{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (46.6205, 7.9579)",
 "slug": "discovered-lane-46-6205-7-9579",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 32.39782339011299,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 131.0,
   "end_distance_m": 133.0,
   "start_elevation_m": 1915.4790302847425,
   "end_elevation_m": 1916.1269867525448,
   "min_gradient_pct": -20.898576163676807,
   "suppressed_max_gradient_pct": 51.97351268228658,
   "suppressed_location_m": [
    233.0,
    235.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 30.300683074672936,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 131.0,
   "end_distance_m": 134.0,
   "start_elevation_m": 1915.4790302847425,
   "end_elevation_m": 1916.3880507769827,
   "min_gradient_pct": -16.22424891169582,
   "suppressed_max_gradient_pct": 51.31094506727246,
   "suppressed_location_m": [
    233.0,
    236.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 29.54937088311908,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 131.0,
   "end_distance_m": 136.0,
   "start_elevation_m": 1915.4790302847425,
   "end_elevation_m": 1916.9564988288985,
   "min_gradient_pct": -11.344767090959067,
   "suppressed_max_gradient_pct": 45.07887559951541,
   "suppressed_location_m": [
    233.0,
    238.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 28.85281194783829,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 131.0,
   "end_distance_m": 141.0,
   "start_elevation_m": 1915.4790302847425,
   "end_elevation_m": 1918.3643114795264,
   "min_gradient_pct": -4.628772155583647,
   "suppressed_max_gradient_pct": 31.076609470617313,
   "suppressed_location_m": [
    230.0,
    240.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 27.231689642834453,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 123.0,
   "end_distance_m": 143.0,
   "start_elevation_m": 1913.463791335442,
   "end_elevation_m": 1918.910129264009,
   "min_gradient_pct": 5.550123853649893
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 27.043311211244145,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 122.0,
   "end_distance_m": 147.0,
   "start_elevation_m": 1913.204884519379,
   "end_elevation_m": 1919.96571232219,
   "min_gradient_pct": 7.346912687156873
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 26.190208809318392,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 98.0,
   "end_distance_m": 148.0,
   "start_elevation_m": 1907.1195059322422,
   "end_elevation_m": 1920.2146103369014,
   "min_gradient_pct": 8.236959092259895
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 23.947492460435114,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 63.0,
   "end_distance_m": 163.0,
   "start_elevation_m": 1899.2192641919628,
   "end_elevation_m": 1923.166756652398,
   "min_gradient_pct": 14.04341667187532
  }
 ],
 "shape": {
  "ascent_concentration": 0.363,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 177.0,
  "shape_class": "sustained"
 },
 "length_m": 240.00000000019836,
 "start_elevation_m": 1890.9198862303983,
 "end_elevation_m": 1932.6648051279783,
 "endpoint_gain_m": 41.744918897579964,
 "overall_gradient_pct": 17.39371620731061,
 "accumulated_ascent_m": 42.83985550145917,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 29.54937088311908,
   "start_distance_m": 131.0,
   "end_distance_m": 136.0,
   "midpoint_distance_m": 133.5,
   "start_elevation_m": 1915.4790302847425,
   "end_elevation_m": 1916.9564988288985,
   "start_xy": [
    2639758.2720834496,
    1163381.3333347382
   ],
   "end_xy": [
    2639753.3066139137,
    1163380.746723891
   ]
  },
  "max_10m": {
   "gradient_pct": 28.85281194783829,
   "start_distance_m": 131.0,
   "end_distance_m": 141.0,
   "midpoint_distance_m": 136.0,
   "start_elevation_m": 1915.4790302847425,
   "end_elevation_m": 1918.3643114795264,
   "start_xy": [
    2639758.2720834496,
    1163381.3333347382
   ],
   "end_xy": [
    2639748.341144378,
    1163380.1601130436
   ]
  },
  "max_20m": {
   "gradient_pct": 27.231689642834453,
   "start_distance_m": 123.0,
   "end_distance_m": 143.0,
   "midpoint_distance_m": 133.0,
   "start_elevation_m": 1913.463791335442,
   "end_elevation_m": 1918.910129264009,
   "start_xy": [
    2639766.2565369788,
    1163381.0423176438
   ],
   "end_xy": [
    2639746.3563484414,
    1163379.9155197234
   ]
  },
  "max_25m": {
   "gradient_pct": 27.043311211244145,
   "start_distance_m": 122.0,
   "end_distance_m": 147.0,
   "midpoint_distance_m": 134.5,
   "start_elevation_m": 1913.204884519379,
   "end_elevation_m": 1919.96571232219,
   "start_xy": [
    2639767.2551308153,
    1163380.989304911
   ],
   "end_xy": [
    2639742.407698277,
    1163379.2766442436
   ]
  },
  "max_50m": {
   "gradient_pct": 26.190208809318392,
   "start_distance_m": 98.0,
   "end_distance_m": 148.0,
   "midpoint_distance_m": 123.0,
   "start_elevation_m": 1907.1195059322422,
   "end_elevation_m": 1920.2146103369014,
   "start_xy": [
    2639790.299018,
    1163374.8240043786
   ],
   "end_xy": [
    2639741.420535736,
    1163379.1169253737
   ]
  },
  "max_100m": {
   "gradient_pct": 23.947492460435114,
   "start_distance_m": 63.0,
   "end_distance_m": 163.0,
   "midpoint_distance_m": 113.0,
   "start_elevation_m": 1899.2192641919628,
   "end_elevation_m": 1923.166756652398,
   "start_xy": [
    2639818.382279139,
    1163354.021162248
   ],
   "end_xy": [
    2639726.514716188,
    1163377.7907462972
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -11.344767090959067,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 1890.9198862303983,
   "end_elevation_m": 1890.3526478758504,
   "start_xy": [
    2639864.342,
    1163339.0
   ],
   "end_xy": [
    2639867.7961718943,
    1163342.2636428264
   ]
  },
  "min_10m": {
   "gradient_pct": -4.628772155583647,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 1890.9198862303983,
   "end_elevation_m": 1890.45700901484,
   "start_xy": [
    2639864.342,
    1163339.0
   ],
   "end_xy": [
    2639867.3237001374,
    1163346.9935454926
   ]
  },
  "min_20m": {
   "gradient_pct": 5.550123853649893,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 1890.9198862303983,
   "end_elevation_m": 1892.0299110011283,
   "start_xy": [
    2639864.342,
    1163339.0
   ],
   "end_xy": [
    2639858.638040944,
    1163349.969376841
   ]
  },
  "min_25m": {
   "gradient_pct": 7.346912687156873,
   "start_distance_m": 205.0,
   "end_distance_m": 230.0,
   "midpoint_distance_m": 217.5,
   "start_elevation_m": 1927.7204160091273,
   "end_elevation_m": 1929.5571441809166,
   "start_xy": [
    2639685.673755043,
    1163368.5217075376
   ],
   "end_xy": [
    2639661.641468074,
    1163361.6333707983
   ]
  },
  "min_50m": {
   "gradient_pct": 8.236959092259895,
   "start_distance_m": 180.0,
   "end_distance_m": 230.0,
   "midpoint_distance_m": 205.0,
   "start_elevation_m": 1925.4386646347866,
   "end_elevation_m": 1929.5571441809166,
   "start_xy": [
    2639709.742212388,
    1163375.2567830442
   ],
   "end_xy": [
    2639661.641468074,
    1163361.6333707983
   ]
  },
  "min_100m": {
   "gradient_pct": 14.04341667187532,
   "start_distance_m": 133.0,
   "end_distance_m": 233.0,
   "midpoint_distance_m": 183.0,
   "start_elevation_m": 1916.1269867525448,
   "end_elevation_m": 1930.17040342442,
   "start_xy": [
    2639756.2858956354,
    1163381.0986903994
   ],
   "end_xy": [
    2639658.757593638,
    1163360.8067703894
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 32.39782339011299,
   "start_distance_m": 131.0,
   "end_distance_m": 133.0,
   "midpoint_distance_m": 132.0,
   "start_elevation_m": 1915.4790302847425,
   "end_elevation_m": 1916.1269867525448,
   "start_xy": [
    2639758.2720834496,
    1163381.3333347382
   ],
   "end_xy": [
    2639756.2858956354,
    1163381.0986903994
   ]
  },
  "max_3m": {
   "gradient_pct": 30.300683074672936,
   "start_distance_m": 131.0,
   "end_distance_m": 134.0,
   "midpoint_distance_m": 132.5,
   "start_elevation_m": 1915.4790302847425,
   "end_elevation_m": 1916.3880507769827,
   "start_xy": [
    2639758.2720834496,
    1163381.3333347382
   ],
   "end_xy": [
    2639755.292801728,
    1163380.98136823
   ]
  }
 },
 "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": 0.025,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    231.0,
    236.0
   ]
  ],
  "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_2025_2639-1163_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-10T23:42:27+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": [
   "2639-1163"
  ],
  "route_summit_trim_m": 104.2,
  "route_summit_trim_loss_m": 3.1,
  "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": "Grindelwald",
  "county": "Bern/Berne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}