{
 "ocl_version": "0.1.0",
 "name": "Mountain Lane",
 "slug": "mountain-lane",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 37.95000000000073,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "no_bench_excluded",
    "canopy_or_structure",
    "published_excluded",
    "published_excluded_min",
    "texture_excluded"
   ],
   "start_distance_m": 343.0,
   "end_distance_m": 345.0,
   "start_elevation_m": 161.9697,
   "end_elevation_m": 162.7287,
   "min_gradient_pct": -13.984999999999559,
   "suppressed_max_gradient_pct": 66.72224333839836,
   "suppressed_location_m": [
    357.0,
    359.0
   ],
   "suppressed_min_gradient_pct": -15.294999999998993,
   "suppressed_min_location_m": [
    361.0,
    363.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 34.03000000000039,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "no_bench_excluded",
    "canopy_or_structure",
    "published_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 332.0,
   "end_distance_m": 335.0,
   "start_elevation_m": 160.2877,
   "end_elevation_m": 161.3086,
   "min_gradient_pct": -6.913333333333564,
   "suppressed_max_gradient_pct": 52.61031497623397,
   "suppressed_location_m": [
    356.0,
    359.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 28.729999999999905,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure",
    "published_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 331.0,
   "end_distance_m": 336.0,
   "start_elevation_m": 160.1344,
   "end_elevation_m": 161.5709,
   "min_gradient_pct": -1.2760000000000105,
   "suppressed_max_gradient_pct": 39.82104416946811,
   "suppressed_location_m": [
    356.0,
    361.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.07000000000005,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure",
    "texture_excluded"
   ],
   "start_distance_m": 546.0,
   "end_distance_m": 556.0,
   "start_elevation_m": 190.2905,
   "end_elevation_m": 192.7975,
   "min_gradient_pct": 2.3859999999999104,
   "suppressed_max_gradient_pct": 31.655000000000086,
   "suppressed_location_m": [
    587.0,
    597.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.724500000000063,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure",
    "texture_excluded"
   ],
   "start_distance_m": 548.0,
   "end_distance_m": 568.0,
   "start_elevation_m": 190.7052,
   "end_elevation_m": 195.2501,
   "min_gradient_pct": 4.32699999999997,
   "suppressed_max_gradient_pct": 25.058000000000078,
   "suppressed_location_m": [
    587.0,
    607.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.273599999999988,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure",
    "published_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 547.0,
   "end_distance_m": 572.0,
   "start_elevation_m": 190.4541,
   "end_elevation_m": 196.0225,
   "min_gradient_pct": 4.988399999999956,
   "suppressed_max_gradient_pct": 25.21734154346973,
   "suppressed_location_m": [
    587.0,
    612.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.586399999999966,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure",
    "texture_excluded"
   ],
   "start_distance_m": 533.0,
   "end_distance_m": 583.0,
   "start_elevation_m": 188.0945,
   "end_elevation_m": 198.3877,
   "min_gradient_pct": 7.3186000000000035,
   "suppressed_max_gradient_pct": 23.042799999999996,
   "suppressed_location_m": [
    548.0,
    598.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.73599999999999,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure",
    "published_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 484.0,
   "end_distance_m": 584.0,
   "start_elevation_m": 182.7534,
   "end_elevation_m": 198.4894,
   "min_gradient_pct": 8.671599999999984,
   "suppressed_max_gradient_pct": 21.270160689045156,
   "suppressed_location_m": [
    533.0,
    633.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.327,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 216.0,
  "shape_class": "sustained"
 },
 "length_m": 878.8050287770077,
 "start_elevation_m": 124.10366777572685,
 "end_elevation_m": 243.98173791488534,
 "endpoint_gain_m": 119.8780701391585,
 "overall_gradient_pct": 13.641031424909716,
 "accumulated_ascent_m": 122.2022882745999,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 28.729999999999905,
   "start_distance_m": 331.0,
   "end_distance_m": 336.0,
   "midpoint_distance_m": 333.5,
   "start_elevation_m": 160.1344,
   "end_elevation_m": 161.5709,
   "start_xy": [
    272753.812,
    375898.054
   ],
   "end_xy": [
    272757.978,
    375895.292
   ]
  },
  "max_10m": {
   "gradient_pct": 25.07000000000005,
   "start_distance_m": 546.0,
   "end_distance_m": 556.0,
   "midpoint_distance_m": 551.0,
   "start_elevation_m": 190.2905,
   "end_elevation_m": 192.7975,
   "start_xy": [
    272907.678,
    375770.613
   ],
   "end_xy": [
    272917.306,
    375771.686
   ]
  },
  "max_20m": {
   "gradient_pct": 22.724500000000063,
   "start_distance_m": 548.0,
   "end_distance_m": 568.0,
   "midpoint_distance_m": 558.0,
   "start_elevation_m": 190.7052,
   "end_elevation_m": 195.2501,
   "start_xy": [
    272909.62,
    375770.135
   ],
   "end_xy": [
    272927.936,
    375777.154
   ]
  },
  "max_25m": {
   "gradient_pct": 22.273599999999988,
   "start_distance_m": 547.0,
   "end_distance_m": 572.0,
   "midpoint_distance_m": 559.5,
   "start_elevation_m": 190.4541,
   "end_elevation_m": 196.0225,
   "start_xy": [
    272908.649,
    375770.374
   ],
   "end_xy": [
    272931.195,
    375779.441
   ]
  },
  "max_50m": {
   "gradient_pct": 20.586399999999966,
   "start_distance_m": 533.0,
   "end_distance_m": 583.0,
   "midpoint_distance_m": 558.0,
   "start_elevation_m": 188.0945,
   "end_elevation_m": 198.3877,
   "start_xy": [
    272896.487,
    375776.691
   ],
   "end_xy": [
    272939.543,
    375786.604
   ]
  },
  "max_100m": {
   "gradient_pct": 15.73599999999999,
   "start_distance_m": 484.0,
   "end_distance_m": 584.0,
   "midpoint_distance_m": 534.0,
   "start_elevation_m": 182.7534,
   "end_elevation_m": 198.4894,
   "start_xy": [
    272880.838,
    375821.582
   ],
   "end_xy": [
    272940.302,
    375787.255
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -1.2760000000000105,
   "start_distance_m": 19.0,
   "end_distance_m": 24.0,
   "midpoint_distance_m": 21.5,
   "start_elevation_m": 125.7717,
   "end_elevation_m": 125.7079,
   "start_xy": [
    272602.748,
    376066.418
   ],
   "end_xy": [
    272598.579,
    376063.657
   ]
  },
  "min_10m": {
   "gradient_pct": 2.3859999999999104,
   "start_distance_m": 61.0,
   "end_distance_m": 71.0,
   "midpoint_distance_m": 66.0,
   "start_elevation_m": 130.6627,
   "end_elevation_m": 130.9013,
   "start_xy": [
    272563.286,
    376054.271
   ],
   "end_xy": [
    272557.662,
    376046.978
   ]
  },
  "min_20m": {
   "gradient_pct": 4.32699999999997,
   "start_distance_m": 61.0,
   "end_distance_m": 81.0,
   "midpoint_distance_m": 71.0,
   "start_elevation_m": 130.6627,
   "end_elevation_m": 131.5281,
   "start_xy": [
    272563.286,
    376054.271
   ],
   "end_xy": [
    272560.189,
    376037.304
   ]
  },
  "min_25m": {
   "gradient_pct": 4.988399999999956,
   "start_distance_m": 56.0,
   "end_distance_m": 81.0,
   "midpoint_distance_m": 68.5,
   "start_elevation_m": 130.281,
   "end_elevation_m": 131.5281,
   "start_xy": [
    272567.96,
    376055.9
   ],
   "end_xy": [
    272560.189,
    376037.304
   ]
  },
  "min_50m": {
   "gradient_pct": 7.3186000000000035,
   "start_distance_m": 52.0,
   "end_distance_m": 102.0,
   "midpoint_distance_m": 77.0,
   "start_elevation_m": 129.892,
   "end_elevation_m": 133.5513,
   "start_xy": [
    272571.853,
    376056.817
   ],
   "end_xy": [
    272565.892,
    376017.094
   ]
  },
  "min_100m": {
   "gradient_pct": 8.671599999999984,
   "start_distance_m": 55.0,
   "end_distance_m": 155.0,
   "midpoint_distance_m": 105.0,
   "start_elevation_m": 130.1733,
   "end_elevation_m": 138.8449,
   "start_xy": [
    272568.933,
    376056.129
   ],
   "end_xy": [
    272600.588,
    375980.551
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 37.95000000000073,
   "start_distance_m": 343.0,
   "end_distance_m": 345.0,
   "midpoint_distance_m": 344.0,
   "start_elevation_m": 161.9697,
   "end_elevation_m": 162.7287,
   "start_xy": [
    272763.885,
    375891.549
   ],
   "end_xy": [
    272765.802,
    375890.981
   ]
  },
  "max_3m": {
   "gradient_pct": 34.03000000000039,
   "start_distance_m": 332.0,
   "end_distance_m": 335.0,
   "midpoint_distance_m": 333.5,
   "start_elevation_m": 160.2877,
   "end_elevation_m": 161.3086,
   "start_xy": [
    272754.628,
    375897.476
   ],
   "end_xy": [
    272757.138,
    375895.834
   ]
  }
 },
 "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": 0.007,
   "windows_resited": [
    2.0,
    3.0,
    5.0
   ],
   "windows_unresolved": []
  },
  "no_bench_suppression": {
   "masked_fraction": 0.089,
   "windows_resited": [
    2.0,
    3.0,
    25.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.367,
   "obstruction_max_height_m": 21.65,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    356.0,
    361.0
   ],
   [
    585.0,
    640.0
   ],
   [
    660.0,
    700.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_end"
  ],
  "texture_suppression": {
   "masked_fraction": 0.117,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 20.0,
     "start_m": 587.0,
     "end_m": 607.0,
     "raw_pct": 25.06,
     "reason": "mask-edge"
    }
   ],
   "advisory": [],
   "unresolved": []
  }
 },
 "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_19_272375_20211221dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_19_273375_20211221dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_19_273376_20211221dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_27_272376_20220305dtm.tif"
  ],
  "calculated_at": "2026-09-04T22:04:35+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_19_272375_20211221dtm.tif",
   "wg_del_19_273375_20211221dtm.tif",
   "wg_del_19_273376_20211221dtm.tif",
   "wg_del_27_272376_20220305dtm.tif"
  ],
  "elevation_capture_dates": [
   "05-03-2022",
   "22-12-2021"
  ],
  "climb_origin": "discovered",
  "qa_replayed": {
   "on": "2026-09-20",
   "rule": "window texture with the sampling-stability gate (retro suppression-verdicts-stability; Peter 2026-09-20)",
   "retro": [
    "window-texture",
    "hump-advisory",
    "suppression-verdict-stability"
   ],
   "method": "replayed over the page's own published profile \u2014 no raster, no re-line, no re-resample",
   "script": "scripts/texture_sweep_apply.py",
   "code_git_sha": "fd294479d730",
   "published_max25_pct": 24.33,
   "max25_pct": 22.27,
   "move_pp": -2.05,
   "reasons": "mask-edge"
  },
  "remeasured": {
   "on": "2026-09-20",
   "why": "texture replay (texture-replay)",
   "published_max25_pct": 24.33,
   "max25_pct": 22.27
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Penmaenmawr",
  "county": "Conwy - Conwy"
 }
}