{
 "ocl_version": "0.1.0",
 "name": "Bachtelstrasse",
 "slug": "bachtelstrasse-2",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 22.36697882611338,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 3152.0,
   "end_distance_m": 3154.0,
   "start_elevation_m": 943.3607565849534,
   "end_elevation_m": 943.8080961614756,
   "min_gradient_pct": -5.727306382760844,
   "suppressed_max_gradient_pct": 74.25859360396885,
   "suppressed_location_m": [
    3.0,
    5.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.91950663376853,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 3162.0,
   "end_distance_m": 3165.0,
   "start_elevation_m": 945.5055130706271,
   "end_elevation_m": 946.1630982696402,
   "min_gradient_pct": -5.63560396142672,
   "suppressed_max_gradient_pct": 66.51992613415511,
   "suppressed_location_m": [
    2.0,
    5.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.667376309967494,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 3169.0,
   "end_distance_m": 3174.0,
   "start_elevation_m": 946.9957052226404,
   "end_elevation_m": 948.0790740381387,
   "min_gradient_pct": -5.4580341145265265,
   "suppressed_max_gradient_pct": 53.21061366615595,
   "suppressed_location_m": [
    0.0,
    5.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.527192681746783,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 3156.0,
   "end_distance_m": 3166.0,
   "start_elevation_m": 944.2229944036902,
   "end_elevation_m": 946.3757136718649,
   "min_gradient_pct": -2.7132691107544815,
   "suppressed_max_gradient_pct": 30.105281842950262,
   "suppressed_location_m": [
    0.0,
    10.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.412567904219486,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 3152.0,
   "end_distance_m": 3172.0,
   "start_elevation_m": 943.3607565849534,
   "end_elevation_m": 947.6432701657973,
   "min_gradient_pct": -1.8894466324042014
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.40564540429068,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 3150.0,
   "end_distance_m": 3175.0,
   "start_elevation_m": 942.9380674622922,
   "end_elevation_m": 948.2894788133649,
   "min_gradient_pct": -1.5027065583062722
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.79628885796842,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 3134.0,
   "end_distance_m": 3184.0,
   "start_elevation_m": 939.6689200565615,
   "end_elevation_m": 950.0670644855458,
   "min_gradient_pct": -0.9529853213425667
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.511236422661,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2065.0,
   "end_distance_m": 2165.0,
   "start_elevation_m": 824.1801822332258,
   "end_elevation_m": 843.6914186558868,
   "min_gradient_pct": -0.8464652806550248
  }
 ],
 "shape": {
  "ascent_concentration": 0.345,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 228.0,
  "shape_class": "sustained"
 },
 "length_m": 4462.935839757839,
 "start_elevation_m": 671.3811090975269,
 "end_elevation_m": 1063.396082128895,
 "endpoint_gain_m": 392.0149730313681,
 "overall_gradient_pct": 8.783791367537091,
 "accumulated_ascent_m": 394.26852871931374,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.667376309967494,
   "start_distance_m": 3169.0,
   "end_distance_m": 3174.0,
   "midpoint_distance_m": 3171.5,
   "start_elevation_m": 946.9957052226404,
   "end_elevation_m": 948.0790740381387,
   "start_xy": [
    2709365.1572160413,
    1238714.0162806348
   ],
   "end_xy": [
    2709370.0186718483,
    1238715.1797835692
   ]
  },
  "max_10m": {
   "gradient_pct": 21.527192681746783,
   "start_distance_m": 3156.0,
   "end_distance_m": 3166.0,
   "midpoint_distance_m": 3161.0,
   "start_elevation_m": 944.2229944036902,
   "end_elevation_m": 946.3757136718649,
   "start_xy": [
    2709353.3501312085,
    1238708.8180910873
   ],
   "end_xy": [
    2709362.26572218,
    1238713.2167412376
   ]
  },
  "max_20m": {
   "gradient_pct": 21.412567904219486,
   "start_distance_m": 3152.0,
   "end_distance_m": 3172.0,
   "midpoint_distance_m": 3162.0,
   "start_elevation_m": 943.3607565849534,
   "end_elevation_m": 947.6432701657973,
   "start_xy": [
    2709350.345655248,
    1238706.200911753
   ],
   "end_xy": [
    2709368.067121194,
    1238714.7422335218
   ]
  },
  "max_25m": {
   "gradient_pct": 21.40564540429068,
   "start_distance_m": 3150.0,
   "end_distance_m": 3175.0,
   "midpoint_distance_m": 3162.5,
   "start_elevation_m": 942.9380674622922,
   "end_elevation_m": 948.2894788133649,
   "start_xy": [
    2709349.010708895,
    1238704.7139591768
   ],
   "end_xy": [
    2709370.9944471754,
    1238715.398558593
   ]
  },
  "max_50m": {
   "gradient_pct": 20.79628885796842,
   "start_distance_m": 3134.0,
   "end_distance_m": 3184.0,
   "midpoint_distance_m": 3159.0,
   "start_elevation_m": 939.6689200565615,
   "end_elevation_m": 950.0670644855458,
   "start_xy": [
    2709341.963277096,
    1238690.4107814408
   ],
   "end_xy": [
    2709379.9225221965,
    1238716.3828830144
   ]
  },
  "max_100m": {
   "gradient_pct": 19.511236422661,
   "start_distance_m": 2065.0,
   "end_distance_m": 2165.0,
   "midpoint_distance_m": 2115.0,
   "start_elevation_m": 824.1801822332258,
   "end_elevation_m": 843.6914186558868,
   "start_xy": [
    2709873.526751946,
    1238096.144288006
   ],
   "end_xy": [
    2709910.1639000415,
    1238187.0693435299
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -5.4580341145265265,
   "start_distance_m": 520.0,
   "end_distance_m": 525.0,
   "midpoint_distance_m": 522.5,
   "start_elevation_m": 716.2339132222855,
   "end_elevation_m": 715.9610115165592,
   "start_xy": [
    2709436.889237497,
    1237109.4783673976
   ],
   "end_xy": [
    2709437.537312414,
    1237114.4361893893
   ]
  },
  "min_10m": {
   "gradient_pct": -2.7132691107544815,
   "start_distance_m": 1598.0,
   "end_distance_m": 1608.0,
   "midpoint_distance_m": 1603.0,
   "start_elevation_m": 794.3360284632827,
   "end_elevation_m": 794.0647015522072,
   "start_xy": [
    2709512.179456838,
    1237994.244059979
   ],
   "end_xy": [
    2709520.0201147078,
    1238000.1855671483
   ]
  },
  "min_20m": {
   "gradient_pct": -1.8894466324042014,
   "start_distance_m": 1596.0,
   "end_distance_m": 1616.0,
   "midpoint_distance_m": 1606.0,
   "start_elevation_m": 794.3387565179119,
   "end_elevation_m": 793.960867191431,
   "start_xy": [
    2709510.9450590773,
    1237992.670445614
   ],
   "end_xy": [
    2709527.5534626907,
    1238001.0868255408
   ]
  },
  "min_25m": {
   "gradient_pct": -1.5027065583062722,
   "start_distance_m": 1591.0,
   "end_distance_m": 1616.0,
   "midpoint_distance_m": 1603.5,
   "start_elevation_m": 794.3365438310076,
   "end_elevation_m": 793.960867191431,
   "start_xy": [
    2709507.8590646773,
    1237988.7364097014
   ],
   "end_xy": [
    2709527.5534626907,
    1238001.0868255408
   ]
  },
  "min_50m": {
   "gradient_pct": -0.9529853213425667,
   "start_distance_m": 1637.0,
   "end_distance_m": 1687.0,
   "midpoint_distance_m": 1662.0,
   "start_elevation_m": 793.9761944484273,
   "end_elevation_m": 793.4997017877561,
   "start_xy": [
    2709538.7843135963,
    1237985.4923553409
   ],
   "end_xy": [
    2709575.0448560594,
    1237956.0736280167
   ]
  },
  "min_100m": {
   "gradient_pct": -0.8464652806550248,
   "start_distance_m": 1587.0,
   "end_distance_m": 1687.0,
   "midpoint_distance_m": 1637.0,
   "start_elevation_m": 794.3461670684111,
   "end_elevation_m": 793.4997017877561,
   "start_xy": [
    2709505.3902691565,
    1237985.5891809715
   ],
   "end_xy": [
    2709575.0448560594,
    1237956.0736280167
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 22.36697882611338,
   "start_distance_m": 3152.0,
   "end_distance_m": 3154.0,
   "midpoint_distance_m": 3153.0,
   "start_elevation_m": 943.3607565849534,
   "end_elevation_m": 943.8080961614756,
   "start_xy": [
    2709350.345655248,
    1238706.200911753
   ],
   "end_xy": [
    2709351.753957202,
    1238707.6130066335
   ]
  },
  "max_3m": {
   "gradient_pct": 21.91950663376853,
   "start_distance_m": 3162.0,
   "end_distance_m": 3165.0,
   "midpoint_distance_m": 3163.5,
   "start_elevation_m": 945.5055130706271,
   "end_elevation_m": 946.1630982696402,
   "start_xy": [
    2709358.5138214533,
    1238711.831504163
   ],
   "end_xy": [
    2709361.3247433663,
    1238712.879701663
   ]
  }
 },
 "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": 0.002,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    1.0,
    7.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier",
   "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_2709-1237_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2019_2709-1238_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2019_2709-1239_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-10T20:25:59+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": [
   "2709-1237",
   "2709-1238",
   "2709-1239"
  ],
  "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": "D\u00fcrnten",
  "county": "Z\u00fcrich",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}