{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (46.3722, 8.9793)",
 "slug": "discovered-lane-46-3722-8-9793",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.962544004644883,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 655.0,
   "end_distance_m": 657.0,
   "start_elevation_m": 415.7390732865382,
   "end_elevation_m": 416.2583241666311,
   "min_gradient_pct": -6.284700524113873
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 20.684917358444938,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 655.0,
   "end_distance_m": 658.0,
   "start_elevation_m": 415.7390732865382,
   "end_elevation_m": 416.35962080729155,
   "min_gradient_pct": -5.329289412929938
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 18.066230611703986,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1324.0,
   "end_distance_m": 1329.0,
   "start_elevation_m": 489.91446017072496,
   "end_elevation_m": 490.81777170131016,
   "min_gradient_pct": -3.8238061733159157
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 17.04065113267859,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1322.0,
   "end_distance_m": 1332.0,
   "start_elevation_m": 489.576096228163,
   "end_elevation_m": 491.28016134143087,
   "min_gradient_pct": -1.6912743671616681
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 16.177534749014058,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1251.0,
   "end_distance_m": 1271.0,
   "start_elevation_m": 479.4670412050467,
   "end_elevation_m": 482.7025481548495,
   "min_gradient_pct": 0.9174319104064921
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 15.721253679899064,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1309.0,
   "end_distance_m": 1334.0,
   "start_elevation_m": 487.6568385880046,
   "end_elevation_m": 491.58715200797934,
   "min_gradient_pct": 2.1270528918184937
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 14.444772528036765,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1300.0,
   "end_distance_m": 1350.0,
   "start_elevation_m": 486.4189240506,
   "end_elevation_m": 493.6413103146184,
   "min_gradient_pct": 5.5875360548254775
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 14.373654586159546,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1243.0,
   "end_distance_m": 1343.0,
   "start_elevation_m": 478.39700562346604,
   "end_elevation_m": 492.7706602096256,
   "min_gradient_pct": 6.994059771895309
  }
 ],
 "shape": {
  "ascent_concentration": 0.267,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 197.0,
  "shape_class": "sustained"
 },
 "length_m": 2293.2253671919275,
 "start_elevation_m": 346.2349515106107,
 "end_elevation_m": 599.4969438818259,
 "endpoint_gain_m": 253.26199237121523,
 "overall_gradient_pct": 11.043920758705742,
 "accumulated_ascent_m": 253.80233539318584,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 18.066230611703986,
   "start_distance_m": 1324.0,
   "end_distance_m": 1329.0,
   "midpoint_distance_m": 1326.5,
   "start_elevation_m": 489.91446017072496,
   "end_elevation_m": 490.81777170131016,
   "start_xy": [
    2718472.200376004,
    1136887.8241020076
   ],
   "end_xy": [
    2718476.7880723253,
    1136886.0405924025
   ]
  },
  "max_10m": {
   "gradient_pct": 17.04065113267859,
   "start_distance_m": 1322.0,
   "end_distance_m": 1332.0,
   "midpoint_distance_m": 1327.0,
   "start_elevation_m": 489.576096228163,
   "end_elevation_m": 491.28016134143087,
   "start_xy": [
    2718470.211047145,
    1136887.7861918916
   ],
   "end_xy": [
    2718478.5891757356,
    1136883.6520953681
   ]
  },
  "max_20m": {
   "gradient_pct": 16.177534749014058,
   "start_distance_m": 1251.0,
   "end_distance_m": 1271.0,
   "midpoint_distance_m": 1261.0,
   "start_elevation_m": 479.4670412050467,
   "end_elevation_m": 482.7025481548495,
   "start_xy": [
    2718430.218803446,
    1136832.9512683859
   ],
   "end_xy": [
    2718435.3139109504,
    1136852.2913790245
   ]
  },
  "max_25m": {
   "gradient_pct": 15.721253679899064,
   "start_distance_m": 1309.0,
   "end_distance_m": 1334.0,
   "midpoint_distance_m": 1321.5,
   "start_elevation_m": 487.6568385880046,
   "end_elevation_m": 491.58715200797934,
   "start_xy": [
    2718459.885031102,
    1136880.460494494
   ],
   "end_xy": [
    2718479.5400239322,
    1136881.8925818824
   ]
  },
  "max_50m": {
   "gradient_pct": 14.444772528036765,
   "start_distance_m": 1300.0,
   "end_distance_m": 1350.0,
   "midpoint_distance_m": 1325.0,
   "start_elevation_m": 486.4189240506,
   "end_elevation_m": 493.6413103146184,
   "start_xy": [
    2718453.342237332,
    1136874.2805390188
   ],
   "end_xy": [
    2718485.6200807695,
    1136867.099354119
   ]
  },
  "max_100m": {
   "gradient_pct": 14.373654586159546,
   "start_distance_m": 1243.0,
   "end_distance_m": 1343.0,
   "midpoint_distance_m": 1293.0,
   "start_elevation_m": 478.39700562346604,
   "end_elevation_m": 492.7706602096256,
   "start_xy": [
    2718428.0621759966,
    1136825.25285146
   ],
   "end_xy": [
    2718483.0054409197,
    1136873.5927090652
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -3.8238061733159157,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 346.2349515106107,
   "end_elevation_m": 346.0437612019449,
   "start_xy": [
    2717604.825,
    1136581.967
   ],
   "end_xy": [
    2717609.230531964,
    1136584.3315880112
   ]
  },
  "min_10m": {
   "gradient_pct": -1.6912743671616681,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 346.2349515106107,
   "end_elevation_m": 346.06582407389453,
   "start_xy": [
    2717604.825,
    1136581.967
   ],
   "end_xy": [
    2717613.6338883727,
    1136586.7002273542
   ]
  },
  "min_20m": {
   "gradient_pct": 0.9174319104064921,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 346.2349515106107,
   "end_elevation_m": 346.418437892692,
   "start_xy": [
    2717604.825,
    1136581.967
   ],
   "end_xy": [
    2717621.969803822,
    1136592.2164391186
   ]
  },
  "min_25m": {
   "gradient_pct": 2.1270528918184937,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 346.2349515106107,
   "end_elevation_m": 346.7667147335653,
   "start_xy": [
    2717604.825,
    1136581.967
   ],
   "end_xy": [
    2717626.113914014,
    1136595.0140006852
   ]
  },
  "min_50m": {
   "gradient_pct": 5.5875360548254775,
   "start_distance_m": 478.0,
   "end_distance_m": 528.0,
   "midpoint_distance_m": 503.0,
   "start_elevation_m": 398.40731962108316,
   "end_elevation_m": 401.2010876484959,
   "start_xy": [
    2717967.2422476504,
    1136802.9722492748
   ],
   "end_xy": [
    2717995.4331181794,
    1136774.6794196505
   ]
  },
  "min_100m": {
   "gradient_pct": 6.994059771895309,
   "start_distance_m": 425.0,
   "end_distance_m": 525.0,
   "midpoint_distance_m": 475.0,
   "start_elevation_m": 394.00941761448337,
   "end_elevation_m": 401.0034773863787,
   "start_xy": [
    2717928.176313467,
    1136810.0096583916
   ],
   "end_xy": [
    2717992.481486459,
    1136774.1428842973
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.962544004644883,
   "start_distance_m": 655.0,
   "end_distance_m": 657.0,
   "midpoint_distance_m": 656.0,
   "start_elevation_m": 415.7390732865382,
   "end_elevation_m": 416.2583241666311,
   "start_xy": [
    2718098.8302774276,
    1136768.8767526904
   ],
   "end_xy": [
    2718100.495212879,
    1136769.9848997667
   ]
  },
  "max_3m": {
   "gradient_pct": 20.684917358444938,
   "start_distance_m": 655.0,
   "end_distance_m": 658.0,
   "midpoint_distance_m": 656.5,
   "start_elevation_m": 415.7390732865382,
   "end_elevation_m": 416.35962080729155,
   "start_xy": [
    2718098.8302774276,
    1136768.8767526904
   ],
   "end_xy": [
    2718101.3276806045,
    1136770.538973305
   ]
  }
 },
 "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_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_2022_2717-1136_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2022_2718-1136_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-10T20:27:14+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": [
   "2717-1136",
   "2718-1136"
  ],
  "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": "Biasca",
  "county": "Ticino",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}