{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (46.8280, 9.6716)",
 "slug": "discovered-lane-46-8280-9-6716",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 24.66294918232279,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 121.0,
   "end_distance_m": 123.0,
   "start_elevation_m": 1136.7595033673974,
   "end_elevation_m": 1137.2527623510439,
   "min_gradient_pct": -11.566995004989167
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.181188774203594,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 121.0,
   "end_distance_m": 124.0,
   "start_elevation_m": 1136.7595033673974,
   "end_elevation_m": 1137.4849390306235,
   "min_gradient_pct": -6.440984451963534
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.388517479861548,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 118.0,
   "end_distance_m": 123.0,
   "start_elevation_m": 1136.0833364770508,
   "end_elevation_m": 1137.2527623510439,
   "min_gradient_pct": -1.8994003126044845
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.71359863502539,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 274.0,
   "end_distance_m": 284.0,
   "start_elevation_m": 1159.94612511438,
   "end_elevation_m": 1162.2174849778826,
   "min_gradient_pct": -0.8600886644148886
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.34994678168846,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 266.0,
   "end_distance_m": 286.0,
   "start_elevation_m": 1158.1770510644421,
   "end_elevation_m": 1162.6470404207798,
   "min_gradient_pct": 0.32341764258376315
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.05803236425254,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 261.0,
   "end_distance_m": 286.0,
   "start_elevation_m": 1157.1325323297167,
   "end_elevation_m": 1162.6470404207798,
   "min_gradient_pct": 0.4582121403345809
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.627074910706597,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 236.0,
   "end_distance_m": 286.0,
   "start_elevation_m": 1151.8335029654265,
   "end_elevation_m": 1162.6470404207798,
   "min_gradient_pct": 2.090935982845167
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 21.13615096296212,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 236.0,
   "end_distance_m": 336.0,
   "start_elevation_m": 1151.8335029654265,
   "end_elevation_m": 1172.9696539283887,
   "min_gradient_pct": 6.377581527827488
  }
 ],
 "shape": {
  "ascent_concentration": 0.338,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 253.0,
  "shape_class": "sustained"
 },
 "length_m": 989.697576442316,
 "start_elevation_m": 1120.3428405375969,
 "end_elevation_m": 1253.010342871081,
 "endpoint_gain_m": 132.6675023334842,
 "overall_gradient_pct": 13.40485270362958,
 "accumulated_ascent_m": 133.08744994267704,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.388517479861548,
   "start_distance_m": 118.0,
   "end_distance_m": 123.0,
   "midpoint_distance_m": 120.5,
   "start_elevation_m": 1136.0833364770508,
   "end_elevation_m": 1137.2527623510439,
   "start_xy": [
    2770337.5722211837,
    1188578.931324805
   ],
   "end_xy": [
    2770338.462324244,
    1188583.7920228478
   ]
  },
  "max_10m": {
   "gradient_pct": 22.71359863502539,
   "start_distance_m": 274.0,
   "end_distance_m": 284.0,
   "midpoint_distance_m": 279.0,
   "start_elevation_m": 1159.94612511438,
   "end_elevation_m": 1162.2174849778826,
   "start_xy": [
    2770303.596075222,
    1188641.3199453193
   ],
   "end_xy": [
    2770309.64086115,
    1188649.2035322357
   ]
  },
  "max_20m": {
   "gradient_pct": 22.34994678168846,
   "start_distance_m": 266.0,
   "end_distance_m": 286.0,
   "midpoint_distance_m": 276.0,
   "start_elevation_m": 1158.1770510644421,
   "end_elevation_m": 1162.6470404207798,
   "start_xy": [
    2770297.1363365985,
    1188636.6462096516
   ],
   "end_xy": [
    2770310.590309635,
    1188650.9637910225
   ]
  },
  "max_25m": {
   "gradient_pct": 22.05803236425254,
   "start_distance_m": 261.0,
   "end_distance_m": 286.0,
   "midpoint_distance_m": 273.5,
   "start_elevation_m": 1157.1325323297167,
   "end_elevation_m": 1162.6470404207798,
   "start_xy": [
    2770292.7180888383,
    1188634.3110588167
   ],
   "end_xy": [
    2770310.590309635,
    1188650.9637910225
   ]
  },
  "max_50m": {
   "gradient_pct": 21.627074910706597,
   "start_distance_m": 236.0,
   "end_distance_m": 286.0,
   "midpoint_distance_m": 261.0,
   "start_elevation_m": 1151.8335029654265,
   "end_elevation_m": 1162.6470404207798,
   "start_xy": [
    2770270.7413405697,
    1188622.4450878561
   ],
   "end_xy": [
    2770310.590309635,
    1188650.9637910225
   ]
  },
  "max_100m": {
   "gradient_pct": 21.13615096296212,
   "start_distance_m": 236.0,
   "end_distance_m": 336.0,
   "midpoint_distance_m": 286.0,
   "start_elevation_m": 1151.8335029654265,
   "end_elevation_m": 1172.9696539283887,
   "start_xy": [
    2770270.7413405697,
    1188622.4450878561
   ],
   "end_xy": [
    2770331.3373723817,
    1188695.376802561
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -1.8994003126044845,
   "start_distance_m": 179.0,
   "end_distance_m": 184.0,
   "midpoint_distance_m": 181.5,
   "start_elevation_m": 1144.5463274928175,
   "end_elevation_m": 1144.4513574771872,
   "start_xy": [
    2770288.4600775316,
    1188599.5444517382
   ],
   "end_xy": [
    2770283.483762148,
    1188600.0305390044
   ]
  },
  "min_10m": {
   "gradient_pct": -0.8600886644148886,
   "start_distance_m": 176.0,
   "end_distance_m": 186.0,
   "midpoint_distance_m": 181.0,
   "start_elevation_m": 1144.5257496345375,
   "end_elevation_m": 1144.439740768096,
   "start_xy": [
    2770291.44850916,
    1188599.285566055
   ],
   "end_xy": [
    2770281.4932897794,
    1188600.2255229834
   ]
  },
  "min_20m": {
   "gradient_pct": 0.32341764258376315,
   "start_distance_m": 876.0,
   "end_distance_m": 896.0,
   "midpoint_distance_m": 886.0,
   "start_elevation_m": 1243.2130024893281,
   "end_elevation_m": 1243.2776860178449,
   "start_xy": [
    2770316.2289759014,
    1188882.0404289356
   ],
   "end_xy": [
    2770326.2904378287,
    1188898.3071257372
   ]
  },
  "min_25m": {
   "gradient_pct": 0.4582121403345809,
   "start_distance_m": 876.0,
   "end_distance_m": 901.0,
   "midpoint_distance_m": 888.5,
   "start_elevation_m": 1243.2130024893281,
   "end_elevation_m": 1243.3275555244118,
   "start_xy": [
    2770316.2289759014,
    1188882.0404289356
   ],
   "end_xy": [
    2770328.778009576,
    1188902.4774125887
   ]
  },
  "min_50m": {
   "gradient_pct": 2.090935982845167,
   "start_distance_m": 868.0,
   "end_distance_m": 918.0,
   "midpoint_distance_m": 893.0,
   "start_elevation_m": 1242.9847270523119,
   "end_elevation_m": 1244.0301950437345,
   "start_xy": [
    2770312.0609426126,
    1188875.3138138617
   ],
   "end_xy": [
    2770315.488874046,
    1188904.6756336088
   ]
  },
  "min_100m": {
   "gradient_pct": 6.377581527827488,
   "start_distance_m": 828.0,
   "end_distance_m": 928.0,
   "midpoint_distance_m": 878.0,
   "start_elevation_m": 1238.6353081889365,
   "end_elevation_m": 1245.012889716764,
   "start_xy": [
    2770277.189963957,
    1188857.3960063162
   ],
   "end_xy": [
    2770306.4080318594,
    1188900.4899132375
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 24.66294918232279,
   "start_distance_m": 121.0,
   "end_distance_m": 123.0,
   "midpoint_distance_m": 122.0,
   "start_elevation_m": 1136.7595033673974,
   "end_elevation_m": 1137.2527623510439,
   "start_xy": [
    2770338.3332246467,
    1188581.7977171072
   ],
   "end_xy": [
    2770338.462324244,
    1188583.7920228478
   ]
  },
  "max_3m": {
   "gradient_pct": 24.181188774203594,
   "start_distance_m": 121.0,
   "end_distance_m": 124.0,
   "midpoint_distance_m": 122.5,
   "start_elevation_m": 1136.7595033673974,
   "end_elevation_m": 1137.4849390306235,
   "start_xy": [
    2770338.3332246467,
    1188581.7977171072
   ],
   "end_xy": [
    2770338.2219593744,
    1188584.7627049056
   ]
  }
 },
 "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",
   "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_2023_2770-1188_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-15T21:42:39+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/switzerland-2026-09-10.osm.pbf",
  "osm_snapshot": "2026-09-09T20:21:20Z",
  "run_id": "retro-260915-dogleg-all",
  "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": [
   "2770-1188"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 no surface model (DSM or point cloud) registered for this coverage",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Arosa",
  "county": "Graub\u00fcnden/Grischun/Grigioni",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}