{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (47.9767, 15.0021)",
 "slug": "discovered-lane-47-9767-15-0021",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 26.133141410537064,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1372.0,
   "end_distance_m": 1374.0,
   "start_elevation_m": 549.5180562649625,
   "end_elevation_m": 550.0407190931733,
   "min_gradient_pct": -5.231192274368368
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.9072707315122,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1371.0,
   "end_distance_m": 1374.0,
   "start_elevation_m": 549.2935009712279,
   "end_elevation_m": 550.0407190931733,
   "min_gradient_pct": -4.314397221194592
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.325276952573404,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1369.0,
   "end_distance_m": 1374.0,
   "start_elevation_m": 548.8744552455446,
   "end_elevation_m": 550.0407190931733,
   "min_gradient_pct": -2.297576762106246
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.448869167344583,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1368.0,
   "end_distance_m": 1378.0,
   "start_elevation_m": 548.6444656603564,
   "end_elevation_m": 550.8893525770909,
   "min_gradient_pct": -1.4401612271120712
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.30950745003986,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1364.0,
   "end_distance_m": 1384.0,
   "start_elevation_m": 547.8061185084395,
   "end_elevation_m": 552.0680199984474,
   "min_gradient_pct": -1.0558967034387479
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.038162098556313,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1362.0,
   "end_distance_m": 1387.0,
   "start_elevation_m": 547.4217941915717,
   "end_elevation_m": 552.6813347162108,
   "min_gradient_pct": -0.944293612638603
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.505742169434825,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1360.0,
   "end_distance_m": 1410.0,
   "start_elevation_m": 547.0469685162154,
   "end_elevation_m": 556.7998396009328,
   "min_gradient_pct": 0.6039085560040576
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.29775614588266,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1353.0,
   "end_distance_m": 1453.0,
   "start_elevation_m": 545.8148155901931,
   "end_elevation_m": 565.1125717360758,
   "min_gradient_pct": 3.7957677496417546
  }
 ],
 "shape": {
  "ascent_concentration": 0.47,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 294.0,
  "shape_class": "stepped"
 },
 "length_m": 1483.7548842957353,
 "start_elevation_m": 454.2762678559544,
 "end_elevation_m": 567.6438796515997,
 "endpoint_gain_m": 113.3676117956453,
 "overall_gradient_pct": 7.6405889541152385,
 "accumulated_ascent_m": 113.90011611420476,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.325276952573404,
   "start_distance_m": 1369.0,
   "end_distance_m": 1374.0,
   "midpoint_distance_m": 1371.5,
   "start_elevation_m": 548.8744552455446,
   "end_elevation_m": 550.0407190931733,
   "start_xy": [
    4694325.124034048,
    2775202.438472351
   ],
   "end_xy": [
    4694328.628422691,
    2775198.872065162
   ]
  },
  "max_10m": {
   "gradient_pct": 22.448869167344583,
   "start_distance_m": 1368.0,
   "end_distance_m": 1378.0,
   "midpoint_distance_m": 1373.0,
   "start_elevation_m": 548.6444656603564,
   "end_elevation_m": 550.8893525770909,
   "start_xy": [
    4694324.423156319,
    2775203.151753789
   ],
   "end_xy": [
    4694330.338542351,
    2775195.2689161003
   ]
  },
  "max_20m": {
   "gradient_pct": 21.30950745003986,
   "start_distance_m": 1364.0,
   "end_distance_m": 1384.0,
   "midpoint_distance_m": 1374.0,
   "start_elevation_m": 547.8061185084395,
   "end_elevation_m": 552.0680199984474,
   "start_xy": [
    4694321.315063371,
    2775205.6524964687
   ],
   "end_xy": [
    4694330.068980202,
    2775189.378882717
   ]
  },
  "max_25m": {
   "gradient_pct": 21.038162098556313,
   "start_distance_m": 1362.0,
   "end_distance_m": 1387.0,
   "midpoint_distance_m": 1374.5,
   "start_elevation_m": 547.4217941915717,
   "end_elevation_m": 552.6813347162108,
   "start_xy": [
    4694319.700615284,
    2775206.8329867795
   ],
   "end_xy": [
    4694329.200864339,
    2775186.5072325207
   ]
  },
  "max_50m": {
   "gradient_pct": 19.505742169434825,
   "start_distance_m": 1360.0,
   "end_distance_m": 1410.0,
   "midpoint_distance_m": 1385.0,
   "start_elevation_m": 547.0469685162154,
   "end_elevation_m": 556.7998396009328,
   "start_xy": [
    4694318.086167197,
    2775208.0134770903
   ],
   "end_xy": [
    4694320.987481019,
    2775165.0388900144
   ]
  },
  "max_100m": {
   "gradient_pct": 19.29775614588266,
   "start_distance_m": 1353.0,
   "end_distance_m": 1453.0,
   "midpoint_distance_m": 1403.0,
   "start_elevation_m": 545.8148155901931,
   "end_elevation_m": 565.1125717360758,
   "start_xy": [
    4694312.435598892,
    2775212.145193178
   ],
   "end_xy": [
    4694325.387290226,
    2775130.7819838687
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -2.297576762106246,
   "start_distance_m": 168.0,
   "end_distance_m": 173.0,
   "midpoint_distance_m": 170.5,
   "start_elevation_m": 464.35594691169393,
   "end_elevation_m": 464.2410680735886,
   "start_xy": [
    4694871.1409028005,
    2775981.034157959
   ],
   "end_xy": [
    4694875.193760563,
    2775978.8782779654
   ]
  },
  "min_10m": {
   "gradient_pct": -1.4401612271120712,
   "start_distance_m": 18.0,
   "end_distance_m": 28.0,
   "midpoint_distance_m": 23.0,
   "start_elevation_m": 454.29268900266413,
   "end_elevation_m": 454.1486728799529,
   "start_xy": [
    4694725.062702229,
    2775959.9937629853
   ],
   "end_xy": [
    4694733.399759023,
    2775965.5158535326
   ]
  },
  "min_20m": {
   "gradient_pct": -1.0558967034387479,
   "start_distance_m": 10.0,
   "end_distance_m": 30.0,
   "midpoint_distance_m": 20.0,
   "start_elevation_m": 454.3340070264312,
   "end_elevation_m": 454.12282768574346,
   "start_xy": [
    4694718.393056794,
    2775955.5760905473
   ],
   "end_xy": [
    4694735.067170382,
    2775966.620271642
   ]
  },
  "min_25m": {
   "gradient_pct": -0.944293612638603,
   "start_distance_m": 10.0,
   "end_distance_m": 35.0,
   "midpoint_distance_m": 22.5,
   "start_elevation_m": 454.3340070264312,
   "end_elevation_m": 454.09793362327156,
   "start_xy": [
    4694718.393056794,
    2775955.5760905473
   ],
   "end_xy": [
    4694739.3016709965,
    2775969.255127433
   ]
  },
  "min_50m": {
   "gradient_pct": 0.6039085560040576,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 454.2762678559544,
   "end_elevation_m": 454.57822213395644,
   "start_xy": [
    4694710.056,
    2775950.054
   ],
   "end_xy": [
    4694753.713470173,
    2775973.187809226
   ]
  },
  "min_100m": {
   "gradient_pct": 3.7957677496417546,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 454.2762678559544,
   "end_elevation_m": 458.07203560559617,
   "start_xy": [
    4694710.056,
    2775950.054
   ],
   "end_xy": [
    4694803.229514381,
    2775980.073089452
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 26.133141410537064,
   "start_distance_m": 1372.0,
   "end_distance_m": 1374.0,
   "midpoint_distance_m": 1373.0,
   "start_elevation_m": 549.5180562649625,
   "end_elevation_m": 550.0407190931733,
   "start_xy": [
    4694327.226667234,
    2775200.2986280373
   ],
   "end_xy": [
    4694328.628422691,
    2775198.872065162
   ]
  },
  "max_3m": {
   "gradient_pct": 24.9072707315122,
   "start_distance_m": 1371.0,
   "end_distance_m": 1374.0,
   "midpoint_distance_m": 1372.5,
   "start_elevation_m": 549.2935009712279,
   "end_elevation_m": 550.0407190931733,
   "start_xy": [
    4694326.525789505,
    2775201.011909475
   ],
   "end_xy": [
    4694328.628422691,
    2775198.872065162
   ]
  }
 },
 "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": 0.044,
   "obstruction_max_height_m": 13.57,
   "flagged_windows_m": []
  },
  "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:3035",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/at/bev-als_dtm_E4694-N2775.tif",
   "data/cache/at/bev-als_dtm_E4694-N2776.tif"
  ],
  "calculated_at": "2026-09-11T07:27:29+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/austria-2026-09-11-batch.osm.pbf",
  "osm_snapshot": "",
  "run_id": "at-run1-260911",
  "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": [
   "E4694-N2775",
   "E4694-N2776"
  ],
  "elevation_blocks": [
   "N2750000E4650000@2022-09-15"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Gresten-Land",
  "county": "Nieder\u00f6sterreich",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}