{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (47.0437, 7.8558)",
 "slug": "discovered-lane-47-0437-7-8558",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.818311113368964,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 282.0,
   "end_distance_m": 284.0,
   "start_elevation_m": 969.6685587462683,
   "end_elevation_m": 970.1849249685357,
   "min_gradient_pct": -11.332715083062794
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 25.223091746052734,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 289.0,
   "end_distance_m": 292.0,
   "start_elevation_m": 971.3326439857339,
   "end_elevation_m": 972.0893367381154,
   "min_gradient_pct": -10.98390400493372
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.7783421122449,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 287.0,
   "end_distance_m": 292.0,
   "start_elevation_m": 970.8504196325032,
   "end_elevation_m": 972.0893367381154,
   "min_gradient_pct": -10.758190691219625
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.510320736452513,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 289.0,
   "end_distance_m": 299.0,
   "start_elevation_m": 971.3326439857339,
   "end_elevation_m": 973.7836760593791,
   "min_gradient_pct": -9.668023722815633
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.335757588142997,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 282.0,
   "end_distance_m": 302.0,
   "start_elevation_m": 969.6685587462683,
   "end_elevation_m": 974.5357102638969,
   "min_gradient_pct": -8.029785498965794
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 24.112719629610183,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 279.0,
   "end_distance_m": 304.0,
   "start_elevation_m": 968.9612445853413,
   "end_elevation_m": 974.9894244927439,
   "min_gradient_pct": -7.594653760058009
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 23.44697602669521,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 261.0,
   "end_distance_m": 311.0,
   "start_elevation_m": 964.8999112862948,
   "end_elevation_m": 976.6233992996424,
   "min_gradient_pct": -3.9911352780090965
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 22.37484912279399,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 231.0,
   "end_distance_m": 331.0,
   "start_elevation_m": 958.2708237778232,
   "end_elevation_m": 980.6456729006172,
   "min_gradient_pct": -3.165476622463302
  }
 ],
 "shape": {
  "ascent_concentration": 0.619,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 171.0,
  "shape_class": "stepped"
 },
 "length_m": 523.6665836343021,
 "start_elevation_m": 962.0948510078097,
 "end_elevation_m": 1000.7038206806646,
 "endpoint_gain_m": 38.60896967285498,
 "overall_gradient_pct": 7.372815237685132,
 "accumulated_ascent_m": 44.97095805168169,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.7783421122449,
   "start_distance_m": 287.0,
   "end_distance_m": 292.0,
   "midpoint_distance_m": 289.5,
   "start_elevation_m": 970.8504196325032,
   "end_elevation_m": 972.0893367381154,
   "start_xy": [
    2631726.9075880637,
    1210436.2284926039
   ],
   "end_xy": [
    2631727.296434228,
    1210441.2133495386
   ]
  },
  "max_10m": {
   "gradient_pct": 24.510320736452513,
   "start_distance_m": 289.0,
   "end_distance_m": 299.0,
   "midpoint_distance_m": 294.0,
   "start_elevation_m": 971.3326439857339,
   "end_elevation_m": 973.7836760593791,
   "start_xy": [
    2631727.0631265296,
    1210438.2224353778
   ],
   "end_xy": [
    2631727.840818858,
    1210448.1921492475
   ]
  },
  "max_20m": {
   "gradient_pct": 24.335757588142997,
   "start_distance_m": 282.0,
   "end_distance_m": 302.0,
   "midpoint_distance_m": 292.0,
   "start_elevation_m": 969.6685587462683,
   "end_elevation_m": 974.5357102638969,
   "start_xy": [
    2631726.608127755,
    1210431.238543512
   ],
   "end_xy": [
    2631728.0741265565,
    1210451.1830634084
   ]
  },
  "max_25m": {
   "gradient_pct": 24.112719629610183,
   "start_distance_m": 279.0,
   "end_distance_m": 304.0,
   "midpoint_distance_m": 291.5,
   "start_elevation_m": 968.9612445853413,
   "end_elevation_m": 974.9894244927439,
   "start_xy": [
    2631726.500253994,
    1210428.2404835974
   ],
   "end_xy": [
    2631728.229665022,
    1210453.1770061823
   ]
  },
  "max_50m": {
   "gradient_pct": 23.44697602669521,
   "start_distance_m": 261.0,
   "end_distance_m": 311.0,
   "midpoint_distance_m": 286.0,
   "start_elevation_m": 964.8999112862948,
   "end_elevation_m": 976.6233992996424,
   "start_xy": [
    2631725.8530114284,
    1210410.2521241095
   ],
   "end_xy": [
    2631729.07334175,
    1210460.1128736613
   ]
  },
  "max_100m": {
   "gradient_pct": 22.37484912279399,
   "start_distance_m": 231.0,
   "end_distance_m": 331.0,
   "midpoint_distance_m": 281.0,
   "start_elevation_m": 958.2708237778232,
   "end_elevation_m": 980.6456729006172,
   "start_xy": [
    2631724.905761241,
    1210380.298549063
   ],
   "end_xy": [
    2631735.8385101906,
    1210478.8635646342
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -10.758190691219625,
   "start_distance_m": 15.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 17.5,
   "start_elevation_m": 961.6168913064643,
   "end_elevation_m": 961.0789817719033,
   "start_xy": [
    2631616.0164186726,
    1210490.1497183687
   ],
   "end_xy": [
    2631620.5119083133,
    1210488.0977292291
   ]
  },
  "min_10m": {
   "gradient_pct": -9.668023722815633,
   "start_distance_m": 15.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 20.0,
   "start_elevation_m": 961.6168913064643,
   "end_elevation_m": 960.6500889341827,
   "start_xy": [
    2631616.0164186726,
    1210490.1497183687
   ],
   "end_xy": [
    2631625.406011771,
    1210487.4462056425
   ]
  },
  "min_20m": {
   "gradient_pct": -8.029785498965794,
   "start_distance_m": 10.0,
   "end_distance_m": 30.0,
   "midpoint_distance_m": 20.0,
   "start_elevation_m": 961.9405795621074,
   "end_elevation_m": 960.3346224623142,
   "start_xy": [
    2631612.446304881,
    1210493.5215212987
   ],
   "end_xy": [
    2631630.331762915,
    1210488.047830303
   ]
  },
  "min_25m": {
   "gradient_pct": -7.594653760058009,
   "start_distance_m": 11.0,
   "end_distance_m": 36.0,
   "midpoint_distance_m": 23.5,
   "start_elevation_m": 961.9073752193589,
   "end_elevation_m": 960.0087117793444,
   "start_xy": [
    2631612.919965085,
    1210492.6408136224
   ],
   "end_xy": [
    2631635.780846485,
    1210490.5509010341
   ]
  },
  "min_50m": {
   "gradient_pct": -3.9911352780090965,
   "start_distance_m": 67.0,
   "end_distance_m": 117.0,
   "midpoint_distance_m": 92.0,
   "start_elevation_m": 960.7188954556684,
   "end_elevation_m": 958.7233278166639,
   "start_xy": [
    2631664.8291148753,
    1210500.2501584843
   ],
   "end_xy": [
    2631693.4315805286,
    1210466.327520598
   ]
  },
  "min_100m": {
   "gradient_pct": -3.165476622463302,
   "start_distance_m": 7.0,
   "end_distance_m": 107.0,
   "midpoint_distance_m": 57.0,
   "start_elevation_m": 962.0279369114675,
   "end_elevation_m": 958.8624602890042,
   "start_xy": [
    2631611.2542409888,
    1210496.2357521155
   ],
   "end_xy": [
    2631692.8829830904,
    1210476.3002371243
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.818311113368964,
   "start_distance_m": 282.0,
   "end_distance_m": 284.0,
   "midpoint_distance_m": 283.0,
   "start_elevation_m": 969.6685587462683,
   "end_elevation_m": 970.1849249685357,
   "start_xy": [
    2631726.608127755,
    1210431.238543512
   ],
   "end_xy": [
    2631726.680043596,
    1210433.2372501218
   ]
  },
  "max_3m": {
   "gradient_pct": 25.223091746052734,
   "start_distance_m": 289.0,
   "end_distance_m": 292.0,
   "midpoint_distance_m": 290.5,
   "start_elevation_m": 971.3326439857339,
   "end_elevation_m": 972.0893367381154,
   "start_xy": [
    2631727.0631265296,
    1210438.2224353778
   ],
   "end_xy": [
    2631727.296434228,
    1210441.2133495386
   ]
  }
 },
 "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_2631-1210_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-10T19:39:47+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": [
   "2631-1210"
  ],
  "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": "Sumiswald",
  "county": "Bern/Berne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 },
 "review_flags": [
  {
   "kind": "possible-bridge-or-hollow",
   "span_m": [
    105.0,
    275.0
   ],
   "status": "pending-human-review",
   "noted": "2026-09-21",
   "figure_adjusted": false
  }
 ]
}