{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (51.8920, -4.3620)",
 "slug": "discovered-lane-51-8920-4-3620",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 38.47033298417841,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 540.0,
   "end_distance_m": 542.0,
   "start_elevation_m": 200.01798887461376,
   "end_elevation_m": 200.78739553429733,
   "min_gradient_pct": -24.681666525196988,
   "suppressed_max_gradient_pct": 78.52238574540564,
   "suppressed_location_m": [
    443.0,
    445.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 32.62674958716332,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 92.0,
   "end_distance_m": 95.0,
   "start_elevation_m": 150.89337822169196,
   "end_elevation_m": 151.87218070930686,
   "min_gradient_pct": -17.794147362154906,
   "suppressed_max_gradient_pct": 60.51348176399264,
   "suppressed_location_m": [
    442.0,
    445.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 31.401670919446474,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 426.0,
   "end_distance_m": 431.0,
   "start_elevation_m": 182.86188517043337,
   "end_elevation_m": 184.4319687164057,
   "min_gradient_pct": -12.733854043824522,
   "suppressed_max_gradient_pct": 42.984259536789295,
   "suppressed_location_m": [
    440.0,
    445.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 26.894564422624683,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 421.0,
   "end_distance_m": 431.0,
   "start_elevation_m": 181.74251227414322,
   "end_elevation_m": 184.4319687164057,
   "min_gradient_pct": -9.119404238411448,
   "suppressed_max_gradient_pct": 30.56918669588896,
   "suppressed_location_m": [
    438.0,
    448.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.919916998522808,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 411.0,
   "end_distance_m": 431.0,
   "start_elevation_m": 180.04798531670113,
   "end_elevation_m": 184.4319687164057,
   "min_gradient_pct": -3.9246403100078453,
   "suppressed_max_gradient_pct": 23.604568688554224,
   "suppressed_location_m": [
    425.0,
    445.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.730611087714465,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 406.0,
   "end_distance_m": 431.0,
   "start_elevation_m": 179.24931594447708,
   "end_elevation_m": 184.4319687164057,
   "min_gradient_pct": -2.2182812699792294,
   "suppressed_max_gradient_pct": 22.969444056174666,
   "suppressed_location_m": [
    420.0,
    445.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.166264213595298,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 381.0,
   "end_distance_m": 431.0,
   "start_elevation_m": 175.34883660960804,
   "end_elevation_m": 184.4319687164057,
   "min_gradient_pct": 2.294983962443496,
   "suppressed_max_gradient_pct": 19.79575947148345,
   "suppressed_location_m": [
    398.0,
    448.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 14.269805158112717,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 341.0,
   "end_distance_m": 441.0,
   "start_elevation_m": 171.05668127655272,
   "end_elevation_m": 185.32648643466544,
   "min_gradient_pct": 4.809539218718868,
   "suppressed_max_gradient_pct": 17.028550286863236,
   "suppressed_location_m": [
    400.0,
    500.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.38,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 63.0,
  "shape_class": "sustained"
 },
 "length_m": 564.9999999999927,
 "start_elevation_m": 142.93469913299535,
 "end_elevation_m": 201.7015811796248,
 "endpoint_gain_m": 58.76688204662946,
 "overall_gradient_pct": 10.40121806135048,
 "accumulated_ascent_m": 63.611157233744365,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 31.401670919446474,
   "start_distance_m": 426.0,
   "end_distance_m": 431.0,
   "midpoint_distance_m": 428.5,
   "start_elevation_m": 182.86188517043337,
   "end_elevation_m": 184.4319687164057,
   "start_xy": [
    237399.38720107678,
    224463.9200340023
   ],
   "end_xy": [
    237398.5014400077,
    224468.84095132822
   ]
  },
  "max_10m": {
   "gradient_pct": 26.894564422624683,
   "start_distance_m": 421.0,
   "end_distance_m": 431.0,
   "midpoint_distance_m": 426.0,
   "start_elevation_m": 181.74251227414322,
   "end_elevation_m": 184.4319687164057,
   "start_xy": [
    237400.27296214586,
    224458.9991166764
   ],
   "end_xy": [
    237398.5014400077,
    224468.84095132822
   ]
  },
  "max_20m": {
   "gradient_pct": 21.919916998522808,
   "start_distance_m": 411.0,
   "end_distance_m": 431.0,
   "midpoint_distance_m": 421.0,
   "start_elevation_m": 180.04798531670113,
   "end_elevation_m": 184.4319687164057,
   "start_xy": [
    237402.044484284,
    224449.15728202456
   ],
   "end_xy": [
    237398.5014400077,
    224468.84095132822
   ]
  },
  "max_25m": {
   "gradient_pct": 20.730611087714465,
   "start_distance_m": 406.0,
   "end_distance_m": 431.0,
   "midpoint_distance_m": 418.5,
   "start_elevation_m": 179.24931594447708,
   "end_elevation_m": 184.4319687164057,
   "start_xy": [
    237402.93024535305,
    224444.23636469865
   ],
   "end_xy": [
    237398.5014400077,
    224468.84095132822
   ]
  },
  "max_50m": {
   "gradient_pct": 18.166264213595298,
   "start_distance_m": 381.0,
   "end_distance_m": 431.0,
   "midpoint_distance_m": 406.0,
   "start_elevation_m": 175.34883660960804,
   "end_elevation_m": 184.4319687164057,
   "start_xy": [
    237410.6106580137,
    224420.74228702253
   ],
   "end_xy": [
    237398.5014400077,
    224468.84095132822
   ]
  },
  "max_100m": {
   "gradient_pct": 14.269805158112717,
   "start_distance_m": 341.0,
   "end_distance_m": 441.0,
   "midpoint_distance_m": 391.0,
   "start_elevation_m": 171.05668127655272,
   "end_elevation_m": 185.32648643466544,
   "start_xy": [
    237429.0860693312,
    224385.26470006048
   ],
   "end_xy": [
    237396.72991786955,
    224478.68278598005
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -12.733854043824522,
   "start_distance_m": 266.0,
   "end_distance_m": 271.0,
   "midpoint_distance_m": 268.5,
   "start_elevation_m": 164.7595023553901,
   "end_elevation_m": 164.12280965319889,
   "start_xy": [
    237464.2111057351,
    224319.0002336569
   ],
   "end_xy": [
    237461.8422695461,
    224323.40348417326
   ]
  },
  "min_10m": {
   "gradient_pct": -9.119404238411448,
   "start_distance_m": 266.0,
   "end_distance_m": 276.0,
   "midpoint_distance_m": 271.0,
   "start_elevation_m": 164.7595023553901,
   "end_elevation_m": 163.84756193154897,
   "start_xy": [
    237464.2111057351,
    224319.0002336569
   ],
   "end_xy": [
    237459.4734333571,
    224327.80673468963
   ]
  },
  "min_20m": {
   "gradient_pct": -3.9246403100078453,
   "start_distance_m": 260.0,
   "end_distance_m": 280.0,
   "midpoint_distance_m": 270.0,
   "start_elevation_m": 164.83290335444468,
   "end_elevation_m": 164.0479752924431,
   "start_xy": [
    237467.05370916188,
    224313.7163330373
   ],
   "end_xy": [
    237457.57836440593,
    224331.3293351027
   ]
  },
  "min_25m": {
   "gradient_pct": -2.2182812699792294,
   "start_distance_m": 260.0,
   "end_distance_m": 285.0,
   "midpoint_distance_m": 272.5,
   "start_elevation_m": 164.83290335444468,
   "end_elevation_m": 164.27833303694987,
   "start_xy": [
    237467.05370916188,
    224313.7163330373
   ],
   "end_xy": [
    237455.20952821695,
    224335.73258561906
   ]
  },
  "min_50m": {
   "gradient_pct": 2.294983962443496,
   "start_distance_m": 260.0,
   "end_distance_m": 310.0,
   "midpoint_distance_m": 285.0,
   "start_elevation_m": 164.83290335444468,
   "end_elevation_m": 165.98039533566643,
   "start_xy": [
    237467.05370916188,
    224313.7163330373
   ],
   "end_xy": [
    237443.4045131023,
    224357.7695701649
   ]
  },
  "min_100m": {
   "gradient_pct": 4.809539218718868,
   "start_distance_m": 188.0,
   "end_distance_m": 288.0,
   "midpoint_distance_m": 238.0,
   "start_elevation_m": 159.64159386688672,
   "end_elevation_m": 164.4511330856056,
   "start_xy": [
    237501.16495028327,
    224250.30952560183
   ],
   "end_xy": [
    237453.78822650356,
    224338.37453592886
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 38.47033298417841,
   "start_distance_m": 540.0,
   "end_distance_m": 542.0,
   "midpoint_distance_m": 541.0,
   "start_elevation_m": 200.01798887461376,
   "end_elevation_m": 200.78739553429733,
   "start_xy": [
    237379.19184870186,
    224576.11694903322
   ],
   "end_xy": [
    237378.83754427423,
    224578.0853159636
   ]
  },
  "max_3m": {
   "gradient_pct": 32.62674958716332,
   "start_distance_m": 92.0,
   "end_distance_m": 95.0,
   "midpoint_distance_m": 93.5,
   "start_elevation_m": 150.89337822169196,
   "end_elevation_m": 151.87218070930686,
   "start_xy": [
    237546.64553529373,
    224165.76654016465
   ],
   "end_xy": [
    237545.2242777375,
    224168.4085142294
   ]
  }
 },
 "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": 0.021,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.074,
   "obstruction_max_height_m": 12.98,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    330.0,
    335.0
   ],
   [
    442.0,
    447.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_end"
  ]
 },
 "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_24_237224_20220120dtm.tif"
  ],
  "calculated_at": "2026-09-05T06:02:47+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/wales-2026-08-11.osm.pbf",
  "osm_snapshot": "2026-08-10T20:21:40Z",
  "run_id": "summit-260905-summit-wales-wales-2026-08-11",
  "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_24_237224_20220120dtm.tif"
  ],
  "elevation_capture_dates": [
   "20-01-2022"
  ],
  "route_summit_trim_m": 185.9,
  "route_summit_trim_loss_m": 4.2,
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Newchurch",
  "county": "Sir Gaerfyrddin - Carmarthenshire"
 }
}