{
 "ocl_version": "0.1.0",
 "name": "Birkhahnweg",
 "slug": "birkhahnweg",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 23.248933146510353,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 94.0,
   "end_distance_m": 96.0,
   "start_elevation_m": 1639.2394700438742,
   "end_elevation_m": 1639.7044487068044,
   "min_gradient_pct": 8.391464585417907
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.36979877468457,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 93.0,
   "end_distance_m": 96.0,
   "start_elevation_m": 1639.033354743564,
   "end_elevation_m": 1639.7044487068044,
   "min_gradient_pct": 9.223670518304061
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.479357178927785,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 91.0,
   "end_distance_m": 96.0,
   "start_elevation_m": 1638.630480847858,
   "end_elevation_m": 1639.7044487068044,
   "min_gradient_pct": 10.48005833478328
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.972718187597366,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 102.0,
   "end_distance_m": 112.0,
   "start_elevation_m": 1640.8843307289458,
   "end_elevation_m": 1642.9816025477055,
   "min_gradient_pct": 11.021139568047147
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.74659770607923,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 93.0,
   "end_distance_m": 113.0,
   "start_elevation_m": 1639.033354743564,
   "end_elevation_m": 1643.1826742847798,
   "min_gradient_pct": 11.124198805302967
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.56664437053678,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 89.0,
   "end_distance_m": 114.0,
   "start_elevation_m": 1638.220390185122,
   "end_elevation_m": 1643.362051277756,
   "min_gradient_pct": 11.823788712347778
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.859818867902504,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 68.0,
   "end_distance_m": 118.0,
   "start_elevation_m": 1634.597689183069,
   "end_elevation_m": 1644.0275986170202,
   "min_gradient_pct": 14.321699621178595
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.91734330041595,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 53.0,
   "end_distance_m": 153.0,
   "start_elevation_m": 1632.1235664681549,
   "end_elevation_m": 1650.0409097685708,
   "min_gradient_pct": 16.02971720230903
  }
 ],
 "shape": {
  "ascent_concentration": 0.29,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 202.0,
  "shape_class": "sustained"
 },
 "length_m": 202.49999999967625,
 "start_elevation_m": 1624.4769309379446,
 "end_elevation_m": 1657.6138869430797,
 "endpoint_gain_m": 33.13695600513506,
 "overall_gradient_pct": 16.363928891450882,
 "accumulated_ascent_m": 33.13695600513506,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.479357178927785,
   "start_distance_m": 91.0,
   "end_distance_m": 96.0,
   "midpoint_distance_m": 93.5,
   "start_elevation_m": 1638.630480847858,
   "end_elevation_m": 1639.7044487068044,
   "start_xy": [
    4625536.153365255,
    2646681.801006541
   ],
   "end_xy": [
    4625531.1639661975,
    2646682.1259268536
   ]
  },
  "max_10m": {
   "gradient_pct": 20.972718187597366,
   "start_distance_m": 102.0,
   "end_distance_m": 112.0,
   "midpoint_distance_m": 107.0,
   "start_elevation_m": 1640.8843307289458,
   "end_elevation_m": 1642.9816025477055,
   "start_xy": [
    4625525.173906212,
    2646682.471139579
   ],
   "end_xy": [
    4625515.19055402,
    2646683.0479052314
   ]
  },
  "max_20m": {
   "gradient_pct": 20.74659770607923,
   "start_distance_m": 93.0,
   "end_distance_m": 113.0,
   "midpoint_distance_m": 103.0,
   "start_elevation_m": 1639.033354743564,
   "end_elevation_m": 1643.1826742847798,
   "start_xy": [
    4625534.157861576,
    2646681.935040355
   ],
   "end_xy": [
    4625514.192193073,
    2646683.105135072
   ]
  },
  "max_25m": {
   "gradient_pct": 20.56664437053678,
   "start_distance_m": 89.0,
   "end_distance_m": 114.0,
   "midpoint_distance_m": 101.5,
   "start_elevation_m": 1638.220390185122,
   "end_elevation_m": 1643.362051277756,
   "start_xy": [
    4625538.1489397595,
    2646681.6680351063
   ],
   "end_xy": [
    4625513.193864842,
    2646683.1629326367
   ]
  },
  "max_50m": {
   "gradient_pct": 18.859818867902504,
   "start_distance_m": 68.0,
   "end_distance_m": 118.0,
   "midpoint_distance_m": 93.0,
   "start_elevation_m": 1634.597689183069,
   "end_elevation_m": 1644.0275986170202,
   "start_xy": [
    4625559.101952219,
    2646680.26403427
   ],
   "end_xy": [
    4625509.200494025,
    2646683.3931175815
   ]
  },
  "max_100m": {
   "gradient_pct": 17.91734330041595,
   "start_distance_m": 53.0,
   "end_distance_m": 153.0,
   "midpoint_distance_m": 103.0,
   "start_elevation_m": 1632.1235664681549,
   "end_elevation_m": 1650.0409097685708,
   "start_xy": [
    4625574.069909837,
    2646679.337212112
   ],
   "end_xy": [
    4625474.258652222,
    2646685.4098996227
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 10.48005833478328,
   "start_distance_m": 194.0,
   "end_distance_m": 199.0,
   "midpoint_distance_m": 196.5,
   "start_elevation_m": 1656.671508858658,
   "end_elevation_m": 1657.195511775397,
   "start_xy": [
    4625433.395010813,
    2646685.0108633586
   ],
   "end_xy": [
    4625428.4249133915,
    2646684.464852676
   ]
  },
  "min_10m": {
   "gradient_pct": 11.021139568047147,
   "start_distance_m": 1.0,
   "end_distance_m": 11.0,
   "midpoint_distance_m": 6.0,
   "start_elevation_m": 1624.5986269699454,
   "end_elevation_m": 1625.70074092675,
   "start_xy": [
    4625625.519494892,
    2646685.0736808307
   ],
   "end_xy": [
    4625615.92990212,
    2646682.760049121
   ]
  },
  "min_20m": {
   "gradient_pct": 11.124198805302967,
   "start_distance_m": 2.0,
   "end_distance_m": 22.0,
   "midpoint_distance_m": 12.0,
   "start_elevation_m": 1624.7046083247199,
   "end_elevation_m": 1626.9294480857805,
   "start_xy": [
    4625624.610159962,
    2646684.6576159825
   ],
   "end_xy": [
    4625604.966702528,
    2646681.8610327053
   ]
  },
  "min_25m": {
   "gradient_pct": 11.823788712347778,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 1624.4769309379446,
   "end_elevation_m": 1627.4328781160316,
   "start_xy": [
    4625626.428935979,
    2646685.48951359
   ],
   "end_xy": [
    4625601.976723569,
    2646681.616034436
   ]
  },
  "min_50m": {
   "gradient_pct": 14.321699621178595,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 1624.4769309379446,
   "end_elevation_m": 1631.637780748534,
   "start_xy": [
    4625626.428935979,
    2646685.48951359
   ],
   "end_xy": [
    4625577.060421453,
    2646679.572074859
   ]
  },
  "min_100m": {
   "gradient_pct": 16.02971720230903,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 1624.4769309379446,
   "end_elevation_m": 1640.5066481402537,
   "start_xy": [
    4625626.428935979,
    2646685.48951359
   ],
   "end_xy": [
    4625527.170595374,
    2646682.356111692
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 23.248933146510353,
   "start_distance_m": 94.0,
   "end_distance_m": 96.0,
   "midpoint_distance_m": 95.0,
   "start_elevation_m": 1639.2394700438742,
   "end_elevation_m": 1639.7044487068044,
   "start_xy": [
    4625533.1601074925,
    2646682.0020238454
   ],
   "end_xy": [
    4625531.1639661975,
    2646682.1259268536
   ]
  },
  "max_3m": {
   "gradient_pct": 22.36979877468457,
   "start_distance_m": 93.0,
   "end_distance_m": 96.0,
   "midpoint_distance_m": 94.5,
   "start_elevation_m": 1639.033354743564,
   "end_elevation_m": 1639.7044487068044,
   "start_xy": [
    4625534.157861576,
    2646681.935040355
   ],
   "end_xy": [
    4625531.1639661975,
    2646682.1259268536
   ]
  }
 },
 "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": 0.103,
   "obstruction_max_height_m": 8.64,
   "flagged_windows_m": []
  },
  "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_E4625-N2646.tif"
  ],
  "calculated_at": "2026-09-11T18:50:26+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-extent-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": [
   "E4625-N2646"
  ],
  "elevation_blocks": [
   "N2600000E4600000@2022-09-15"
  ],
  "route_base_cut_m": 162.0,
  "route_cut_m": 202.5,
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Albeck",
  "county": "K\u00e4rnten",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}