{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (53.1133, -3.7643)",
 "slug": "discovered-lane-53-1133-3-7643",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 46.79924414699599,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "no_bench_excluded"
   ],
   "start_distance_m": 3222.0,
   "end_distance_m": 3224.0,
   "start_elevation_m": 316.01091822907733,
   "end_elevation_m": 316.94690311201725,
   "min_gradient_pct": -91.03811134217068,
   "suppressed_max_gradient_pct": 101.2638990150748,
   "suppressed_location_m": [
    1961.0,
    1963.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 43.67452256828225,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "no_bench_excluded"
   ],
   "start_distance_m": 3222.0,
   "end_distance_m": 3225.0,
   "start_elevation_m": 316.01091822907733,
   "end_elevation_m": 317.3211539061258,
   "min_gradient_pct": -87.45632750204209,
   "suppressed_max_gradient_pct": 94.22710314417013,
   "suppressed_location_m": [
    1960.0,
    1963.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 36.9967177490426,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 203.0,
   "end_distance_m": 208.0,
   "start_elevation_m": 29.234038647694007,
   "end_elevation_m": 31.083874535146137,
   "min_gradient_pct": -66.20924357797321,
   "suppressed_max_gradient_pct": 69.22536456487876,
   "suppressed_location_m": [
    1959.0,
    1964.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 31.894698301597266,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 201.0,
   "end_distance_m": 211.0,
   "start_elevation_m": 28.698006423512656,
   "end_elevation_m": 31.887476253672382,
   "min_gradient_pct": -42.20536819607162,
   "suppressed_max_gradient_pct": 52.253851414927794,
   "suppressed_location_m": [
    2295.0,
    2305.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 26.752006259360336,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 189.0,
   "end_distance_m": 209.0,
   "start_elevation_m": 26.12245486667723,
   "end_elevation_m": 31.4728561185493,
   "min_gradient_pct": -28.192876834385743,
   "suppressed_max_gradient_pct": 40.26370702435301,
   "suppressed_location_m": [
    2288.0,
    2308.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 25.621017853706192,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 188.0,
   "end_distance_m": 213.0,
   "start_elevation_m": 25.89660410099084,
   "end_elevation_m": 32.30185856441739,
   "min_gradient_pct": -25.098991406895834,
   "suppressed_max_gradient_pct": 36.78451347946259,
   "suppressed_location_m": [
    2283.0,
    2308.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.487400166509588,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1467.0,
   "end_distance_m": 1517.0,
   "start_elevation_m": 173.49171788445625,
   "end_elevation_m": 184.23541796771104,
   "min_gradient_pct": -20.022356837540315,
   "suppressed_max_gradient_pct": 27.65007144673939,
   "suppressed_location_m": [
    2286.0,
    2336.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.734240424918966,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1417.0,
   "end_distance_m": 1517.0,
   "start_elevation_m": 163.50117754279208,
   "end_elevation_m": 184.23541796771104,
   "min_gradient_pct": -9.875856370601923,
   "suppressed_max_gradient_pct": 23.390122035568425,
   "suppressed_location_m": [
    2238.0,
    2338.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.347,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 194.0,
  "shape_class": "sustained"
 },
 "length_m": 4820.305145897905,
 "start_elevation_m": 13.246426210900305,
 "end_elevation_m": 383.6291261772153,
 "endpoint_gain_m": 370.382699966315,
 "overall_gradient_pct": 7.683801932778297,
 "accumulated_ascent_m": 422.73937656869964,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 36.9967177490426,
   "start_distance_m": 203.0,
   "end_distance_m": 208.0,
   "midpoint_distance_m": 205.5,
   "start_elevation_m": 29.234038647694007,
   "end_elevation_m": 31.083874535146137,
   "start_xy": [
    281064.76794135966,
    359219.5847287178
   ],
   "end_xy": [
    281067.73760432866,
    359223.60730275075
   ]
  },
  "max_10m": {
   "gradient_pct": 31.894698301597266,
   "start_distance_m": 201.0,
   "end_distance_m": 211.0,
   "midpoint_distance_m": 206.0,
   "start_elevation_m": 28.698006423512656,
   "end_elevation_m": 31.887476253672382,
   "start_xy": [
    281063.3365470991,
    359218.32365373534
   ],
   "end_xy": [
    281069.51940211,
    359226.02084717056
   ]
  },
  "max_20m": {
   "gradient_pct": 26.752006259360336,
   "start_distance_m": 189.0,
   "end_distance_m": 209.0,
   "midpoint_distance_m": 199.0,
   "start_elevation_m": 26.12245486667723,
   "end_elevation_m": 31.4728561185493,
   "start_xy": [
    281051.82548684144,
    359214.9331535149
   ],
   "end_xy": [
    281068.33153692243,
    359224.41181755735
   ]
  },
  "max_25m": {
   "gradient_pct": 25.621017853706192,
   "start_distance_m": 188.0,
   "end_distance_m": 213.0,
   "midpoint_distance_m": 200.5,
   "start_elevation_m": 25.89660410099084,
   "end_elevation_m": 32.30185856441739,
   "start_xy": [
    281050.86623181996,
    359214.6506118299
   ],
   "end_xy": [
    281070.7072672976,
    359227.62987678376
   ]
  },
  "max_50m": {
   "gradient_pct": 21.487400166509588,
   "start_distance_m": 1467.0,
   "end_distance_m": 1517.0,
   "midpoint_distance_m": 1492.0,
   "start_elevation_m": 173.49171788445625,
   "end_elevation_m": 184.23541796771104,
   "start_xy": [
    281799.0317111521,
    359147.28491773544
   ],
   "end_xy": [
    281799.1068504387,
    359097.2849741946
   ]
  },
  "max_100m": {
   "gradient_pct": 20.734240424918966,
   "start_distance_m": 1417.0,
   "end_distance_m": 1517.0,
   "midpoint_distance_m": 1467.0,
   "start_elevation_m": 163.50117754279208,
   "end_elevation_m": 184.23541796771104,
   "start_xy": [
    281796.63348115317,
    359197.17141430185
   ],
   "end_xy": [
    281799.1068504387,
    359097.2849741946
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -66.20924357797321,
   "start_distance_m": 1936.0,
   "end_distance_m": 1941.0,
   "midpoint_distance_m": 1938.5,
   "start_elevation_m": 207.3399210951842,
   "end_elevation_m": 204.02945891628553,
   "start_xy": [
    282061.08092488523,
    358819.62455727864
   ],
   "end_xy": [
    282066.0809215321,
    358819.63034788624
   ]
  },
  "min_10m": {
   "gradient_pct": -42.20536819607162,
   "start_distance_m": 1934.0,
   "end_distance_m": 1944.0,
   "midpoint_distance_m": 1939.0,
   "start_elevation_m": 207.6377171143261,
   "end_elevation_m": 203.41718029471895,
   "start_xy": [
    282059.0809262265,
    358819.6222410356
   ],
   "end_xy": [
    282069.07905895234,
    358819.72625026014
   ]
  },
  "min_20m": {
   "gradient_pct": -28.192876834385743,
   "start_distance_m": 1925.0,
   "end_distance_m": 1945.0,
   "midpoint_distance_m": 1935.0,
   "start_elevation_m": 208.91100935763717,
   "end_elevation_m": 203.27243399076002,
   "start_xy": [
    282050.08932517,
    358819.3699069964
   ],
   "end_xy": [
    282070.07829479047,
    358819.765336572
   ]
  },
  "min_25m": {
   "gradient_pct": -25.098991406895834,
   "start_distance_m": 1920.0,
   "end_distance_m": 1945.0,
   "midpoint_distance_m": 1932.5,
   "start_elevation_m": 209.54718184248398,
   "end_elevation_m": 203.27243399076002,
   "start_xy": [
    282045.1044006626,
    358818.9862903905
   ],
   "end_xy": [
    282070.07829479047,
    358819.765336572
   ]
  },
  "min_50m": {
   "gradient_pct": -20.022356837540315,
   "start_distance_m": 1894.0,
   "end_distance_m": 1944.0,
   "midpoint_distance_m": 1919.0,
   "start_elevation_m": 213.4283587134891,
   "end_elevation_m": 203.41718029471895,
   "start_xy": [
    282020.2514693775,
    358811.8205774309
   ],
   "end_xy": [
    282069.07905895234,
    358819.72625026014
   ]
  },
  "min_100m": {
   "gradient_pct": -9.875856370601923,
   "start_distance_m": 1846.0,
   "end_distance_m": 1946.0,
   "midpoint_distance_m": 1896.0,
   "start_elevation_m": 213.0796607142761,
   "end_elevation_m": 203.20380434367416,
   "start_xy": [
    281984.90417440154,
    358833.1766064971
   ],
   "end_xy": [
    282071.0775306286,
    358819.80442288384
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 46.79924414699599,
   "start_distance_m": 3222.0,
   "end_distance_m": 3224.0,
   "midpoint_distance_m": 3223.0,
   "start_elevation_m": 316.01091822907733,
   "end_elevation_m": 316.94690311201725,
   "start_xy": [
    283161.62681416766,
    358575.3078865632
   ],
   "end_xy": [
    283163.5171636294,
    358574.65475647466
   ]
  },
  "max_3m": {
   "gradient_pct": 43.67452256828225,
   "start_distance_m": 3222.0,
   "end_distance_m": 3225.0,
   "midpoint_distance_m": 3223.5,
   "start_elevation_m": 316.01091822907733,
   "end_elevation_m": 317.3211539061258,
   "start_xy": [
    283161.62681416766,
    358575.3078865632
   ],
   "end_xy": [
    283164.46233836026,
    358574.3281914304
   ]
  }
 },
 "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": 0.012,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "no_bench_suppression": {
   "masked_fraction": 0.053,
   "windows_resited": [
    2.0,
    3.0
   ],
   "windows_unresolved": []
  },
  "placement_suppression": {
   "masked_fraction": 0.053,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.415,
   "obstruction_max_height_m": 23.58,
   "flagged_windows_m": [
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    340.0,
    370.0
   ],
   [
    1188.0,
    1193.0
   ],
   [
    1932.0,
    1966.0
   ],
   [
    2295.0,
    2301.0
   ],
   [
    2320.0,
    2390.0
   ],
   [
    2410.0,
    2460.0
   ],
   [
    2740.0,
    2780.0
   ],
   [
    2786.0,
    2791.0
   ],
   [
    2885.0,
    2890.0
   ]
  ],
  "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/wales/dtm_1m/wg_del_11_280358_20210302dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_11_280359_20210302dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_11_281358_20210302dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_11_281359_20210302dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_11_282358_20210302dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_11_282359_20210302dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_11_283358_20210302dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_11_283359_20210302dtm.tif"
  ],
  "calculated_at": "2026-09-04T22:05:33+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_11_280358_20210302dtm.tif",
   "wg_del_11_280359_20210302dtm.tif",
   "wg_del_11_281358_20210302dtm.tif",
   "wg_del_11_281359_20210302dtm.tif",
   "wg_del_11_282358_20210302dtm.tif",
   "wg_del_11_282359_20210302dtm.tif",
   "wg_del_11_283358_20210302dtm.tif",
   "wg_del_11_283359_20210302dtm.tif"
  ],
  "elevation_capture_dates": [
   "02-03-2021"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Nant-y-Rhiw",
  "county": "Conwy - Conwy"
 }
}