{
 "ocl_version": "0.1.0",
 "name": "Chemin de la Buchille",
 "slug": "chemin-de-la-buchille",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 27.800211940194686,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1151.0,
   "end_distance_m": 1153.0,
   "start_elevation_m": 973.4453471119219,
   "end_elevation_m": 974.0013513507258,
   "min_gradient_pct": -3.5667628722762856
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.278967826202916,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1149.0,
   "end_distance_m": 1152.0,
   "start_elevation_m": 972.9191853228983,
   "end_elevation_m": 973.7375543576844,
   "min_gradient_pct": -1.6089138596422952
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.190081500285487,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1149.0,
   "end_distance_m": 1154.0,
   "start_elevation_m": 972.9191853228983,
   "end_elevation_m": 974.2286893979126,
   "min_gradient_pct": 0.7337833639030578
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.026043914318507,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1182.0,
   "end_distance_m": 1192.0,
   "start_elevation_m": 979.0574424340327,
   "end_elevation_m": 981.4600468254646,
   "min_gradient_pct": 1.023859447511768
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.982859992605427,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1135.0,
   "end_distance_m": 1155.0,
   "start_elevation_m": 969.8312381874141,
   "end_elevation_m": 974.4278101859352,
   "min_gradient_pct": 1.2511902982510037
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.780436507604463,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1182.0,
   "end_distance_m": 1207.0,
   "start_elevation_m": 979.0574424340327,
   "end_elevation_m": 984.7525515609339,
   "min_gradient_pct": 1.3862058912372959
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.9890935004903,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1182.0,
   "end_distance_m": 1232.0,
   "start_elevation_m": 979.0574424340327,
   "end_elevation_m": 990.0519891842779,
   "min_gradient_pct": 1.7499575793954136
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.883396840571777,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1149.0,
   "end_distance_m": 1249.0,
   "start_elevation_m": 972.9191853228983,
   "end_elevation_m": 993.8025821634701,
   "min_gradient_pct": 2.5037339291970966
  }
 ],
 "shape": {
  "ascent_concentration": 0.385,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 402.0,
  "shape_class": "sustained"
 },
 "length_m": 1885.647671251908,
 "start_elevation_m": 846.6879800195201,
 "end_elevation_m": 1041.2669672812478,
 "endpoint_gain_m": 194.57898726172778,
 "overall_gradient_pct": 10.318947183412268,
 "accumulated_ascent_m": 194.90210051953716,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.190081500285487,
   "start_distance_m": 1149.0,
   "end_distance_m": 1154.0,
   "midpoint_distance_m": 1151.5,
   "start_elevation_m": 972.9191853228983,
   "end_elevation_m": 974.2286893979126,
   "start_xy": [
    2566989.6744233496,
    1171092.2694752447
   ],
   "end_xy": [
    2566989.457518591,
    1171087.2741822277
   ]
  },
  "max_10m": {
   "gradient_pct": 24.026043914318507,
   "start_distance_m": 1182.0,
   "end_distance_m": 1192.0,
   "midpoint_distance_m": 1187.0,
   "start_elevation_m": 979.0574424340327,
   "end_elevation_m": 981.4600468254646,
   "start_xy": [
    2566990.2057559844,
    1171059.3375278797
   ],
   "end_xy": [
    2566991.66236421,
    1171049.454239319
   ]
  },
  "max_20m": {
   "gradient_pct": 22.982859992605427,
   "start_distance_m": 1135.0,
   "end_distance_m": 1155.0,
   "midpoint_distance_m": 1145.0,
   "start_elevation_m": 969.8312381874141,
   "end_elevation_m": 974.4278101859352,
   "start_xy": [
    2566989.9487118176,
    1171106.2598226166
   ],
   "end_xy": [
    2566989.414137639,
    1171086.2751236244
   ]
  },
  "max_25m": {
   "gradient_pct": 22.780436507604463,
   "start_distance_m": 1182.0,
   "end_distance_m": 1207.0,
   "midpoint_distance_m": 1194.5,
   "start_elevation_m": 979.0574424340327,
   "end_elevation_m": 984.7525515609339,
   "start_xy": [
    2566990.2057559844,
    1171059.3375278797
   ],
   "end_xy": [
    2566995.512001174,
    1171034.9831498698
   ]
  },
  "max_50m": {
   "gradient_pct": 21.9890935004903,
   "start_distance_m": 1182.0,
   "end_distance_m": 1232.0,
   "midpoint_distance_m": 1207.0,
   "start_elevation_m": 979.0574424340327,
   "end_elevation_m": 990.0519891842779,
   "start_xy": [
    2566990.2057559844,
    1171059.3375278797
   ],
   "end_xy": [
    2567002.022757222,
    1171011.044053618
   ]
  },
  "max_100m": {
   "gradient_pct": 20.883396840571777,
   "start_distance_m": 1149.0,
   "end_distance_m": 1249.0,
   "midpoint_distance_m": 1199.0,
   "start_elevation_m": 972.9191853228983,
   "end_elevation_m": 993.8025821634701,
   "start_xy": [
    2566989.6744233496,
    1171092.2694752447
   ],
   "end_xy": [
    2567014.2316866526,
    1170999.5230448
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.7337833639030578,
   "start_distance_m": 1771.0,
   "end_distance_m": 1776.0,
   "midpoint_distance_m": 1773.5,
   "start_elevation_m": 1037.378381794792,
   "end_elevation_m": 1037.415070962987,
   "start_xy": [
    2567216.8371626353,
    1170633.8583417782
   ],
   "end_xy": [
    2567213.885242875,
    1170629.8227290947
   ]
  },
  "min_10m": {
   "gradient_pct": 1.023859447511768,
   "start_distance_m": 1769.0,
   "end_distance_m": 1779.0,
   "midpoint_distance_m": 1774.0,
   "start_elevation_m": 1037.355396188557,
   "end_elevation_m": 1037.4577821333082,
   "start_xy": [
    2567218.0179305393,
    1170635.4725868513
   ],
   "end_xy": [
    2567212.114091019,
    1170627.4013614848
   ]
  },
  "min_20m": {
   "gradient_pct": 1.2511902982510037,
   "start_distance_m": 1764.0,
   "end_distance_m": 1784.0,
   "midpoint_distance_m": 1774.0,
   "start_elevation_m": 1037.2805155184408,
   "end_elevation_m": 1037.530753578091,
   "start_xy": [
    2567220.9698502994,
    1170639.5081995348
   ],
   "end_xy": [
    2567209.162171259,
    1170623.3657488013
   ]
  },
  "min_25m": {
   "gradient_pct": 1.3862058912372959,
   "start_distance_m": 1764.0,
   "end_distance_m": 1789.0,
   "midpoint_distance_m": 1776.5,
   "start_elevation_m": 1037.2805155184408,
   "end_elevation_m": 1037.62706699125,
   "start_xy": [
    2567220.9698502994,
    1170639.5081995348
   ],
   "end_xy": [
    2567206.210251499,
    1170619.330136118
   ]
  },
  "min_50m": {
   "gradient_pct": 1.7499575793954136,
   "start_distance_m": 1743.0,
   "end_distance_m": 1793.0,
   "midpoint_distance_m": 1768.0,
   "start_elevation_m": 1036.8273155679567,
   "end_elevation_m": 1037.7022943576544,
   "start_xy": [
    2567233.3679132913,
    1170656.4577728051
   ],
   "end_xy": [
    2567203.848715691,
    1170616.1016459712
   ]
  },
  "min_100m": {
   "gradient_pct": 2.5037339291970966,
   "start_distance_m": 1722.0,
   "end_distance_m": 1822.0,
   "midpoint_distance_m": 1772.0,
   "start_elevation_m": 1036.1514171365907,
   "end_elevation_m": 1038.6551510657878,
   "start_xy": [
    2567245.7659762837,
    1170673.4073460752
   ],
   "end_xy": [
    2567190.290512728,
    1170590.8686227787
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 27.800211940194686,
   "start_distance_m": 1151.0,
   "end_distance_m": 1153.0,
   "midpoint_distance_m": 1152.0,
   "start_elevation_m": 973.4453471119219,
   "end_elevation_m": 974.0013513507258,
   "start_xy": [
    2566989.587661446,
    1171090.2713580378
   ],
   "end_xy": [
    2566989.5008995426,
    1171088.2732408312
   ]
  },
  "max_3m": {
   "gradient_pct": 27.278967826202916,
   "start_distance_m": 1149.0,
   "end_distance_m": 1152.0,
   "midpoint_distance_m": 1150.5,
   "start_elevation_m": 972.9191853228983,
   "end_elevation_m": 973.7375543576844,
   "start_xy": [
    2566989.6744233496,
    1171092.2694752447
   ],
   "end_xy": [
    2566989.5442804946,
    1171089.2722994345
   ]
  }
 },
 "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_start_earlier"
  ]
 },
 "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_2021_2566-1170_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2021_2566-1171_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2021_2566-1172_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2021_2567-1170_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2021_2567-1171_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2021_2567-1172_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-11T02:16:31+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": [
   "2566-1170",
   "2566-1171",
   "2566-1172",
   "2567-1170",
   "2567-1171",
   "2567-1172"
  ],
  "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": "Villorsonnens",
  "county": "Fribourg/Freiburg",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}