{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (46.6351, 8.0059)",
 "slug": "discovered-lane-46-6351-8-0059",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 27.259650269127178,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 113.0,
   "end_distance_m": 115.0,
   "start_elevation_m": 1022.2920268770346,
   "end_elevation_m": 1022.8372198824171,
   "min_gradient_pct": -86.38953918391508,
   "suppressed_max_gradient_pct": 119.71226431207356,
   "suppressed_location_m": [
    11.0,
    13.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 25.79383644842892,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 128.0,
   "end_distance_m": 131.0,
   "start_elevation_m": 1025.7780880940913,
   "end_elevation_m": 1026.5519031875442,
   "min_gradient_pct": -81.8715792867162,
   "suppressed_max_gradient_pct": 105.26955442926085,
   "suppressed_location_m": [
    10.0,
    13.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.09510651510027,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 140.0,
   "end_distance_m": 145.0,
   "start_elevation_m": 1028.3517907322275,
   "end_elevation_m": 1029.6065460579825,
   "min_gradient_pct": -70.11012666634315,
   "suppressed_max_gradient_pct": 84.41761581257197,
   "suppressed_location_m": [
    8.0,
    13.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.316689875985276,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 113.0,
   "end_distance_m": 123.0,
   "start_elevation_m": 1022.2920268770346,
   "end_elevation_m": 1024.723695864633,
   "min_gradient_pct": -35.15205084641593,
   "suppressed_max_gradient_pct": 33.23097339221022,
   "suppressed_location_m": [
    8.0,
    18.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.54765839924994,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 140.0,
   "end_distance_m": 160.0,
   "start_elevation_m": 1028.3517907322275,
   "end_elevation_m": 1033.0613224120775,
   "min_gradient_pct": -9.512056232368309
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.14195371641017,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 135.0,
   "end_distance_m": 160.0,
   "start_elevation_m": 1027.275833982975,
   "end_elevation_m": 1033.0613224120775,
   "min_gradient_pct": -8.258347737723398
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 22.891615535181018,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 110.0,
   "end_distance_m": 160.0,
   "start_elevation_m": 1021.615514644487,
   "end_elevation_m": 1033.0613224120775,
   "min_gradient_pct": 0.0010146777549380204
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.450931209286637,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 83.0,
   "end_distance_m": 183.0,
   "start_elevation_m": 1016.9866557689427,
   "end_elevation_m": 1037.4375869782293,
   "min_gradient_pct": 5.941514661416704
  }
 ],
 "shape": {
  "ascent_concentration": 0.348,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 147.0,
  "shape_class": "sustained"
 },
 "length_m": 204.51511078705758,
 "start_elevation_m": 1013.7568424770518,
 "end_elevation_m": 1040.3746289453084,
 "endpoint_gain_m": 26.617786468256554,
 "overall_gradient_pct": 13.015070801282336,
 "accumulated_ascent_m": 33.42858682469978,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.09510651510027,
   "start_distance_m": 140.0,
   "end_distance_m": 145.0,
   "midpoint_distance_m": 142.5,
   "start_elevation_m": 1028.3517907322275,
   "end_elevation_m": 1029.6065460579825,
   "start_xy": [
    2643436.041413989,
    1165051.5656335817
   ],
   "end_xy": [
    2643435.5980499503,
    1165056.5458384547
   ]
  },
  "max_10m": {
   "gradient_pct": 24.316689875985276,
   "start_distance_m": 113.0,
   "end_distance_m": 123.0,
   "midpoint_distance_m": 118.0,
   "start_elevation_m": 1022.2920268770346,
   "end_elevation_m": 1024.723695864633,
   "start_xy": [
    2643434.74348631,
    1165024.7695166296
   ],
   "end_xy": [
    2643434.3226871723,
    1165034.7535962139
   ]
  },
  "max_20m": {
   "gradient_pct": 23.54765839924994,
   "start_distance_m": 140.0,
   "end_distance_m": 160.0,
   "midpoint_distance_m": 150.0,
   "start_elevation_m": 1028.3517907322275,
   "end_elevation_m": 1033.0613224120775,
   "start_xy": [
    2643436.041413989,
    1165051.5656335817
   ],
   "end_xy": [
    2643434.3163296147,
    1165071.4908279325
   ]
  },
  "max_25m": {
   "gradient_pct": 23.14195371641017,
   "start_distance_m": 135.0,
   "end_distance_m": 160.0,
   "midpoint_distance_m": 147.5,
   "start_elevation_m": 1027.275833982975,
   "end_elevation_m": 1033.0613224120775,
   "start_xy": [
    2643435.9829846397,
    1165046.582606246
   ],
   "end_xy": [
    2643434.3163296147,
    1165071.4908279325
   ]
  },
  "max_50m": {
   "gradient_pct": 22.891615535181018,
   "start_distance_m": 110.0,
   "end_distance_m": 160.0,
   "midpoint_distance_m": 135.0,
   "start_elevation_m": 1021.615514644487,
   "end_elevation_m": 1033.0613224120775,
   "start_xy": [
    2643434.0991199114,
    1165021.8395350692
   ],
   "end_xy": [
    2643434.3163296147,
    1165071.4908279325
   ]
  },
  "max_100m": {
   "gradient_pct": 20.450931209286637,
   "start_distance_m": 83.0,
   "end_distance_m": 183.0,
   "midpoint_distance_m": 133.0,
   "start_elevation_m": 1016.9866557689427,
   "end_elevation_m": 1037.4375869782293,
   "start_xy": [
    2643424.6111358507,
    1164996.5802083472
   ],
   "end_xy": [
    2643430.5436911536,
    1165094.089303125
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -70.11012666634315,
   "start_distance_m": 1.0,
   "end_distance_m": 6.0,
   "midpoint_distance_m": 3.5,
   "start_elevation_m": 1013.2533329985179,
   "end_elevation_m": 1009.7478266652007,
   "start_xy": [
    2643449.300512213,
    1164930.3320366445
   ],
   "end_xy": [
    2643447.015250564,
    1164934.7379536426
   ]
  },
  "min_10m": {
   "gradient_pct": -35.15205084641593,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 1013.7568424770518,
   "end_elevation_m": 1010.2416373924102,
   "start_xy": [
    2643449.597,
    1164929.377
   ],
   "end_xy": [
    2643444.2724524066,
    1164937.6409250884
   ]
  },
  "min_20m": {
   "gradient_pct": -9.512056232368309,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 1013.7568424770518,
   "end_elevation_m": 1011.8544312305781,
   "start_xy": [
    2643449.597,
    1164929.377
   ],
   "end_xy": [
    2643436.8693761434,
    1164944.3636077258
   ]
  },
  "min_25m": {
   "gradient_pct": -8.258347737723398,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 1013.7568424770518,
   "end_elevation_m": 1011.692255542621,
   "start_xy": [
    2643449.597,
    1164929.377
   ],
   "end_xy": [
    2643433.1678380123,
    1164947.7249490446
   ]
  },
  "min_50m": {
   "gradient_pct": 0.0010146777549380204,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 1013.7568424770518,
   "end_elevation_m": 1013.7573498159293,
   "start_xy": [
    2643449.597,
    1164929.377
   ],
   "end_xy": [
    2643415.673236794,
    1164965.3753374626
   ]
  },
  "min_100m": {
   "gradient_pct": 5.941514661416704,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 1013.7568424770518,
   "end_elevation_m": 1019.6983571384685,
   "start_xy": [
    2643449.597,
    1164929.377
   ],
   "end_xy": [
    2643430.854418216,
    1165012.3922741613
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 27.259650269127178,
   "start_distance_m": 113.0,
   "end_distance_m": 115.0,
   "midpoint_distance_m": 114.0,
   "start_elevation_m": 1022.2920268770346,
   "end_elevation_m": 1022.8372198824171,
   "start_xy": [
    2643434.74348631,
    1165024.7695166296
   ],
   "end_xy": [
    2643434.721564516,
    1165026.7647583715
   ]
  },
  "max_3m": {
   "gradient_pct": 25.79383644842892,
   "start_distance_m": 128.0,
   "end_distance_m": 131.0,
   "midpoint_distance_m": 129.5,
   "start_elevation_m": 1025.7780880940913,
   "end_elevation_m": 1026.5519031875442,
   "start_xy": [
    2643434.596624187,
    1165039.7323770393
   ],
   "end_xy": [
    2643435.1631331504,
    1165042.6766000951
   ]
  }
 },
 "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": 0.093,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    0.0,
    18.0
   ]
  ],
  "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_2643-1164_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2025_2643-1165_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-11T02:56:29+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-run7-260911",
  "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": [
   "2643-1164",
   "2643-1165"
  ],
  "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)"
 }
}