{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (52.3878, -3.9709)",
 "slug": "discovered-lane-52-3878-3-9709",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 26.785001261420405,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 61.0,
   "end_distance_m": 63.0,
   "start_elevation_m": 107.79467554951889,
   "end_elevation_m": 108.3303755747473,
   "min_gradient_pct": -45.95765959329938,
   "suppressed_max_gradient_pct": 79.59871343086107,
   "suppressed_location_m": [
    0.0,
    2.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 25.760756755990617,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 61.0,
   "end_distance_m": 64.0,
   "start_elevation_m": 107.79467554951889,
   "end_elevation_m": 108.5674982521986,
   "min_gradient_pct": -32.23598256950121,
   "suppressed_max_gradient_pct": 64.12189657944747,
   "suppressed_location_m": [
    0.0,
    3.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.012040961182777,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 185.0,
   "end_distance_m": 190.0,
   "start_elevation_m": 127.52990779675399,
   "end_elevation_m": 128.73050984481313,
   "min_gradient_pct": -17.017028318731207,
   "suppressed_max_gradient_pct": 40.92352275393864,
   "suppressed_location_m": [
    0.0,
    5.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.928054614063882,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 185.0,
   "end_distance_m": 195.0,
   "start_elevation_m": 127.52990779675399,
   "end_elevation_m": 129.82271325816038,
   "min_gradient_pct": -8.772557132871555,
   "suppressed_max_gradient_pct": 25.97525093902135,
   "suppressed_location_m": [
    150.0,
    160.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.814748779732497,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 246.0,
   "end_distance_m": 266.0,
   "start_elevation_m": 139.599434891777,
   "end_elevation_m": 143.7623846477235,
   "min_gradient_pct": -2.2656683482080098,
   "suppressed_max_gradient_pct": 25.29017549261404,
   "suppressed_location_m": [
    149.0,
    169.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.61433504392653,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 235.0,
   "end_distance_m": 260.0,
   "start_elevation_m": 137.41665153087456,
   "end_elevation_m": 142.5702352918562,
   "min_gradient_pct": -0.32808256662838176,
   "suppressed_max_gradient_pct": 24.489000569966265,
   "suppressed_location_m": [
    144.0,
    169.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.418936438359594,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 244.0,
   "end_distance_m": 294.0,
   "start_elevation_m": 139.226600386498,
   "end_elevation_m": 149.4360686056778,
   "min_gradient_pct": 2.266545263385467,
   "suppressed_max_gradient_pct": 21.372433911184544,
   "suppressed_location_m": [
    144.0,
    194.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.072808232271726,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 185.0,
   "end_distance_m": 285.0,
   "start_elevation_m": 127.52990779675399,
   "end_elevation_m": 147.60271602902571,
   "min_gradient_pct": 2.94761921688297,
   "suppressed_max_gradient_pct": 20.36098545861053,
   "suppressed_location_m": [
    140.0,
    240.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.396,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 324.0,
  "shape_class": "sustained"
 },
 "length_m": 631.272317017289,
 "start_elevation_m": 100.80315100860248,
 "end_elevation_m": 179.50860274841378,
 "endpoint_gain_m": 78.7054517398113,
 "overall_gradient_pct": 12.467749593660029,
 "accumulated_ascent_m": 80.96973631021697,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.012040961182777,
   "start_distance_m": 185.0,
   "end_distance_m": 190.0,
   "midpoint_distance_m": 187.5,
   "start_elevation_m": 127.52990779675399,
   "end_elevation_m": 128.73050984481313,
   "start_xy": [
    265839.4634604045,
    278506.55144542974
   ],
   "end_xy": [
    265834.98985581147,
    278508.7845720943
   ]
  },
  "max_10m": {
   "gradient_pct": 22.928054614063882,
   "start_distance_m": 185.0,
   "end_distance_m": 195.0,
   "midpoint_distance_m": 190.0,
   "start_elevation_m": 127.52990779675399,
   "end_elevation_m": 129.82271325816038,
   "start_xy": [
    265839.4634604045,
    278506.55144542974
   ],
   "end_xy": [
    265830.51667765906,
    278511.01855316915
   ]
  },
  "max_20m": {
   "gradient_pct": 20.814748779732497,
   "start_distance_m": 246.0,
   "end_distance_m": 266.0,
   "midpoint_distance_m": 256.0,
   "start_elevation_m": 139.599434891777,
   "end_elevation_m": 143.7623846477235,
   "start_xy": [
    265785.52881348075,
    278535.0046390276
   ],
   "end_xy": [
    265768.1265454777,
    278544.86166828877
   ]
  },
  "max_25m": {
   "gradient_pct": 20.61433504392653,
   "start_distance_m": 235.0,
   "end_distance_m": 260.0,
   "midpoint_distance_m": 247.5,
   "start_elevation_m": 137.41665153087456,
   "end_elevation_m": 142.5702352918562,
   "start_xy": [
    265795.10006510024,
    278529.5832804261
   ],
   "end_xy": [
    265773.3471597625,
    278541.90444280126
   ]
  },
  "max_50m": {
   "gradient_pct": 20.418936438359594,
   "start_distance_m": 244.0,
   "end_distance_m": 294.0,
   "midpoint_distance_m": 269.0,
   "start_elevation_m": 139.226600386498,
   "end_elevation_m": 149.4360686056778,
   "start_xy": [
    265787.26885785244,
    278534.01861388364
   ],
   "end_xy": [
    265743.76319808856,
    278558.6612052189
   ]
  },
  "max_100m": {
   "gradient_pct": 20.072808232271726,
   "start_distance_m": 185.0,
   "end_distance_m": 285.0,
   "midpoint_distance_m": 235.0,
   "start_elevation_m": 127.52990779675399,
   "end_elevation_m": 147.60271602902571,
   "start_xy": [
    265839.4634604045,
    278506.55144542974
   ],
   "end_xy": [
    265751.59416183934,
    278554.2254416244
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -17.017028318731207,
   "start_distance_m": 83.0,
   "end_distance_m": 88.0,
   "midpoint_distance_m": 85.5,
   "start_elevation_m": 110.64525292704508,
   "end_elevation_m": 109.79440151110852,
   "start_xy": [
    265929.2479509617,
    278459.0448923264
   ],
   "end_xy": [
    265925.94677216216,
    278462.8001834943
   ]
  },
  "min_10m": {
   "gradient_pct": -8.772557132871555,
   "start_distance_m": 617.0,
   "end_distance_m": 627.0,
   "midpoint_distance_m": 622.0,
   "start_elevation_m": 180.31027620081963,
   "end_elevation_m": 179.43302048753247,
   "start_xy": [
    265519.4786044809,
    278368.8187843549
   ],
   "end_xy": [
    265513.9353109716,
    278360.49581088166
   ]
  },
  "min_20m": {
   "gradient_pct": -2.2656683482080098,
   "start_distance_m": 611.0,
   "end_distance_m": 631.0,
   "midpoint_distance_m": 621.0,
   "start_elevation_m": 179.95036322744704,
   "end_elevation_m": 179.49722955780544,
   "start_xy": [
    265522.80449724884,
    278373.8126231197
   ],
   "end_xy": [
    265511.7177310773,
    278357.16679660545
   ]
  },
  "min_25m": {
   "gradient_pct": -0.32808256662838176,
   "start_distance_m": 605.0,
   "end_distance_m": 630.0,
   "midpoint_distance_m": 617.5,
   "start_elevation_m": 179.53886165611263,
   "end_elevation_m": 179.45684101445553,
   "start_xy": [
    265526.13049263525,
    278378.80639436486
   ],
   "end_xy": [
    265512.2722207753,
    278357.9989868199
   ]
  },
  "min_50m": {
   "gradient_pct": 2.266545263385467,
   "start_distance_m": 534.0,
   "end_distance_m": 584.0,
   "midpoint_distance_m": 559.0,
   "start_elevation_m": 176.78514271003127,
   "end_elevation_m": 177.918415341724,
   "start_xy": [
    265571.75303466973,
    278433.1112315164
   ],
   "end_xy": [
    265538.8708868742,
    278395.44475145073
   ]
  },
  "min_100m": {
   "gradient_pct": 2.94761921688297,
   "start_distance_m": 531.0,
   "end_distance_m": 631.0,
   "midpoint_distance_m": 581.0,
   "start_elevation_m": 176.54961034092247,
   "end_elevation_m": 179.49722955780544,
   "start_xy": [
    265573.72599850973,
    278435.3711900728
   ],
   "end_xy": [
    265511.7177310773,
    278357.16679660545
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 26.785001261420405,
   "start_distance_m": 61.0,
   "end_distance_m": 63.0,
   "midpoint_distance_m": 62.0,
   "start_elevation_m": 107.79467554951889,
   "end_elevation_m": 108.3303755747473,
   "start_xy": [
    265947.67550849647,
    278450.0063314933
   ],
   "end_xy": [
    265945.68503389903,
    278450.2012931436
   ]
  },
  "max_3m": {
   "gradient_pct": 25.760756755990617,
   "start_distance_m": 61.0,
   "end_distance_m": 64.0,
   "midpoint_distance_m": 62.5,
   "start_elevation_m": 107.79467554951889,
   "end_elevation_m": 108.5674982521986,
   "start_xy": [
    265947.67550849647,
    278450.0063314933
   ],
   "end_xy": [
    265944.68984927516,
    278450.2993113277
   ]
  }
 },
 "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": 0.017,
   "windows_resited": [
    2.0,
    3.0,
    5.0
   ],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.065,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 144.0,
     "end_m": 169.0,
     "raw_pct": 24.49,
     "reason": "hump"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.325,
   "obstruction_max_height_m": 22.31,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    0.0,
    4.0
   ],
   [
    83.0,
    88.0
   ],
   [
    142.0,
    171.0
   ]
  ],
  "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:27700",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/wales/dtm_1m/wg_del_23_265278_20220117dtm.tif"
  ],
  "calculated_at": "2026-09-12T00:09:14+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/texture-uk-wales/batch-england-rchunk03.pbf",
  "osm_snapshot": "",
  "run_id": "texture-uk-wales-260911",
  "elevation_provider": "Welsh Government",
  "elevation_dataset": "Welsh Government LiDAR 1m DTM (2020-2023)",
  "elevation_licence": "Open Government Licence v3 \u2014 \u00a9 Crown copyright Welsh Government",
  "elevation_catalogue_layer": "geonode:welsh_government_lidar_tile_catalogue_2020_2023",
  "elevation_tile_ids": [
   "wg_del_23_265278_20220117dtm.tif"
  ],
  "elevation_capture_dates": [
   "17-01-2022"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Cwm Seiri",
  "county": "Sir Ceredigion - Ceredigion"
 }
}