{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (48.2908, 14.6990)",
 "slug": "discovered-lane-48-2908-14-6990",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.17769426181644,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 88.0,
   "end_distance_m": 90.0,
   "start_elevation_m": 525.3693773565926,
   "end_elevation_m": 525.872931241829,
   "min_gradient_pct": -2.7746926203121802
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 25.039997607207926,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 87.0,
   "end_distance_m": 90.0,
   "start_elevation_m": 525.1217313136127,
   "end_elevation_m": 525.872931241829,
   "min_gradient_pct": -0.28646068397695973
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.92233495816663,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 85.0,
   "end_distance_m": 90.0,
   "start_elevation_m": 524.6268144939206,
   "end_elevation_m": 525.872931241829,
   "min_gradient_pct": 2.0658102144011536
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.7080233687268,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 84.0,
   "end_distance_m": 94.0,
   "start_elevation_m": 524.3799369900214,
   "end_elevation_m": 526.8507393268941,
   "min_gradient_pct": 2.4421076656062723
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.401371117552912,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 81.0,
   "end_distance_m": 101.0,
   "start_elevation_m": 523.6601908444932,
   "end_elevation_m": 528.5404650680038,
   "min_gradient_pct": 2.5606302704341033
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 24.31350023877485,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 83.0,
   "end_distance_m": 108.0,
   "start_elevation_m": 524.1374049008883,
   "end_elevation_m": 530.215779960582,
   "min_gradient_pct": 2.608966543897168
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 23.340487130839392,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 69.0,
   "end_distance_m": 119.0,
   "start_elevation_m": 520.9818289017522,
   "end_elevation_m": 532.6520724671719,
   "min_gradient_pct": 2.8218018785519234
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 21.559253490902673,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 21.0,
   "end_distance_m": 121.0,
   "start_elevation_m": 511.50600446970265,
   "end_elevation_m": 533.0652579606053,
   "min_gradient_pct": 3.4786048587022833
  }
 ],
 "shape": {
  "ascent_concentration": 0.467,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 147.0,
  "shape_class": "stepped"
 },
 "length_m": 881.9000000003774,
 "start_elevation_m": 508.36780893322486,
 "end_elevation_m": 576.304297149577,
 "endpoint_gain_m": 67.93648821635213,
 "overall_gradient_pct": 7.703423088368643,
 "accumulated_ascent_m": 67.99198206875838,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.92233495816663,
   "start_distance_m": 85.0,
   "end_distance_m": 90.0,
   "midpoint_distance_m": 87.5,
   "start_elevation_m": 524.6268144939206,
   "end_elevation_m": 525.872931241829,
   "start_xy": [
    4669566.281918095,
    2808568.158002413
   ],
   "end_xy": [
    4669561.427580912,
    2808566.9599190718
   ]
  },
  "max_10m": {
   "gradient_pct": 24.7080233687268,
   "start_distance_m": 84.0,
   "end_distance_m": 94.0,
   "midpoint_distance_m": 89.0,
   "start_elevation_m": 524.3799369900214,
   "end_elevation_m": 526.8507393268941,
   "start_xy": [
    4669567.252704061,
    2808568.3979495103
   ],
   "end_xy": [
    4669557.544204571,
    2808566.0010732203
   ]
  },
  "max_20m": {
   "gradient_pct": 24.401371117552912,
   "start_distance_m": 81.0,
   "end_distance_m": 101.0,
   "midpoint_distance_m": 91.0,
   "start_elevation_m": 523.6601908444932,
   "end_elevation_m": 528.5404650680038,
   "start_xy": [
    4669570.1652368335,
    2808569.1170811947
   ],
   "end_xy": [
    4669550.748293386,
    2808564.3231031094
   ]
  },
  "max_25m": {
   "gradient_pct": 24.31350023877485,
   "start_distance_m": 83.0,
   "end_distance_m": 108.0,
   "midpoint_distance_m": 95.5,
   "start_elevation_m": 524.1374049008883,
   "end_elevation_m": 530.215779960582,
   "start_xy": [
    4669568.2237205235,
    2808568.636962106
   ],
   "end_xy": [
    4669543.952153637,
    2808562.646060631
   ]
  },
  "max_50m": {
   "gradient_pct": 23.340487130839392,
   "start_distance_m": 69.0,
   "end_distance_m": 119.0,
   "midpoint_distance_m": 94.0,
   "start_elevation_m": 520.9818289017522,
   "end_elevation_m": 532.6520724671719,
   "start_xy": [
    4669582.004010252,
    2808570.7785517597
   ],
   "end_xy": [
    4669533.135973386,
    2808560.8823940046
   ]
  },
  "max_100m": {
   "gradient_pct": 21.559253490902673,
   "start_distance_m": 21.0,
   "end_distance_m": 121.0,
   "midpoint_distance_m": 71.0,
   "start_elevation_m": 511.50600446970265,
   "end_elevation_m": 533.0652579606053,
   "start_xy": [
    4669628.666090689,
    2808564.272950787
   ],
   "end_xy": [
    4669531.140537104,
    2808560.7473647157
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 2.0658102144011536,
   "start_distance_m": 146.0,
   "end_distance_m": 151.0,
   "midpoint_distance_m": 148.5,
   "start_elevation_m": 536.7640098748014,
   "end_elevation_m": 536.8673003855215,
   "start_xy": [
    4669506.51660291,
    2808562.5220949957
   ],
   "end_xy": [
    4669503.925937593,
    2808565.2777992166
   ]
  },
  "min_10m": {
   "gradient_pct": 2.4421076656062723,
   "start_distance_m": 553.0,
   "end_distance_m": 563.0,
   "midpoint_distance_m": 558.0,
   "start_elevation_m": 558.1341354348965,
   "end_elevation_m": 558.3783462014571,
   "start_xy": [
    4669233.819656352,
    2808741.595361523
   ],
   "end_xy": [
    4669223.82708227,
    2808741.2121381
   ]
  },
  "min_20m": {
   "gradient_pct": 2.5606302704341033,
   "start_distance_m": 547.0,
   "end_distance_m": 567.0,
   "midpoint_distance_m": 557.0,
   "start_elevation_m": 557.9705896600698,
   "end_elevation_m": 558.4827157141566,
   "start_xy": [
    4669239.812406799,
    2808741.8902135533
   ],
   "end_xy": [
    4669219.829743811,
    2808741.0662612948
   ]
  },
  "min_25m": {
   "gradient_pct": 2.608966543897168,
   "start_distance_m": 542.0,
   "end_distance_m": 567.0,
   "midpoint_distance_m": 554.5,
   "start_elevation_m": 557.8304740781823,
   "end_elevation_m": 558.4827157141566,
   "start_xy": [
    4669244.806393996,
    2808742.1353486544
   ],
   "end_xy": [
    4669219.829743811,
    2808741.0662612948
   ]
  },
  "min_50m": {
   "gradient_pct": 2.8218018785519234,
   "start_distance_m": 521.0,
   "end_distance_m": 571.0,
   "midpoint_distance_m": 546.0,
   "start_elevation_m": 557.2015231565886,
   "end_elevation_m": 558.6124240958645,
   "start_xy": [
    4669265.781117053,
    2808743.1653841194
   ],
   "end_xy": [
    4669215.846376775,
    2808741.1471353797
   ]
  },
  "min_100m": {
   "gradient_pct": 3.4786048587022833,
   "start_distance_m": 488.0,
   "end_distance_m": 588.0,
   "midpoint_distance_m": 538.0,
   "start_elevation_m": 555.8756480795251,
   "end_elevation_m": 559.3542529382274,
   "start_xy": [
    4669298.741327811,
    2808744.7853878383
   ],
   "end_xy": [
    4669199.625122309,
    2808746.051087064
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.17769426181644,
   "start_distance_m": 88.0,
   "end_distance_m": 90.0,
   "midpoint_distance_m": 89.0,
   "start_elevation_m": 525.3693773565926,
   "end_elevation_m": 525.872931241829,
   "start_xy": [
    4669563.369328176,
    2808567.4391018166
   ],
   "end_xy": [
    4669561.427580912,
    2808566.9599190718
   ]
  },
  "max_3m": {
   "gradient_pct": 25.039997607207926,
   "start_distance_m": 87.0,
   "end_distance_m": 90.0,
   "midpoint_distance_m": 88.5,
   "start_elevation_m": 525.1217313136127,
   "end_elevation_m": 525.872931241829,
   "start_xy": [
    4669564.3401136855,
    2808567.679050756
   ],
   "end_xy": [
    4669561.427580912,
    2808566.9599190718
   ]
  }
 },
 "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": 0.055,
   "obstruction_max_height_m": 14.47,
   "flagged_windows_m": []
  },
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "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_E4668-N2808.tif",
   "data/cache/at/bev-als_dtm_E4669-N2808.tif"
  ],
  "calculated_at": "2026-09-15T21:55:32+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": [
   "E4668-N2808",
   "E4669-N2808"
  ],
  "elevation_blocks": [
   "N2800000E4650000@2022-09-15"
  ],
  "bev_dsm_release": {
   "N2800000E4650000": "20220915"
  },
  "route_cut_m": 881.9,
  "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": "Windhaag bei Perg",
  "county": "Ober\u00f6sterreich",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}