{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (51.8991, -4.8266)",
 "slug": "discovered-lane-51-8991-4-8266",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 26.16090291836599,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 195.0,
   "end_distance_m": 197.0,
   "start_elevation_m": 128.2876595789111,
   "end_elevation_m": 128.81087763727842,
   "min_gradient_pct": -44.09534223394189,
   "suppressed_max_gradient_pct": 70.59854105157513,
   "suppressed_location_m": [
    10.0,
    12.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 26.620346738270467,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 195.0,
   "end_distance_m": 198.0,
   "start_elevation_m": 128.2876595789111,
   "end_elevation_m": 129.08626998105922,
   "min_gradient_pct": -39.86753392446758,
   "suppressed_max_gradient_pct": 65.50655038378513,
   "suppressed_location_m": [
    10.0,
    13.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.19603469594199,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 191.0,
   "end_distance_m": 196.0,
   "start_elevation_m": 127.5693387096745,
   "end_elevation_m": 128.7291404444716,
   "min_gradient_pct": -24.767114237878616,
   "suppressed_max_gradient_pct": 46.77118852258616,
   "suppressed_location_m": [
    9.0,
    14.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.56812165128008,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 375.0,
   "end_distance_m": 385.0,
   "start_elevation_m": 154.3386974109394,
   "end_elevation_m": 156.3955095760674,
   "min_gradient_pct": -9.283378785204945,
   "suppressed_max_gradient_pct": 25.210803053360138,
   "suppressed_location_m": [
    8.0,
    18.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.231835605466557,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 370.0,
   "end_distance_m": 390.0,
   "start_elevation_m": 153.37019484394983,
   "end_elevation_m": 157.41656196504314,
   "min_gradient_pct": 0.14038804796541626
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.051222917008545,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 365.0,
   "end_distance_m": 390.0,
   "start_elevation_m": 152.403756235791,
   "end_elevation_m": 157.41656196504314,
   "min_gradient_pct": 0.3925449708284532
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.160460259632714,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 345.0,
   "end_distance_m": 395.0,
   "start_elevation_m": 148.7734873466251,
   "end_elevation_m": 158.35371747644146,
   "min_gradient_pct": 0.9349718734150656
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.28242078059364,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 335.0,
   "end_distance_m": 435.0,
   "start_elevation_m": 146.98747736990842,
   "end_elevation_m": 165.26989815050206,
   "min_gradient_pct": 1.6888531425273356
  }
 ],
 "shape": {
  "ascent_concentration": 0.508,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 243.0,
  "shape_class": "stepped"
 },
 "length_m": 1411.7880422204562,
 "start_elevation_m": 107.1461412916797,
 "end_elevation_m": 213.1998929205325,
 "endpoint_gain_m": 106.05375162885281,
 "overall_gradient_pct": 7.512016567448168,
 "accumulated_ascent_m": 107.46177339646418,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.19603469594199,
   "start_distance_m": 191.0,
   "end_distance_m": 196.0,
   "midpoint_distance_m": 193.5,
   "start_elevation_m": 127.5693387096745,
   "end_elevation_m": 128.7291404444716,
   "start_xy": [
    204800.52057966532,
    226793.0983382771
   ],
   "end_xy": [
    204802.91728411536,
    226788.71019427548
   ]
  },
  "max_10m": {
   "gradient_pct": 20.56812165128008,
   "start_distance_m": 375.0,
   "end_distance_m": 385.0,
   "midpoint_distance_m": 380.0,
   "start_elevation_m": 154.3386974109394,
   "end_elevation_m": 156.3955095760674,
   "start_xy": [
    204921.68334793174,
    226655.8674045868
   ],
   "end_xy": [
    204927.660851882,
    226647.8508161643
   ]
  },
  "max_20m": {
   "gradient_pct": 20.231835605466557,
   "start_distance_m": 370.0,
   "end_distance_m": 390.0,
   "midpoint_distance_m": 380.0,
   "start_elevation_m": 153.37019484394983,
   "end_elevation_m": 157.41656196504314,
   "start_xy": [
    204918.658110273,
    226659.8483513471
   ],
   "end_xy": [
    204930.63312286852,
    226643.83016880564
   ]
  },
  "max_25m": {
   "gradient_pct": 20.051222917008545,
   "start_distance_m": 365.0,
   "end_distance_m": 390.0,
   "midpoint_distance_m": 377.5,
   "start_elevation_m": 152.403756235791,
   "end_elevation_m": 157.41656196504314,
   "start_xy": [
    204915.6328726143,
    226663.8292981074
   ],
   "end_xy": [
    204930.63312286852,
    226643.83016880564
   ]
  },
  "max_50m": {
   "gradient_pct": 19.160460259632714,
   "start_distance_m": 345.0,
   "end_distance_m": 395.0,
   "midpoint_distance_m": 370.0,
   "start_elevation_m": 148.7734873466251,
   "end_elevation_m": 158.35371747644146,
   "start_xy": [
    204903.53192197942,
    226679.75308514855
   ],
   "end_xy": [
    204933.605393855,
    226639.80952144696
   ]
  },
  "max_100m": {
   "gradient_pct": 18.28242078059364,
   "start_distance_m": 335.0,
   "end_distance_m": 435.0,
   "midpoint_distance_m": 385.0,
   "start_elevation_m": 146.98747736990842,
   "end_elevation_m": 165.26989815050206,
   "start_xy": [
    204897.481446662,
    226687.71497866913
   ],
   "end_xy": [
    204958.0183122299,
    226608.15314499606
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -24.767114237878616,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 107.1461412916797,
   "end_elevation_m": 105.90778557978577,
   "start_xy": [
    204700.933,
    226954.647
   ],
   "end_xy": [
    204703.14526161886,
    226950.16303986084
   ]
  },
  "min_10m": {
   "gradient_pct": -9.283378785204945,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 107.1461412916797,
   "end_elevation_m": 106.2178034131592,
   "start_xy": [
    204700.933,
    226954.647
   ],
   "end_xy": [
    204705.36208649207,
    226945.6815347639
   ]
  },
  "min_20m": {
   "gradient_pct": 0.14038804796541626,
   "start_distance_m": 1297.0,
   "end_distance_m": 1317.0,
   "midpoint_distance_m": 1307.0,
   "start_elevation_m": 209.54591334921207,
   "end_elevation_m": 209.57399095880515,
   "start_xy": [
    205609.28045262402,
    226077.7048155632
   ],
   "end_xy": [
    205625.0282483798,
    226065.4046187313
   ]
  },
  "min_25m": {
   "gradient_pct": 0.3925449708284532,
   "start_distance_m": 1294.0,
   "end_distance_m": 1319.0,
   "midpoint_distance_m": 1306.5,
   "start_elevation_m": 209.50450438364513,
   "end_elevation_m": 209.60264062635224,
   "start_xy": [
    205606.80920610306,
    226079.40466190892
   ],
   "end_xy": [
    205626.57924596552,
    226064.1423401821
   ]
  },
  "min_50m": {
   "gradient_pct": 0.9349718734150656,
   "start_distance_m": 1269.0,
   "end_distance_m": 1319.0,
   "midpoint_distance_m": 1294.0,
   "start_elevation_m": 209.1351546896447,
   "end_elevation_m": 209.60264062635224,
   "start_xy": [
    205585.96216636902,
    226093.20324641338
   ],
   "end_xy": [
    205626.57924596552,
    226064.1423401821
   ]
  },
  "min_100m": {
   "gradient_pct": 1.6888531425273356,
   "start_distance_m": 1219.0,
   "end_distance_m": 1319.0,
   "midpoint_distance_m": 1269.0,
   "start_elevation_m": 207.9137874838249,
   "end_elevation_m": 209.60264062635224,
   "start_xy": [
    205544.2680869009,
    226120.8004154223
   ],
   "end_xy": [
    205626.57924596552,
    226064.1423401821
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 26.16090291836599,
   "start_distance_m": 195.0,
   "end_distance_m": 197.0,
   "midpoint_distance_m": 196.0,
   "start_elevation_m": 128.2876595789111,
   "end_elevation_m": 128.81087763727842,
   "start_xy": [
    204802.43794322535,
    226789.5878230758
   ],
   "end_xy": [
    204803.4718049014,
    226787.8785524955
   ]
  },
  "max_3m": {
   "gradient_pct": 26.620346738270467,
   "start_distance_m": 195.0,
   "end_distance_m": 198.0,
   "midpoint_distance_m": 196.5,
   "start_elevation_m": 128.2876595789111,
   "end_elevation_m": 129.08626998105922,
   "start_xy": [
    204802.43794322535,
    226789.5878230758
   ],
   "end_xy": [
    204804.03483066303,
    226787.05211315
   ]
  }
 },
 "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": 0.018,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.387,
   "obstruction_max_height_m": 22.42,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    0.0,
    24.0
   ]
  ],
  "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_2_204226_20201205dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_2_205226_20201205dtm.tif"
  ],
  "calculated_at": "2026-09-04T22:06:20+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": "hunt-wales-260905",
  "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_2_204226_20201205dtm.tif",
   "wg_del_2_205226_20201205dtm.tif"
  ],
  "elevation_capture_dates": [
   "05-12-2020"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Henry's Moat",
  "county": "Sir Benfro - Pembrokeshire"
 }
}