{
 "ocl_version": "0.1.0",
 "name": "Talweg",
 "slug": "talweg",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 30.099922577210236,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 29.0,
   "end_distance_m": 31.0,
   "start_elevation_m": 954.9899403170027,
   "end_elevation_m": 955.5919387685469,
   "min_gradient_pct": -0.159584898455023
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 30.144174940577766,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 27.0,
   "end_distance_m": 30.0,
   "start_elevation_m": 954.3888391082689,
   "end_elevation_m": 955.2931643564863,
   "min_gradient_pct": 0.061886589776349865
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 30.014114221053205,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 27.0,
   "end_distance_m": 32.0,
   "start_elevation_m": 954.3888391082689,
   "end_elevation_m": 955.8895448193216,
   "min_gradient_pct": 0.49461401685448436
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 28.596227542767565,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 25.0,
   "end_distance_m": 35.0,
   "start_elevation_m": 953.8604789469289,
   "end_elevation_m": 956.7201017012056,
   "min_gradient_pct": 1.1781969297544492
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 25.3981268429834,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 154.0,
   "end_distance_m": 174.0,
   "start_elevation_m": 977.4501026469444,
   "end_elevation_m": 982.5297280155411,
   "min_gradient_pct": 1.5797486059591392
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 25.073971810461444,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 152.0,
   "end_distance_m": 177.0,
   "start_elevation_m": 976.9737108839793,
   "end_elevation_m": 983.2422038365946,
   "min_gradient_pct": 1.8643738854862022
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 24.234820148155677,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 127.0,
   "end_distance_m": 177.0,
   "start_elevation_m": 971.1247937625168,
   "end_elevation_m": 983.2422038365946,
   "min_gradient_pct": 4.393616507646357
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 22.0761493698202,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 82.0,
   "end_distance_m": 182.0,
   "start_elevation_m": 962.0720944761333,
   "end_elevation_m": 984.1482438459535,
   "min_gradient_pct": 11.37310880855091
  }
 ],
 "shape": {
  "ascent_concentration": 0.373,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 149.0,
  "shape_class": "sustained"
 },
 "length_m": 261.19999999981013,
 "start_elevation_m": 948.86639343079,
 "end_elevation_m": 990.5920518937637,
 "endpoint_gain_m": 41.72565846297368,
 "overall_gradient_pct": 15.974601249235839,
 "accumulated_ascent_m": 41.73302598104033,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 30.014114221053205,
   "start_distance_m": 27.0,
   "end_distance_m": 32.0,
   "midpoint_distance_m": 29.5,
   "start_elevation_m": 954.3888391082689,
   "end_elevation_m": 955.8895448193216,
   "start_xy": [
    4618516.286728374,
    2705799.5507515618
   ],
   "end_xy": [
    4618519.974822731,
    2705802.9268376236
   ]
  },
  "max_10m": {
   "gradient_pct": 28.596227542767565,
   "start_distance_m": 25.0,
   "end_distance_m": 35.0,
   "midpoint_distance_m": 30.0,
   "start_elevation_m": 953.8604789469289,
   "end_elevation_m": 956.7201017012056,
   "start_xy": [
    4618514.811424786,
    2705798.2003891
   ],
   "end_xy": [
    4618522.188069218,
    2705804.952063309
   ]
  },
  "max_20m": {
   "gradient_pct": 25.3981268429834,
   "start_distance_m": 154.0,
   "end_distance_m": 174.0,
   "midpoint_distance_m": 164.0,
   "start_elevation_m": 977.4501026469444,
   "end_elevation_m": 982.5297280155411,
   "start_xy": [
    4618472.039272693,
    2705874.6365687754
   ],
   "end_xy": [
    4618452.81728199,
    2705880.019524716
   ]
  },
  "max_25m": {
   "gradient_pct": 25.073971810461444,
   "start_distance_m": 152.0,
   "end_distance_m": 177.0,
   "midpoint_distance_m": 164.5,
   "start_elevation_m": 976.9737108839793,
   "end_elevation_m": 983.2422038365946,
   "start_xy": [
    4618473.980538323,
    2705874.1554385195
   ],
   "end_xy": [
    4618450.098981832,
    2705881.279333666
   ]
  },
  "max_50m": {
   "gradient_pct": 24.234820148155677,
   "start_distance_m": 127.0,
   "end_distance_m": 177.0,
   "midpoint_distance_m": 152.0,
   "start_elevation_m": 971.1247937625168,
   "end_elevation_m": 983.2422038365946,
   "start_xy": [
    4618498.235166219,
    2705868.0967778345
   ],
   "end_xy": [
    4618450.098981832,
    2705881.279333666
   ]
  },
  "max_100m": {
   "gradient_pct": 22.0761493698202,
   "start_distance_m": 82.0,
   "end_distance_m": 182.0,
   "midpoint_distance_m": 132.0,
   "start_elevation_m": 962.0720944761333,
   "end_elevation_m": 984.1482438459535,
   "start_xy": [
    4618535.221574417,
    2705847.131577008
   ],
   "end_xy": [
    4618446.855656573,
    2705884.9593748455
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.49461401685448436,
   "start_distance_m": 223.0,
   "end_distance_m": 228.0,
   "midpoint_distance_m": 225.5,
   "start_elevation_m": 989.6279220442023,
   "end_elevation_m": 989.652652745045,
   "start_xy": [
    4618443.374156093,
    2705923.567228097
   ],
   "end_xy": [
    4618440.010642833,
    2705919.8676637392
   ]
  },
  "min_10m": {
   "gradient_pct": 1.1781969297544492,
   "start_distance_m": 223.0,
   "end_distance_m": 233.0,
   "midpoint_distance_m": 228.0,
   "start_elevation_m": 989.6279220442023,
   "end_elevation_m": 989.7457417371777,
   "start_xy": [
    4618443.374156093,
    2705923.567228097
   ],
   "end_xy": [
    4618436.647365687,
    2705916.1678848346
   ]
  },
  "min_20m": {
   "gradient_pct": 1.5797486059591392,
   "start_distance_m": 223.0,
   "end_distance_m": 243.0,
   "midpoint_distance_m": 233.0,
   "start_elevation_m": 989.6279220442023,
   "end_elevation_m": 989.9438717653941,
   "start_xy": [
    4618443.374156093,
    2705923.567228097
   ],
   "end_xy": [
    4618430.47027888,
    2705908.309976878
   ]
  },
  "min_25m": {
   "gradient_pct": 1.8643738854862022,
   "start_distance_m": 223.0,
   "end_distance_m": 248.0,
   "midpoint_distance_m": 235.5,
   "start_elevation_m": 989.6279220442023,
   "end_elevation_m": 990.0940155155738,
   "start_xy": [
    4618443.374156093,
    2705923.567228097
   ],
   "end_xy": [
    4618427.443799615,
    2705904.3299743696
   ]
  },
  "min_50m": {
   "gradient_pct": 4.393616507646357,
   "start_distance_m": 211.0,
   "end_distance_m": 261.0,
   "midpoint_distance_m": 236.0,
   "start_elevation_m": 988.3859237379215,
   "end_elevation_m": 990.5827319917447,
   "start_xy": [
    4618446.823597451,
    2705913.595960789
   ],
   "end_xy": [
    4618420.163255331,
    2705893.568580521
   ]
  },
  "min_100m": {
   "gradient_pct": 11.37310880855091,
   "start_distance_m": 161.0,
   "end_distance_m": 261.0,
   "midpoint_distance_m": 211.0,
   "start_elevation_m": 979.2096231831938,
   "end_elevation_m": 990.5827319917447,
   "start_xy": [
    4618465.245041942,
    2705876.3213298284
   ],
   "end_xy": [
    4618420.163255331,
    2705893.568580521
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 30.099922577210236,
   "start_distance_m": 29.0,
   "end_distance_m": 31.0,
   "midpoint_distance_m": 30.0,
   "start_elevation_m": 954.9899403170027,
   "end_elevation_m": 955.5919387685469,
   "start_xy": [
    4618517.762074222,
    2705800.9010678856
   ],
   "end_xy": [
    4618519.237419785,
    2705802.251384519
   ]
  },
  "max_3m": {
   "gradient_pct": 30.144174940577766,
   "start_distance_m": 27.0,
   "end_distance_m": 30.0,
   "midpoint_distance_m": 28.5,
   "start_elevation_m": 954.3888391082689,
   "end_elevation_m": 955.2931643564863,
   "start_xy": [
    4618516.286728374,
    2705799.5507515618
   ],
   "end_xy": [
    4618518.499974981,
    2705801.5759771164
   ]
  }
 },
 "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": 0.03,
   "obstruction_max_height_m": 4.73,
   "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_E4618-N2705.tif"
  ],
  "calculated_at": "2026-09-11T19:08:37+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": [
   "E4618-N2705"
  ],
  "elevation_blocks": [
   "N2700000E4600000@2022-09-15"
  ],
  "route_cut_m": 261.2,
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "S\u00f6lk",
  "county": "Steiermark",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}