{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (50.4790, -3.7407)",
 "slug": "discovered-lane-50-4790-3-7407",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 43.01525671725983,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 536.0,
   "end_distance_m": 538.0,
   "start_elevation_m": 97.01242114960661,
   "end_elevation_m": 97.8727262839518,
   "min_gradient_pct": -50.70306093519363,
   "suppressed_max_gradient_pct": 73.81835273656101,
   "suppressed_location_m": [
    122.0,
    124.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 32.11049994335132,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 106.0,
   "end_distance_m": 109.0,
   "start_elevation_m": 58.78884942665522,
   "end_elevation_m": 59.75216442495576,
   "min_gradient_pct": -32.643980254896356,
   "suppressed_max_gradient_pct": 69.12498235068512,
   "suppressed_location_m": [
    121.0,
    124.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.42086542097701,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_unresolved"
   ],
   "start_distance_m": 442.0,
   "end_distance_m": 447.0,
   "start_elevation_m": 90.59490695945277,
   "end_elevation_m": 91.91595023050162,
   "min_gradient_pct": -17.006477016885952,
   "suppressed_max_gradient_pct": 50.79670602743249,
   "suppressed_location_m": [
    121.0,
    126.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.7484119714087,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 442.0,
   "end_distance_m": 452.0,
   "start_elevation_m": 90.59490695945277,
   "end_elevation_m": 92.66974815659364,
   "min_gradient_pct": -10.510215883583669,
   "suppressed_max_gradient_pct": 32.4972861539937,
   "suppressed_location_m": [
    118.0,
    128.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 18.930906762345856,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 2.0,
   "end_distance_m": 22.0,
   "start_elevation_m": 42.476104840440286,
   "end_elevation_m": 46.26228619290946,
   "min_gradient_pct": -5.502932234098807,
   "suppressed_max_gradient_pct": 23.280699082840464,
   "suppressed_location_m": [
    77.0,
    97.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 18.154415051196395,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 2.0,
   "end_distance_m": 27.0,
   "start_elevation_m": 42.476104840440286,
   "end_elevation_m": 47.014708603239384,
   "min_gradient_pct": -2.471542644466581,
   "suppressed_max_gradient_pct": 23.311106920948024,
   "suppressed_location_m": [
    76.0,
    101.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 12.247201536032833,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 410.0,
   "end_distance_m": 460.0,
   "start_elevation_m": 87.3720545976402,
   "end_elevation_m": 93.49565536565662,
   "min_gradient_pct": -0.13631033891118705,
   "suppressed_max_gradient_pct": 19.42627792934553,
   "suppressed_location_m": [
    59.0,
    109.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 11.59524970979119,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 353.0,
   "end_distance_m": 453.0,
   "start_elevation_m": 81.3391769193557,
   "end_elevation_m": 92.93442662914688,
   "min_gradient_pct": 2.818707406119131,
   "suppressed_max_gradient_pct": 15.850060426489385,
   "suppressed_location_m": [
    9.0,
    109.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.361,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 76.0,
  "shape_class": "sustained"
 },
 "length_m": 655.6524719638068,
 "start_elevation_m": 42.151819624648766,
 "end_elevation_m": 101.73937878425568,
 "endpoint_gain_m": 59.58755915960691,
 "overall_gradient_pct": 9.088284069322667,
 "accumulated_ascent_m": 73.48220325361638,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.42086542097701,
   "start_distance_m": 442.0,
   "end_distance_m": 447.0,
   "midpoint_distance_m": 444.5,
   "start_elevation_m": 90.59490695945277,
   "end_elevation_m": 91.91595023050162,
   "start_xy": [
    276170.3720620972,
    65884.81278251478
   ],
   "end_xy": [
    276165.3770825765,
    65884.5887834168
   ]
  },
  "max_10m": {
   "gradient_pct": 20.7484119714087,
   "start_distance_m": 442.0,
   "end_distance_m": 452.0,
   "midpoint_distance_m": 447.0,
   "start_elevation_m": 90.59490695945277,
   "end_elevation_m": 92.66974815659364,
   "start_xy": [
    276170.3720620972,
    65884.81278251478
   ],
   "end_xy": [
    276160.3820588184,
    65884.36577742425
   ]
  },
  "max_20m": {
   "gradient_pct": 18.930906762345856,
   "start_distance_m": 2.0,
   "end_distance_m": 22.0,
   "midpoint_distance_m": 12.0,
   "start_elevation_m": 42.476104840440286,
   "end_elevation_m": 46.26228619290946,
   "start_xy": [
    276600.9678001981,
    65797.01603991965
   ],
   "end_xy": [
    276581.35611056496,
    65800.93797790955
   ]
  },
  "max_25m": {
   "gradient_pct": 18.154415051196395,
   "start_distance_m": 2.0,
   "end_distance_m": 27.0,
   "midpoint_distance_m": 14.5,
   "start_elevation_m": 42.476104840440286,
   "end_elevation_m": 47.014708603239384,
   "start_xy": [
    276600.9678001981,
    65797.01603991965
   ],
   "end_xy": [
    276576.45328445564,
    65801.91894316686
   ]
  },
  "max_50m": {
   "gradient_pct": 12.247201536032833,
   "start_distance_m": 410.0,
   "end_distance_m": 460.0,
   "midpoint_distance_m": 435.0,
   "start_elevation_m": 87.3720545976402,
   "end_elevation_m": 93.49565536565662,
   "start_xy": [
    276202.10171789257,
    65880.88444048465
   ],
   "end_xy": [
    276152.3901180398,
    65884.00678497873
   ]
  },
  "max_100m": {
   "gradient_pct": 11.59524970979119,
   "start_distance_m": 353.0,
   "end_distance_m": 453.0,
   "midpoint_distance_m": 403.0,
   "start_elevation_m": 81.3391769193557,
   "end_elevation_m": 92.93442662914688,
   "start_xy": [
    276257.65867972374,
    65868.37757349774
   ],
   "end_xy": [
    276159.3830718051,
    65884.32077800923
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -17.006477016885952,
   "start_distance_m": 109.0,
   "end_distance_m": 114.0,
   "midpoint_distance_m": 111.5,
   "start_elevation_m": 59.75216442495576,
   "end_elevation_m": 58.90184057411146,
   "start_xy": [
    276495.76682124136,
    65816.4590258207
   ],
   "end_xy": [
    276490.8177767106,
    65817.17103202737
   ]
  },
  "min_10m": {
   "gradient_pct": -10.510215883583669,
   "start_distance_m": 109.0,
   "end_distance_m": 119.0,
   "midpoint_distance_m": 114.0,
   "start_elevation_m": 59.75216442495576,
   "end_elevation_m": 58.70114283659739,
   "start_xy": [
    276495.76682124136,
    65816.4590258207
   ],
   "end_xy": [
    276485.8685911777,
    65817.88205863917
   ]
  },
  "min_20m": {
   "gradient_pct": -5.502932234098807,
   "start_distance_m": 634.0,
   "end_distance_m": 654.0,
   "midpoint_distance_m": 644.0,
   "start_elevation_m": 102.8471294413492,
   "end_elevation_m": 101.74654299452943,
   "start_xy": [
    275978.50054101076,
    65877.90087960729
   ],
   "end_xy": [
    275958.94442861556,
    65881.3544593725
   ]
  },
  "min_25m": {
   "gradient_pct": -2.471542644466581,
   "start_distance_m": 626.0,
   "end_distance_m": 651.0,
   "midpoint_distance_m": 638.5,
   "start_elevation_m": 102.33574323312216,
   "end_elevation_m": 101.71785757200551,
   "start_xy": [
    275986.4976244208,
    65878.1168817411
   ],
   "end_xy": [
    275961.85170783964,
    65880.61437448034
   ]
  },
  "min_50m": {
   "gradient_pct": -0.13631033891118705,
   "start_distance_m": 603.0,
   "end_distance_m": 653.0,
   "midpoint_distance_m": 628.0,
   "start_elevation_m": 101.79874529360208,
   "end_elevation_m": 101.73059012414649,
   "start_xy": [
    276009.48921218823,
    65878.73887072908
   ],
   "end_xy": [
    275959.9134431509,
    65881.10745566743
   ]
  },
  "min_100m": {
   "gradient_pct": 2.818707406119131,
   "start_distance_m": 552.0,
   "end_distance_m": 652.0,
   "midpoint_distance_m": 602.0,
   "start_elevation_m": 98.90087958347033,
   "end_elevation_m": 101.71958698958946,
   "start_xy": [
    276060.46155167837,
    65880.40583970012
   ],
   "end_xy": [
    275960.8824576862,
    65880.86045196235
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 43.01525671725983,
   "start_distance_m": 536.0,
   "end_distance_m": 538.0,
   "midpoint_distance_m": 537.0,
   "start_elevation_m": 97.01242114960661,
   "end_elevation_m": 97.8727262839518,
   "start_xy": [
    276076.4514291202,
    65880.97483528362
   ],
   "end_xy": [
    276074.4526897018,
    65880.90384467393
   ]
  },
  "max_3m": {
   "gradient_pct": 32.11049994335132,
   "start_distance_m": 106.0,
   "end_distance_m": 109.0,
   "midpoint_distance_m": 107.5,
   "start_elevation_m": 58.78884942665522,
   "end_elevation_m": 59.75216442495576,
   "start_xy": [
    276498.7364292535,
    65816.03308186465
   ],
   "end_xy": [
    276495.76682124136,
    65816.4590258207
   ]
  }
 },
 "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": 0.011,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.102,
   "windows_resited": [
    2.0,
    3.0,
    5.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 4,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 76.0,
     "end_m": 101.0,
     "raw_pct": 23.31,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 77.0,
     "end_m": 97.0,
     "raw_pct": 23.28,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 76.0,
     "end_m": 86.0,
     "raw_pct": 31.69,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 77.0,
     "end_m": 82.0,
     "raw_pct": 42.45,
     "reason": "hump+short-step"
    },
    {
     "window_m": 5.0,
     "start_m": 130.0,
     "end_m": 135.0,
     "raw_pct": 32.41,
     "reason": "mask-edge+short-step"
    },
    {
     "window_m": 5.0,
     "start_m": 40.0,
     "end_m": 45.0,
     "raw_pct": 31.35,
     "reason": "short-step"
    },
    {
     "window_m": 5.0,
     "start_m": 174.0,
     "end_m": 179.0,
     "raw_pct": 28.63,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": [
    {
     "window_m": 5.0,
     "start_m": 442.0,
     "end_m": 447.0,
     "pct": 26.42,
     "reason": "short-step"
    }
   ]
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.19,
   "obstruction_max_height_m": 11.81,
   "flagged_windows_m": [
    2
   ]
  },
  "excluded_ranges_m": [
   [
    38.0,
    47.0
   ],
   [
    74.0,
    103.0
   ],
   [
    120.0,
    126.0
   ],
   [
    128.0,
    137.0
   ],
   [
    172.0,
    181.0
   ]
  ],
  "review": [
   "texture_unresolved"
  ],
  "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:27700",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/england/bulk_dtm_1m/SX7565.tif"
  ],
  "calculated_at": "2026-09-11T23:26:41+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-260911",
  "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": [
   "SX7565.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Woolston Green",
  "county": "Devon"
 }
}