{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (50.8837, -2.6671)",
 "slug": "discovered-lane-50-8837-2-6671",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 27.712670141762175,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 763.0,
   "end_distance_m": 765.0,
   "start_elevation_m": 120.16674191358558,
   "end_elevation_m": 120.72099531642083,
   "min_gradient_pct": -7.1113147345162275
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 26.117453164655064,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 762.0,
   "end_distance_m": 765.0,
   "start_elevation_m": 119.93747172148117,
   "end_elevation_m": 120.72099531642083,
   "min_gradient_pct": -5.721960160573521
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.11093919536711,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 798.0,
   "end_distance_m": 803.0,
   "start_elevation_m": 127.44468066791467,
   "end_elevation_m": 128.65022762768302,
   "min_gradient_pct": -5.345051430766148
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.533618848866524,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 793.0,
   "end_distance_m": 803.0,
   "start_elevation_m": 126.29686574279637,
   "end_elevation_m": 128.65022762768302,
   "min_gradient_pct": -3.1905541653674163
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.11359500704377,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 792.0,
   "end_distance_m": 812.0,
   "start_elevation_m": 126.0709612819734,
   "end_elevation_m": 130.69368028338215,
   "min_gradient_pct": -2.5624018603603815
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.98003821104021,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 787.0,
   "end_distance_m": 812.0,
   "start_elevation_m": 124.9486707306221,
   "end_elevation_m": 130.69368028338215,
   "min_gradient_pct": -2.747276439578968
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.512417123801953,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 762.0,
   "end_distance_m": 812.0,
   "start_elevation_m": 119.93747172148117,
   "end_elevation_m": 130.69368028338215,
   "min_gradient_pct": -1.149355043399396
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.549047378092197,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 722.0,
   "end_distance_m": 822.0,
   "start_elevation_m": 113.06182353479566,
   "end_elevation_m": 132.61087091288786,
   "min_gradient_pct": 2.903302172828006
  }
 ],
 "shape": {
  "ascent_concentration": 0.398,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 159.0,
  "shape_class": "sustained"
 },
 "length_m": 922.1646288590192,
 "start_elevation_m": 60.491675164949,
 "end_elevation_m": 135.51111061523412,
 "endpoint_gain_m": 75.01943545028512,
 "overall_gradient_pct": 8.135145623954973,
 "accumulated_ascent_m": 77.32631279295205,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.11093919536711,
   "start_distance_m": 798.0,
   "end_distance_m": 803.0,
   "midpoint_distance_m": 800.5,
   "start_elevation_m": 127.44468066791467,
   "end_elevation_m": 128.65022762768302,
   "start_xy": [
    353253.7775989127,
    109496.5418492375
   ],
   "end_xy": [
    353249.5540413449,
    109499.21795862823
   ]
  },
  "max_10m": {
   "gradient_pct": 23.533618848866524,
   "start_distance_m": 793.0,
   "end_distance_m": 803.0,
   "midpoint_distance_m": 798.0,
   "start_elevation_m": 126.29686574279637,
   "end_elevation_m": 128.65022762768302,
   "start_xy": [
    353258.0011564806,
    109493.86573984678
   ],
   "end_xy": [
    353249.5540413449,
    109499.21795862823
   ]
  },
  "max_20m": {
   "gradient_pct": 23.11359500704377,
   "start_distance_m": 792.0,
   "end_distance_m": 812.0,
   "midpoint_distance_m": 802.0,
   "start_elevation_m": 126.0709612819734,
   "end_elevation_m": 130.69368028338215,
   "start_xy": [
    353258.8458679941,
    109493.33051796864
   ],
   "end_xy": [
    353242.20562672825,
    109504.41077003289
   ]
  },
  "max_25m": {
   "gradient_pct": 22.98003821104021,
   "start_distance_m": 787.0,
   "end_distance_m": 812.0,
   "midpoint_distance_m": 799.5,
   "start_elevation_m": 124.9486707306221,
   "end_elevation_m": 130.69368028338215,
   "start_xy": [
    353263.069425562,
    109490.65440857792
   ],
   "end_xy": [
    353242.20562672825,
    109504.41077003289
   ]
  },
  "max_50m": {
   "gradient_pct": 21.512417123801953,
   "start_distance_m": 762.0,
   "end_distance_m": 812.0,
   "midpoint_distance_m": 787.0,
   "start_elevation_m": 119.93747172148117,
   "end_elevation_m": 130.69368028338215,
   "start_xy": [
    353284.38486079505,
    109477.59182364175
   ],
   "end_xy": [
    353242.20562672825,
    109504.41077003289
   ]
  },
  "max_100m": {
   "gradient_pct": 19.549047378092197,
   "start_distance_m": 722.0,
   "end_distance_m": 822.0,
   "midpoint_distance_m": 772.0,
   "start_elevation_m": 113.06182353479566,
   "end_elevation_m": 132.61087091288786,
   "start_xy": [
    353316.49338639923,
    109453.79525646963
   ],
   "end_xy": [
    353234.0894316122,
    109510.25263419077
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -5.345051430766148,
   "start_distance_m": 2.0,
   "end_distance_m": 7.0,
   "midpoint_distance_m": 4.5,
   "start_elevation_m": 60.36741254492671,
   "end_elevation_m": 60.1001599733884,
   "start_xy": [
    353628.3346956312,
    108890.82569551843
   ],
   "end_xy": [
    353623.9589347091,
    108893.24493431453
   ]
  },
  "min_10m": {
   "gradient_pct": -3.1905541653674163,
   "start_distance_m": 912.0,
   "end_distance_m": 922.0,
   "midpoint_distance_m": 917.0,
   "start_elevation_m": 135.8332285022526,
   "end_elevation_m": 135.51417308571587,
   "start_xy": [
    353171.8011923431,
    109563.58547598403
   ],
   "end_xy": [
    353170.70700469334,
    109573.52059108511
   ]
  },
  "min_20m": {
   "gradient_pct": -2.5624018603603815,
   "start_distance_m": 895.0,
   "end_distance_m": 915.0,
   "midpoint_distance_m": 905.0,
   "start_elevation_m": 136.2512826427756,
   "end_elevation_m": 135.73880227070353,
   "start_xy": [
    353172.7710084323,
    109546.81900609862
   ],
   "end_xy": [
    353171.55760193465,
    109566.5724629679
   ]
  },
  "min_25m": {
   "gradient_pct": -2.747276439578968,
   "start_distance_m": 896.0,
   "end_distance_m": 921.0,
   "midpoint_distance_m": 908.5,
   "start_elevation_m": 136.23228921951733,
   "end_elevation_m": 135.54547010962258,
   "start_xy": [
    353172.2861191029,
    109547.59282623368
   ],
   "end_xy": [
    353170.82851858495,
    109572.52800135408
   ]
  },
  "min_50m": {
   "gradient_pct": -1.149355043399396,
   "start_distance_m": 604.0,
   "end_distance_m": 654.0,
   "midpoint_distance_m": 629.0,
   "start_elevation_m": 105.97950862077093,
   "end_elevation_m": 105.40483109907123,
   "start_xy": [
    353317.8476882585,
    109373.44870937939
   ],
   "end_xy": [
    353356.4899183149,
    109404.7924766057
   ]
  },
  "min_100m": {
   "gradient_pct": 2.903302172828006,
   "start_distance_m": 822.0,
   "end_distance_m": 922.0,
   "midpoint_distance_m": 872.0,
   "start_elevation_m": 132.61087091288786,
   "end_elevation_m": 135.51417308571587,
   "start_xy": [
    353234.0894316122,
    109510.25263419077
   ],
   "end_xy": [
    353170.70700469334,
    109573.52059108511
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 27.712670141762175,
   "start_distance_m": 763.0,
   "end_distance_m": 765.0,
   "midpoint_distance_m": 764.0,
   "start_elevation_m": 120.16674191358558,
   "end_elevation_m": 120.72099531642083,
   "start_xy": [
    353283.53105349897,
    109478.1124128283
   ],
   "end_xy": [
    353281.8234389068,
    109479.15359120138
   ]
  },
  "max_3m": {
   "gradient_pct": 26.117453164655064,
   "start_distance_m": 762.0,
   "end_distance_m": 765.0,
   "midpoint_distance_m": 763.5,
   "start_elevation_m": 119.93747172148117,
   "end_elevation_m": 120.72099531642083,
   "start_xy": [
    353284.38486079505,
    109477.59182364175
   ],
   "end_xy": [
    353281.8234389068,
    109479.15359120138
   ]
  }
 },
 "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": 0.025,
   "obstruction_max_height_m": 6.26,
   "flagged_windows_m": [
    2,
    3
   ]
  },
  "review": [],
  "extent": []
 },
 "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:27700",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/england/bulk_dtm_1m/ST5005.tif"
  ],
  "calculated_at": "2026-09-05T01:50:02+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "/mnt/HC_Volume_106792346/hunt-gb/regions/region-08.osm.pbf",
  "osm_snapshot": "",
  "run_id": "hunt-england-260905",
  "elevation_provider": "Environment Agency",
  "elevation_dataset": "EA LIDAR Composite DTM 1m (2022)",
  "elevation_licence": "Open Government Licence v3 \u2014 \u00a9 Environment Agency",
  "elevation_coverage_id": "13787b9a-26a4-4775-8523-806d13af58fc__Lidar_Composite_Elevation_DTM_1m",
  "elevation_tile_ids": [
   "ST5005.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Halstock",
  "county": "Dorset"
 }
}