m": 7.0,
   "end_distance_m": 32.0,
   "midpoint_distance_m": 19.5,
   "start_elevation_m": 508.6211666621282,
   "end_elevation_m": 507.6665767032514,
   "start_xy": [
    2684751.7423098157,
    1211870.032671256
   ],
   "end_xy": [
    2684770.02695283,
    1211887.0817718143
   ]
  },
  "min_50m": {
   "gradient_pct": -1.5894169558803242,
   "start_distance_m": 7.0,
   "end_distance_m": 57.0,
   "midpoint_distance_m": 32.0,
   "start_elevation_m": 508.6211666621282,
   "end_elevation_m": 507.826458184188,
   "start_xy": [
    2684751.7423098157,
    1211870.032671256
   ],
   "end_xy": [
    2684787.9467246914,
    1211904.513525777
   ]
  },
  "min_100m": {
   "gradient_pct": -0.35383055107678274,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 508.57366335559715,
   "end_elevation_m": 508.21983280452037,
   "start_xy": [
    2684747.887,
    1211864.313
   ],
   "end_xy": [
    2684805.8997668284,
    1211941.921741799
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 23.79571517520276,
   "start_distance_m": 445.0,
   "end_distance_m": 447.0,
   "midpoint_distance_m": 446.0,
   "start_elevation_m": 553.8960441887912,
   "end_elevation_m": 554.3719584922952,
   "start_xy": [
    2684790.3364329687,
    1212195.3021738355
   ],
   "end_xy": [
    2684792.297571839,
    1212194.9098291763
   ]
  },
  "max_3m": {
   "gradient_pct": 23.08683082032985,
   "start_distance_m": 438.0,
   "end_distance_m": 441.0,
   "midpoint_distance_m": 439.5,
   "start_elevation_m": 552.3613431992685,
   "end_elevation_m": 553.0539481238784,
   "start_xy": [
    2684783.6322453083,
    1212197.0758433267
   ],
   "end_xy": [
    2684786.4141552285,
    1212196.0868631538
   ]
  }
 },
 "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": [
   "descends_at_start",
   "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_2020_2684-1211_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2019_2684-1212_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-11T05:04:06+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-run7-260911",
  "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": [
   "2684-1211",
   "2684-1212"
  ],
  "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": "Arth",
  "county": "Schwyz",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}