{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (46.7006, 15.4852)",
 "slug": "discovered-lane-46-7006-15-4852",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 29.595650013249042,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1135.0,
   "end_distance_m": 1137.0,
   "start_elevation_m": 419.99039598459996,
   "end_elevation_m": 420.58230898486494,
   "min_gradient_pct": -10.278871363544795
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.88995667007536,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1135.0,
   "end_distance_m": 1138.0,
   "start_elevation_m": 419.99039598459996,
   "end_elevation_m": 420.8270946847022,
   "min_gradient_pct": -9.289003047556813
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.48349908958312,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1135.0,
   "end_distance_m": 1140.0,
   "start_elevation_m": 419.99039598459996,
   "end_elevation_m": 421.1645709390791,
   "min_gradient_pct": -9.020323707239868
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.76615333671259,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1105.0,
   "end_distance_m": 1115.0,
   "start_elevation_m": 414.3730634985497,
   "end_elevation_m": 416.64967883222096,
   "min_gradient_pct": -7.749262270870645
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.0625613062399,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1107.0,
   "end_distance_m": 1127.0,
   "start_elevation_m": 414.84306064151104,
   "end_elevation_m": 419.055572902759,
   "min_gradient_pct": -6.043397757972002
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.509888617055594,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1105.0,
   "end_distance_m": 1130.0,
   "start_elevation_m": 414.3730634985497,
   "end_elevation_m": 419.5005356528136,
   "min_gradient_pct": -5.166905750294063
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.64528739463674,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 994.0,
   "end_distance_m": 1044.0,
   "start_elevation_m": 396.97929632418516,
   "end_elevation_m": 406.8019400215035,
   "min_gradient_pct": -1.917182192622704
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.16277666782247,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 947.0,
   "end_distance_m": 1047.0,
   "start_elevation_m": 389.19647442184055,
   "end_elevation_m": 407.359251089663,
   "min_gradient_pct": 0.9196267537709559
  }
 ],
 "shape": {
  "ascent_concentration": 0.525,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 226.0,
  "shape_class": "stepped"
 },
 "length_m": 1178.9000000000817,
 "start_elevation_m": 343.458762512165,
 "end_elevation_m": 424.6046522356422,
 "endpoint_gain_m": 81.14588972347724,
 "overall_gradient_pct": 6.883186845658802,
 "accumulated_ascent_m": 84.50465850575773,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.48349908958312,
   "start_distance_m": 1135.0,
   "end_distance_m": 1140.0,
   "midpoint_distance_m": 1137.5,
   "start_elevation_m": 419.99039598459996,
   "end_elevation_m": 421.1645709390791,
   "start_xy": [
    4740350.320875577,
    2636236.9815372783
   ],
   "end_xy": [
    4740350.722073898,
    2636241.6390539156
   ]
  },
  "max_10m": {
   "gradient_pct": 22.76615333671259,
   "start_distance_m": 1105.0,
   "end_distance_m": 1115.0,
   "midpoint_distance_m": 1110.0,
   "start_elevation_m": 414.3730634985497,
   "end_elevation_m": 416.64967883222096,
   "start_xy": [
    4740377.256576891,
    2636239.0977179273
   ],
   "end_xy": [
    4740367.8209852055,
    2636235.8086862653
   ]
  },
  "max_20m": {
   "gradient_pct": 21.0625613062399,
   "start_distance_m": 1107.0,
   "end_distance_m": 1127.0,
   "midpoint_distance_m": 1117.0,
   "start_elevation_m": 414.84306064151104,
   "end_elevation_m": 419.055572902759,
   "start_xy": [
    4740375.390747585,
    2636238.3968671784
   ],
   "end_xy": [
    4740356.465535433,
    2636232.654445377
   ]
  },
  "max_25m": {
   "gradient_pct": 20.509888617055594,
   "start_distance_m": 1105.0,
   "end_distance_m": 1130.0,
   "midpoint_distance_m": 1117.5,
   "start_elevation_m": 414.3730634985497,
   "end_elevation_m": 419.5005356528136,
   "start_xy": [
    4740377.256576891,
    2636239.0977179273
   ],
   "end_xy": [
    4740353.747983412,
    2636233.925236222
   ]
  },
  "max_50m": {
   "gradient_pct": 19.64528739463674,
   "start_distance_m": 994.0,
   "end_distance_m": 1044.0,
   "midpoint_distance_m": 1019.0,
   "start_elevation_m": 396.97929632418516,
   "end_elevation_m": 406.8019400215035,
   "start_xy": [
    4740467.797875523,
    2636301.0733296904
   ],
   "end_xy": [
    4740422.896043157,
    2636279.077306224
   ]
  },
  "max_100m": {
   "gradient_pct": 18.16277666782247,
   "start_distance_m": 947.0,
   "end_distance_m": 1047.0,
   "midpoint_distance_m": 997.0,
   "start_elevation_m": 389.19647442184055,
   "end_elevation_m": 407.359251089663,
   "start_xy": [
    4740475.01315187,
    2636275.3738143393
   ],
   "end_xy": [
    4740420.202048545,
    2636277.757308864
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -9.020323707239868,
   "start_distance_m": 729.0,
   "end_distance_m": 734.0,
   "midpoint_distance_m": 731.5,
   "start_elevation_m": 372.1447866931914,
   "end_elevation_m": 371.6937705078294,
   "start_xy": [
    4740648.428582257,
    2636295.547671979
   ],
   "end_xy": [
    4740643.705545694,
    2636297.1886846693
   ]
  },
  "min_10m": {
   "gradient_pct": -7.749262270870645,
   "start_distance_m": 729.0,
   "end_distance_m": 739.0,
   "midpoint_distance_m": 734.0,
   "start_elevation_m": 372.1447866931914,
   "end_elevation_m": 371.36986046610434,
   "start_xy": [
    4740648.428582257,
    2636295.547671979
   ],
   "end_xy": [
    4740638.982509131,
    2636298.82969736
   ]
  },
  "min_20m": {
   "gradient_pct": -6.043397757972002,
   "start_distance_m": 728.0,
   "end_distance_m": 748.0,
   "midpoint_distance_m": 738.0,
   "start_elevation_m": 372.1642076497735,
   "end_elevation_m": 370.9555280981791,
   "start_xy": [
    4740649.373199692,
    2636295.219498412
   ],
   "end_xy": [
    4740630.481054043,
    2636301.783549019
   ]
  },
  "min_25m": {
   "gradient_pct": -5.166905750294063,
   "start_distance_m": 728.0,
   "end_distance_m": 753.0,
   "midpoint_distance_m": 740.5,
   "start_elevation_m": 372.1642076497735,
   "end_elevation_m": 370.8724812122,
   "start_xy": [
    4740649.373199692,
    2636295.219498412
   ],
   "end_xy": [
    4740625.562558201,
    2636301.6304266476
   ]
  },
  "min_50m": {
   "gradient_pct": -1.917182192622704,
   "start_distance_m": 46.0,
   "end_distance_m": 96.0,
   "midpoint_distance_m": 71.0,
   "start_elevation_m": 347.4246635214597,
   "end_elevation_m": 346.46607242514835,
   "start_xy": [
    4741155.361023724,
    2635893.6916486123
   ],
   "end_xy": [
    4741107.573803294,
    2635908.0343303853
   ]
  },
  "min_100m": {
   "gradient_pct": 0.9196267537709559,
   "start_distance_m": 43.0,
   "end_distance_m": 143.0,
   "midpoint_distance_m": 93.0,
   "start_elevation_m": 347.2867794245152,
   "end_elevation_m": 348.20640617828616,
   "start_xy": [
    4741158.321731115,
    2635893.207696343
   ],
   "end_xy": [
    4741063.576577506,
    2635924.5644152965
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 29.595650013249042,
   "start_distance_m": 1135.0,
   "end_distance_m": 1137.0,
   "midpoint_distance_m": 1136.0,
   "start_elevation_m": 419.99039598459996,
   "end_elevation_m": 420.58230898486494,
   "start_xy": [
    4740350.320875577,
    2636236.9815372783
   ],
   "end_xy": [
    4740350.023766733,
    2636238.959345425
   ]
  },
  "max_3m": {
   "gradient_pct": 27.88995667007536,
   "start_distance_m": 1135.0,
   "end_distance_m": 1138.0,
   "midpoint_distance_m": 1136.5,
   "start_elevation_m": 419.99039598459996,
   "end_elevation_m": 420.8270946847022,
   "start_xy": [
    4740350.320875577,
    2636236.9815372783
   ],
   "end_xy": [
    4740349.875672244,
    2636239.94831859
   ]
  }
 },
 "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": {
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.753,
   "obstruction_max_height_m": 32.18,
   "flagged_windows_m": [
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "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:3035",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/at/bev-als_dtm_E4740-N2635.tif",
   "data/cache/at/bev-als_dtm_E4740-N2636.tif",
   "data/cache/at/bev-als_dtm_E4741-N2635.tif",
   "data/cache/at/bev-als_dtm_E4741-N2636.tif"
  ],
  "calculated_at": "2026-09-15T21:37:14+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/austria-2026-09-11.osm.pbf",
  "osm_snapshot": "2026-09-10T20:21:06Z",
  "run_id": "retro-260915-dogleg-all",
  "elevation_provider": "BEV ALS DTM 1 m",
  "elevation_licence": "Creative Commons Attribution 4.0 (CC BY 4.0) \u2014 \u00a9 BEV / L\u00e4nder, data.gv.at",
  "elevation_dataset": "ALS DTM H\u00f6henraster 1 m (Bundesamt f\u00fcr Eich- und Vermessungswesen with the L\u00e4nder), EPSG:3035",
  "elevation_tile_ids": [
   "E4740-N2635",
   "E4740-N2636",
   "E4741-N2635",
   "E4741-N2636"
  ],
  "elevation_blocks": [
   "N2600000E4700000@2022-09-15"
  ],
  "bev_dsm_release": {
   "N2600000E4700000": "20220915"
  },
  "route_cut_m": 1178.9,
  "climb_origin": "discovered",
  "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": "Leutschach an der Weinstra\u00dfe",
  "county": "Steiermark",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}