{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (46.6440, 8.0838)",
 "slug": "discovered-lane-46-6440-8-0838",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 21.990998797048178,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 2827.0,
   "end_distance_m": 2829.0,
   "start_elevation_m": 1754.3721592750453,
   "end_elevation_m": 1754.8119792509863,
   "min_gradient_pct": -0.7260407066837615
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 18.969629661736082,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 2963.0,
   "end_distance_m": 2966.0,
   "start_elevation_m": 1769.555958441812,
   "end_elevation_m": 1770.125047331664,
   "min_gradient_pct": 1.7321865037426203
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 17.816654821699558,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 4668.0,
   "end_distance_m": 4673.0,
   "start_elevation_m": 1960.9244466362989,
   "end_elevation_m": 1961.8152793773838,
   "min_gradient_pct": 4.530477042799248
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 15.5820070772279,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 4666.0,
   "end_distance_m": 4676.0,
   "start_elevation_m": 1960.6694706603917,
   "end_elevation_m": 1962.2276713681144,
   "min_gradient_pct": 7.15921663343579
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 13.759473976062964,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 3584.0,
   "end_distance_m": 3604.0,
   "start_elevation_m": 1836.2844589947476,
   "end_elevation_m": 1839.0363537899602,
   "min_gradient_pct": 8.065635260411455
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 13.478659968712236,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 3579.0,
   "end_distance_m": 3604.0,
   "start_elevation_m": 1835.6666887977822,
   "end_elevation_m": 1839.0363537899602,
   "min_gradient_pct": 8.314914356532427
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 12.879221136452543,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 3561.0,
   "end_distance_m": 3611.0,
   "start_elevation_m": 1833.4514660319992,
   "end_elevation_m": 1839.8910766002255,
   "min_gradient_pct": 9.243400599753386
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 12.60603827138516,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2103.0,
   "end_distance_m": 2203.0,
   "start_elevation_m": 1671.960565972776,
   "end_elevation_m": 1684.5666042441612,
   "min_gradient_pct": 9.465210527615454
  }
 ],
 "shape": {
  "ascent_concentration": 0.259,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 554.0,
  "shape_class": "sustained"
 },
 "length_m": 4676.985127194659,
 "start_elevation_m": 1442.9975835937526,
 "end_elevation_m": 1962.3359088671862,
 "endpoint_gain_m": 519.3383252734336,
 "overall_gradient_pct": 11.104126080147322,
 "accumulated_ascent_m": 520.408487261659,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 17.816654821699558,
   "start_distance_m": 4668.0,
   "end_distance_m": 4673.0,
   "midpoint_distance_m": 4670.5,
   "start_elevation_m": 1960.9244466362989,
   "end_elevation_m": 1961.8152793773838,
   "start_xy": [
    2650774.2677288437,
    1167380.385907068
   ],
   "end_xy": [
    2650778.758634193,
    1167382.5840356234
   ]
  },
  "max_10m": {
   "gradient_pct": 15.5820070772279,
   "start_distance_m": 4666.0,
   "end_distance_m": 4676.0,
   "midpoint_distance_m": 4671.0,
   "start_elevation_m": 1960.6694706603917,
   "end_elevation_m": 1962.2276713681144,
   "start_xy": [
    2650772.4713667044,
    1167379.5066556458
   ],
   "end_xy": [
    2650781.4531774023,
    1167383.9029127564
   ]
  },
  "max_20m": {
   "gradient_pct": 13.759473976062964,
   "start_distance_m": 3584.0,
   "end_distance_m": 3604.0,
   "midpoint_distance_m": 3594.0,
   "start_elevation_m": 1836.2844589947476,
   "end_elevation_m": 1839.0363537899602,
   "start_xy": [
    2650336.502648149,
    1166987.4407774943
   ],
   "end_xy": [
    2650356.149593966,
    1166983.7038506677
   ]
  },
  "max_25m": {
   "gradient_pct": 13.478659968712236,
   "start_distance_m": 3579.0,
   "end_distance_m": 3604.0,
   "midpoint_distance_m": 3591.5,
   "start_elevation_m": 1835.6666887977822,
   "end_elevation_m": 1839.0363537899602,
   "start_xy": [
    2650331.593297641,
    1166988.388552567
   ],
   "end_xy": [
    2650356.149593966,
    1166983.7038506677
   ]
  },
  "max_50m": {
   "gradient_pct": 12.879221136452543,
   "start_distance_m": 3561.0,
   "end_distance_m": 3611.0,
   "midpoint_distance_m": 3586.0,
   "start_elevation_m": 1833.4514660319992,
   "end_elevation_m": 1839.8910766002255,
   "start_xy": [
    2650313.919635812,
    1166991.8005428284
   ],
   "end_xy": [
    2650363.082627795,
    1166982.767523995
   ]
  },
  "max_100m": {
   "gradient_pct": 12.60603827138516,
   "start_distance_m": 2103.0,
   "end_distance_m": 2203.0,
   "midpoint_distance_m": 2153.0,
   "start_elevation_m": 1671.960565972776,
   "end_elevation_m": 1684.5666042441612,
   "start_xy": [
    2649938.4342094855,
    1166469.2207415078
   ],
   "end_xy": [
    2650038.378456784,
    1166472.5179600087
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 4.530477042799248,
   "start_distance_m": 3039.0,
   "end_distance_m": 3044.0,
   "midpoint_distance_m": 3041.5,
   "start_elevation_m": 1777.7217272920157,
   "end_elevation_m": 1777.9482511441556,
   "start_xy": [
    2650163.6609895406,
    1166814.6946231658
   ],
   "end_xy": [
    2650167.424478401,
    1166811.407182781
   ]
  },
  "min_10m": {
   "gradient_pct": 7.15921663343579,
   "start_distance_m": 3039.0,
   "end_distance_m": 3049.0,
   "midpoint_distance_m": 3044.0,
   "start_elevation_m": 1777.7217272920157,
   "end_elevation_m": 1778.4376489553592,
   "start_xy": [
    2650163.6609895406,
    1166814.6946231658
   ],
   "end_xy": [
    2650171.75157327,
    1166808.9238680901
   ]
  },
  "min_20m": {
   "gradient_pct": 8.065635260411455,
   "start_distance_m": 4645.0,
   "end_distance_m": 4665.0,
   "midpoint_distance_m": 4655.0,
   "start_elevation_m": 1958.965180691506,
   "end_elevation_m": 1960.5783077435883,
   "start_xy": [
    2650767.0276271515,
    1167362.4076181694
   ],
   "end_xy": [
    2650771.5731856343,
    1167379.0670299346
   ]
  },
  "min_25m": {
   "gradient_pct": 8.314914356532427,
   "start_distance_m": 4640.0,
   "end_distance_m": 4665.0,
   "midpoint_distance_m": 4652.5,
   "start_elevation_m": 1958.4995791544552,
   "end_elevation_m": 1960.5783077435883,
   "start_xy": [
    2650767.419581804,
    1167357.4235237301
   ],
   "end_xy": [
    2650771.5731856343,
    1167379.0670299346
   ]
  },
  "min_50m": {
   "gradient_pct": 9.243400599753386,
   "start_distance_m": 1648.0,
   "end_distance_m": 1698.0,
   "midpoint_distance_m": 1673.0,
   "start_elevation_m": 1623.38691329553,
   "end_elevation_m": 1628.0086135954066,
   "start_xy": [
    2649756.624947974,
    1166310.855337834
   ],
   "end_xy": [
    2649768.6814830867,
    1166332.8671515556
   ]
  },
  "min_100m": {
   "gradient_pct": 9.465210527615454,
   "start_distance_m": 1468.0,
   "end_distance_m": 1568.0,
   "midpoint_distance_m": 1518.0,
   "start_elevation_m": 1605.4373024528343,
   "end_elevation_m": 1614.9025129804497,
   "start_xy": [
    2649847.756036738,
    1166182.1268074918
   ],
   "end_xy": [
    2649820.434300267,
    1166272.7977192008
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 21.990998797048178,
   "start_distance_m": 2827.0,
   "end_distance_m": 2829.0,
   "midpoint_distance_m": 2828.0,
   "start_elevation_m": 1754.3721592750453,
   "end_elevation_m": 1754.8119792509863,
   "start_xy": [
    2650007.9749645726,
    1166773.0268050404
   ],
   "end_xy": [
    2650009.849089543,
    1166773.7194385072
   ]
  },
  "max_3m": {
   "gradient_pct": 18.969629661736082,
   "start_distance_m": 2963.0,
   "end_distance_m": 2966.0,
   "midpoint_distance_m": 2964.5,
   "start_elevation_m": 1769.555958441812,
   "end_elevation_m": 1770.125047331664,
   "start_xy": [
    2650107.261529691,
    1166860.534
   ],
   "end_xy": [
    2650110.2426415356,
    1166860.2441418471
   ]
  }
 },
 "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_2025_2649-1165_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2025_2649-1166_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2025_2649-1167_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2025_2650-1166_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2025_2650-1167_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-10T20:56:57+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": [
   "2649-1165",
   "2649-1166",
   "2649-1167",
   "2650-1166",
   "2650-1167"
  ],
  "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)"
 }
}