{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (50.4063, -3.7530)",
 "slug": "discovered-lane-50-4063-3-7530",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 39.794294990803536,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 136.0,
   "end_distance_m": 138.0,
   "start_elevation_m": 90.03604237667724,
   "end_elevation_m": 90.83192827649331,
   "min_gradient_pct": -27.239246457270383,
   "suppressed_max_gradient_pct": 46.79050661833912,
   "suppressed_location_m": [
    170.0,
    172.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 32.125217804022554,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 136.0,
   "end_distance_m": 139.0,
   "start_elevation_m": 90.03604237667724,
   "end_elevation_m": 90.99979891079792,
   "min_gradient_pct": -26.04738268806936,
   "suppressed_max_gradient_pct": 45.58803319495439,
   "suppressed_location_m": [
    169.0,
    172.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.706847045492623,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 104.0,
   "end_distance_m": 109.0,
   "start_elevation_m": 84.96401191977992,
   "end_elevation_m": 86.14935427205455,
   "min_gradient_pct": -21.911134842754905,
   "suppressed_max_gradient_pct": 41.95976804830508,
   "suppressed_location_m": [
    167.0,
    172.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.715668267840726,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 99.0,
   "end_distance_m": 109.0,
   "start_elevation_m": 83.97778744527048,
   "end_elevation_m": 86.14935427205455,
   "min_gradient_pct": -16.767126758025483,
   "suppressed_max_gradient_pct": 37.00775888441399,
   "suppressed_location_m": [
    162.0,
    172.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 17.799480910695564,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 96.0,
   "end_distance_m": 116.0,
   "start_elevation_m": 83.50408234102761,
   "end_elevation_m": 87.06397852316672,
   "min_gradient_pct": -14.802085364556916,
   "suppressed_max_gradient_pct": 28.707884415794286,
   "suppressed_location_m": [
    153.0,
    173.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 18.266666214706788,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 84.0,
   "end_distance_m": 109.0,
   "start_elevation_m": 81.58268771837785,
   "end_elevation_m": 86.14935427205455,
   "min_gradient_pct": -13.185205811730896,
   "suppressed_max_gradient_pct": 26.339895052990528,
   "suppressed_location_m": [
    148.0,
    173.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 16.965644382970368,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 59.0,
   "end_distance_m": 109.0,
   "start_elevation_m": 77.66653208056937,
   "end_elevation_m": 86.14935427205455,
   "min_gradient_pct": -9.799330507290165,
   "suppressed_max_gradient_pct": 20.729027771616046,
   "suppressed_location_m": [
    123.0,
    173.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 11.458487056476258,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 738.0,
   "end_distance_m": 838.0,
   "start_elevation_m": 117.48967656595471,
   "end_elevation_m": 128.94816362243097,
   "min_gradient_pct": -7.968530054219713,
   "suppressed_max_gradient_pct": 18.812582206318467,
   "suppressed_location_m": [
    74.0,
    174.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.493,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 79.0,
  "shape_class": "stepped"
 },
 "length_m": 964.9045178709571,
 "start_elevation_m": 72.40162927627549,
 "end_elevation_m": 133.714955505249,
 "endpoint_gain_m": 61.31332622897352,
 "overall_gradient_pct": 6.354341294230871,
 "accumulated_ascent_m": 74.60537995780717,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.706847045492623,
   "start_distance_m": 104.0,
   "end_distance_m": 109.0,
   "midpoint_distance_m": 106.5,
   "start_elevation_m": 84.96401191977992,
   "end_elevation_m": 86.14935427205455,
   "start_xy": [
    275373.60866760043,
    57666.38676662274
   ],
   "end_xy": [
    275378.327849556,
    57664.73470211543
   ]
  },
  "max_10m": {
   "gradient_pct": 21.715668267840726,
   "start_distance_m": 99.0,
   "end_distance_m": 109.0,
   "midpoint_distance_m": 104.0,
   "start_elevation_m": 83.97778744527048,
   "end_elevation_m": 86.14935427205455,
   "start_xy": [
    275368.8894856587,
    57668.03883022524
   ],
   "end_xy": [
    275378.327849556,
    57664.73470211543
   ]
  },
  "max_20m": {
   "gradient_pct": 17.799480910695564,
   "start_distance_m": 96.0,
   "end_distance_m": 116.0,
   "midpoint_distance_m": 106.0,
   "start_elevation_m": 83.50408234102761,
   "end_elevation_m": 87.06397852316672,
   "start_xy": [
    275366.0582693503,
    57669.03090555619
   ],
   "end_xy": [
    275384.93437393685,
    57662.42086928055
   ]
  },
  "max_25m": {
   "gradient_pct": 18.266666214706788,
   "start_distance_m": 84.0,
   "end_distance_m": 109.0,
   "midpoint_distance_m": 96.5,
   "start_elevation_m": 81.58268771837785,
   "end_elevation_m": 86.14935427205455,
   "start_xy": [
    275354.7325632114,
    57672.99680251804
   ],
   "end_xy": [
    275378.327849556,
    57664.73470211543
   ]
  },
  "max_50m": {
   "gradient_pct": 16.965644382970368,
   "start_distance_m": 59.0,
   "end_distance_m": 109.0,
   "midpoint_distance_m": 84.0,
   "start_elevation_m": 77.66653208056937,
   "end_elevation_m": 86.14935427205455,
   "start_xy": [
    275331.09198270633,
    57681.127005819275
   ],
   "end_xy": [
    275378.327849556,
    57664.73470211543
   ]
  },
  "max_100m": {
   "gradient_pct": 11.458487056476258,
   "start_distance_m": 738.0,
   "end_distance_m": 838.0,
   "midpoint_distance_m": 788.0,
   "start_elevation_m": 117.48967656595471,
   "end_elevation_m": 128.94816362243097,
   "start_xy": [
    275789.11327065167,
    58062.7659607533
   ],
   "end_xy": [
    275847.9853263183,
    58142.663203601725
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -21.911134842754905,
   "start_distance_m": 435.0,
   "end_distance_m": 440.0,
   "midpoint_distance_m": 437.5,
   "start_elevation_m": 102.95342567375832,
   "end_elevation_m": 101.85786893162057,
   "start_xy": [
    275648.2058970793,
    57795.4562308763
   ],
   "end_xy": [
    275650.86462577904,
    57799.69075076892
   ]
  },
  "min_10m": {
   "gradient_pct": -16.767126758025483,
   "start_distance_m": 430.0,
   "end_distance_m": 440.0,
   "midpoint_distance_m": 435.0,
   "start_elevation_m": 103.53458160742312,
   "end_elevation_m": 101.85786893162057,
   "start_xy": [
    275645.0469274024,
    57791.59454410008
   ],
   "end_xy": [
    275650.86462577904,
    57799.69075076892
   ]
  },
  "min_20m": {
   "gradient_pct": -14.802085364556916,
   "start_distance_m": 421.0,
   "end_distance_m": 441.0,
   "midpoint_distance_m": 431.0,
   "start_elevation_m": 104.69178479853682,
   "end_elevation_m": 101.73136772562543,
   "start_xy": [
    275639.0525977148,
    57784.88127311601
   ],
   "end_xy": [
    275651.3969392801,
    57800.537298064366
   ]
  },
  "min_25m": {
   "gradient_pct": -13.185205811730896,
   "start_distance_m": 417.0,
   "end_distance_m": 442.0,
   "midpoint_distance_m": 429.5,
   "start_elevation_m": 105.0063950680244,
   "end_elevation_m": 101.71009361509168,
   "start_xy": [
    275636.38764067047,
    57781.898321231456
   ],
   "end_xy": [
    275651.92882413947,
    57801.38411474839
   ]
  },
  "min_50m": {
   "gradient_pct": -9.799330507290165,
   "start_distance_m": 392.0,
   "end_distance_m": 442.0,
   "midpoint_distance_m": 417.0,
   "start_elevation_m": 106.60975886873676,
   "end_elevation_m": 101.71009361509168,
   "start_xy": [
    275616.5990576652,
    57766.805475974266
   ],
   "end_xy": [
    275651.92882413947,
    57801.38411474839
   ]
  },
  "min_100m": {
   "gradient_pct": -7.968530054219713,
   "start_distance_m": 343.0,
   "end_distance_m": 443.0,
   "midpoint_distance_m": 393.0,
   "start_elevation_m": 109.68232510745824,
   "end_elevation_m": 101.71379505323853,
   "start_xy": [
    275568.6115252148,
    57765.4622872382
   ],
   "end_xy": [
    275652.4607089989,
    57802.23093143242
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 39.794294990803536,
   "start_distance_m": 136.0,
   "end_distance_m": 138.0,
   "midpoint_distance_m": 137.0,
   "start_elevation_m": 90.03604237667724,
   "end_elevation_m": 90.83192827649331,
   "start_xy": [
    275403.9930005432,
    57656.44299987799
   ],
   "end_xy": [
    275405.9444287772,
    57656.004904228044
   ]
  },
  "max_3m": {
   "gradient_pct": 32.125217804022554,
   "start_distance_m": 136.0,
   "end_distance_m": 139.0,
   "midpoint_distance_m": 137.5,
   "start_elevation_m": 90.03604237667724,
   "end_elevation_m": 90.99979891079792,
   "start_xy": [
    275403.9930005432,
    57656.44299987799
   ],
   "end_xy": [
    275406.92037989787,
    57655.786914756514
   ]
  }
 },
 "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": {
  "structure_suppression": {
   "masked_fraction": 0.034,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.06,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 2,
   "windows_masked": [
    {
     "window_m": 10.0,
     "start_m": 162.0,
     "end_m": 172.0,
     "raw_pct": 37.01,
     "reason": "short-step"
    },
    {
     "window_m": 5.0,
     "start_m": 120.0,
     "end_m": 125.0,
     "raw_pct": 31.16,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.089,
   "obstruction_max_height_m": 10.2,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    0.0,
    32.0
   ],
   [
    118.0,
    127.0
   ],
   [
    160.0,
    174.0
   ]
  ],
  "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/SX7555.tif"
  ],
  "calculated_at": "2026-09-12T01:38:13+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/texture-uk-england/batch-england-rchunk01.pbf",
  "osm_snapshot": "",
  "run_id": "texture-uk-england-260912",
  "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": [
   "SX7555.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Belsford",
  "county": "Devon"
 }
}