{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (46.9989, 7.7473)",
 "slug": "discovered-lane-46-9989-7-7473",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 26.745870641161673,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1177.0,
   "end_distance_m": 1179.0,
   "start_elevation_m": 797.0244196921401,
   "end_elevation_m": 797.5593371049633,
   "min_gradient_pct": -12.933140012290778
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 26.046207750619033,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1027.0,
   "end_distance_m": 1030.0,
   "start_elevation_m": 767.1223641956772,
   "end_elevation_m": 767.9037504281957,
   "min_gradient_pct": -11.031292527479764
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.719268381321854,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1027.0,
   "end_distance_m": 1032.0,
   "start_elevation_m": 767.1223641956772,
   "end_elevation_m": 768.4083276147433,
   "min_gradient_pct": -10.022691941715038
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.166024439354032,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 967.0,
   "end_distance_m": 977.0,
   "start_elevation_m": 756.7053039379731,
   "end_elevation_m": 759.1219063819085,
   "min_gradient_pct": -9.589342203844353
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.78336203895799,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 965.0,
   "end_distance_m": 985.0,
   "start_elevation_m": 756.2559655147494,
   "end_elevation_m": 761.012637922541,
   "min_gradient_pct": -8.561984103921532
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.68111638044229,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1155.0,
   "end_distance_m": 1180.0,
   "start_elevation_m": 792.0981347567892,
   "end_elevation_m": 797.7684138518998,
   "min_gradient_pct": -8.49241134004069
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 22.242263520672623,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1130.0,
   "end_distance_m": 1180.0,
   "start_elevation_m": 786.6472820915635,
   "end_elevation_m": 797.7684138518998,
   "min_gradient_pct": -8.242224779875869
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 21.27015634889426,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1099.0,
   "end_distance_m": 1199.0,
   "start_elevation_m": 780.4252919195458,
   "end_elevation_m": 801.69544826844,
   "min_gradient_pct": -8.018060092895439
  }
 ],
 "shape": {
  "ascent_concentration": 0.525,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 423.0,
  "shape_class": "stepped"
 },
 "length_m": 1438.1089035212726,
 "start_elevation_m": 729.8631791132825,
 "end_elevation_m": 836.5678729604264,
 "endpoint_gain_m": 106.70469384714386,
 "overall_gradient_pct": 7.419792310990687,
 "accumulated_ascent_m": 126.24996002552825,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.719268381321854,
   "start_distance_m": 1027.0,
   "end_distance_m": 1032.0,
   "midpoint_distance_m": 1029.5,
   "start_elevation_m": 767.1223641956772,
   "end_elevation_m": 768.4083276147433,
   "start_xy": [
    2623562.35064649,
    1205422.223503751
   ],
   "end_xy": [
    2623564.652686933,
    1205417.7849668525
   ]
  },
  "max_10m": {
   "gradient_pct": 24.166024439354032,
   "start_distance_m": 967.0,
   "end_distance_m": 977.0,
   "midpoint_distance_m": 972.0,
   "start_elevation_m": 756.7053039379731,
   "end_elevation_m": 759.1219063819085,
   "start_xy": [
    2623529.1770110754,
    1205471.602391587
   ],
   "end_xy": [
    2623533.897074087,
    1205462.7864398425
   ]
  },
  "max_20m": {
   "gradient_pct": 23.78336203895799,
   "start_distance_m": 965.0,
   "end_distance_m": 985.0,
   "midpoint_distance_m": 975.0,
   "start_elevation_m": 756.2559655147494,
   "end_elevation_m": 761.012637922541,
   "start_xy": [
    2623528.2329984726,
    1205473.365581936
   ],
   "end_xy": [
    2623538.5770487683,
    1205456.299115198
   ]
  },
  "max_25m": {
   "gradient_pct": 22.68111638044229,
   "start_distance_m": 1155.0,
   "end_distance_m": 1180.0,
   "midpoint_distance_m": 1167.5,
   "start_elevation_m": 792.0981347567892,
   "end_elevation_m": 797.7684138518998,
   "start_xy": [
    2623592.5295509035,
    1205299.6592937415
   ],
   "end_xy": [
    2623609.103309032,
    1205280.9427090776
   ]
  },
  "max_50m": {
   "gradient_pct": 22.242263520672623,
   "start_distance_m": 1130.0,
   "end_distance_m": 1180.0,
   "midpoint_distance_m": 1155.0,
   "start_elevation_m": 786.6472820915635,
   "end_elevation_m": 797.7684138518998,
   "start_xy": [
    2623582.8612186722,
    1205322.289984074
   ],
   "end_xy": [
    2623609.103309032,
    1205280.9427090776
   ]
  },
  "max_100m": {
   "gradient_pct": 21.27015634889426,
   "start_distance_m": 1099.0,
   "end_distance_m": 1199.0,
   "midpoint_distance_m": 1149.0,
   "start_elevation_m": 780.4252919195458,
   "end_elevation_m": 801.69544826844,
   "start_xy": [
    2623581.635816141,
    1205353.2657550676
   ],
   "end_xy": [
    2623624.213636678,
    1205269.5586494522
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -10.022691941715038,
   "start_distance_m": 16.0,
   "end_distance_m": 21.0,
   "midpoint_distance_m": 18.5,
   "start_elevation_m": 728.8245385056467,
   "end_elevation_m": 728.323403908561,
   "start_xy": [
    2623199.030364456,
    1204892.4861320038
   ],
   "end_xy": [
    2623203.65281038,
    1204894.3921733687
   ]
  },
  "min_10m": {
   "gradient_pct": -9.589342203844353,
   "start_distance_m": 85.0,
   "end_distance_m": 95.0,
   "midpoint_distance_m": 90.0,
   "start_elevation_m": 723.4382789394988,
   "end_elevation_m": 722.4793447191144,
   "start_xy": [
    2623263.726719387,
    1204915.2142523464
   ],
   "end_xy": [
    2623273.670017266,
    1204914.2213748703
   ]
  },
  "min_20m": {
   "gradient_pct": -8.561984103921532,
   "start_distance_m": 80.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 90.0,
   "start_elevation_m": 723.8138303949445,
   "end_elevation_m": 722.1014335741602,
   "start_xy": [
    2623258.741909188,
    1204914.9803737858
   ],
   "end_xy": [
    2623278.5911605107,
    1204913.3368698289
   ]
  },
  "min_25m": {
   "gradient_pct": -8.49241134004069,
   "start_distance_m": 70.0,
   "end_distance_m": 95.0,
   "midpoint_distance_m": 82.5,
   "start_elevation_m": 724.6024475541245,
   "end_elevation_m": 722.4793447191144,
   "start_xy": [
    2623249.0343900947,
    1204912.8459432824
   ],
   "end_xy": [
    2623273.670017266,
    1204914.2213748703
   ]
  },
  "min_50m": {
   "gradient_pct": -8.242224779875869,
   "start_distance_m": 70.0,
   "end_distance_m": 120.0,
   "midpoint_distance_m": 95.0,
   "start_elevation_m": 724.6024475541245,
   "end_elevation_m": 720.4813351641866,
   "start_xy": [
    2623249.0343900947,
    1204912.8459432824
   ],
   "end_xy": [
    2623297.1730920086,
    1204906.2776484534
   ]
  },
  "min_100m": {
   "gradient_pct": -8.018060092895439,
   "start_distance_m": 47.0,
   "end_distance_m": 147.0,
   "midpoint_distance_m": 97.0,
   "start_elevation_m": 726.3420997582261,
   "end_elevation_m": 718.3240396653307,
   "start_xy": [
    2623227.689529182,
    1204904.3035884658
   ],
   "end_xy": [
    2623321.733456669,
    1204895.158000102
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 26.745870641161673,
   "start_distance_m": 1177.0,
   "end_distance_m": 1179.0,
   "midpoint_distance_m": 1178.0,
   "start_elevation_m": 797.0244196921401,
   "end_elevation_m": 797.5593371049633,
   "start_xy": [
    2623607.1144580566,
    1205283.1886992373
   ],
   "end_xy": [
    2623608.440358707,
    1205281.6913724642
   ]
  },
  "max_3m": {
   "gradient_pct": 26.046207750619033,
   "start_distance_m": 1027.0,
   "end_distance_m": 1030.0,
   "midpoint_distance_m": 1028.5,
   "start_elevation_m": 767.1223641956772,
   "end_elevation_m": 767.9037504281957,
   "start_xy": [
    2623562.35064649,
    1205422.223503751
   ],
   "end_xy": [
    2623563.731870756,
    1205419.5603816118
   ]
  }
 },
 "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_2025_2623-1204_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2025_2623-1205_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-11T02:44:56+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": [
   "2623-1204",
   "2623-1205"
  ],
  "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": "L\u00fctzelfl\u00fch",
  "county": "Bern/Berne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}