{
 "ocl_version": "0.1.0",
 "name": "Cwrt",
 "slug": "cwrt",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 24.868361162678454,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 117.0,
   "end_distance_m": 119.0,
   "start_elevation_m": 47.805975057684016,
   "end_elevation_m": 48.303342280937585,
   "min_gradient_pct": -42.29512277658749,
   "suppressed_max_gradient_pct": 120.8783116523275,
   "suppressed_location_m": [
    34.0,
    36.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.4869983093416,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 105.0,
   "end_distance_m": 108.0,
   "start_elevation_m": 45.00486607549105,
   "end_elevation_m": 45.7394760247713,
   "min_gradient_pct": -37.68283408198533,
   "suppressed_max_gradient_pct": 93.78357136098926,
   "suppressed_location_m": [
    34.0,
    37.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.19286319223957,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 114.0,
   "end_distance_m": 119.0,
   "start_elevation_m": 47.093699121325606,
   "end_elevation_m": 48.303342280937585,
   "min_gradient_pct": -32.481011578238395,
   "suppressed_max_gradient_pct": 62.84709154138454,
   "suppressed_location_m": [
    33.0,
    38.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.584118252393225,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 112.0,
   "end_distance_m": 122.0,
   "start_elevation_m": 46.62235118485305,
   "end_elevation_m": 48.980763010092375,
   "min_gradient_pct": -20.433192322914167,
   "suppressed_max_gradient_pct": 33.61773216132683,
   "suppressed_location_m": [
    33.0,
    43.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.080145548596214,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 104.0,
   "end_distance_m": 124.0,
   "start_elevation_m": 44.79657966287055,
   "end_elevation_m": 49.41260877258979,
   "min_gradient_pct": -8.558955847616865
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.671016742374178,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 100.0,
   "end_distance_m": 125.0,
   "start_elevation_m": 43.95173056422623,
   "end_elevation_m": 49.619484749819776,
   "min_gradient_pct": -5.626494197126249
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.556122021966274,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 79.0,
   "end_distance_m": 129.0,
   "start_elevation_m": 39.67771924781938,
   "end_elevation_m": 50.45578025880252,
   "min_gradient_pct": 5.049843588737389
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.22343108790475,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 69.0,
   "end_distance_m": 169.0,
   "start_elevation_m": 38.06550193989094,
   "end_elevation_m": 57.28893302779569,
   "min_gradient_pct": 10.695828980111294
  }
 ],
 "shape": {
  "ascent_concentration": 0.392,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 133.0,
  "shape_class": "sustained"
 },
 "length_m": 235.00881613130804,
 "start_elevation_m": 33.25590158411494,
 "end_elevation_m": 62.49486065673698,
 "endpoint_gain_m": 29.238959072622045,
 "overall_gradient_pct": 12.441643489785154,
 "accumulated_ascent_m": 31.457439156499262,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.19286319223957,
   "start_distance_m": 114.0,
   "end_distance_m": 119.0,
   "midpoint_distance_m": 116.5,
   "start_elevation_m": 47.093699121325606,
   "end_elevation_m": 48.303342280937585,
   "start_xy": [
    267481.6691239604,
    307198.11169915326
   ],
   "end_xy": [
    267476.82858220366,
    307199.36435852473
   ]
  },
  "max_10m": {
   "gradient_pct": 23.584118252393225,
   "start_distance_m": 112.0,
   "end_distance_m": 122.0,
   "midpoint_distance_m": 117.0,
   "start_elevation_m": 46.62235118485305,
   "end_elevation_m": 48.980763010092375,
   "start_xy": [
    267483.60534066317,
    307197.61063540465
   ],
   "end_xy": [
    267473.9242571496,
    307200.1159541476
   ]
  },
  "max_20m": {
   "gradient_pct": 23.080145548596214,
   "start_distance_m": 104.0,
   "end_distance_m": 124.0,
   "midpoint_distance_m": 114.0,
   "start_elevation_m": 44.79657966287055,
   "end_elevation_m": 49.41260877258979,
   "start_xy": [
    267491.35020747397,
    307195.6063804103
   ],
   "end_xy": [
    267471.9880404469,
    307200.6170178962
   ]
  },
  "max_25m": {
   "gradient_pct": 22.671016742374178,
   "start_distance_m": 100.0,
   "end_distance_m": 125.0,
   "midpoint_distance_m": 112.5,
   "start_elevation_m": 43.95173056422623,
   "end_elevation_m": 49.619484749819776,
   "start_xy": [
    267495.2226408794,
    307194.60425291315
   ],
   "end_xy": [
    267471.01993209554,
    307200.8675497705
   ]
  },
  "max_50m": {
   "gradient_pct": 21.556122021966274,
   "start_distance_m": 79.0,
   "end_distance_m": 129.0,
   "midpoint_distance_m": 104.0,
   "start_elevation_m": 39.67771924781938,
   "end_elevation_m": 50.45578025880252,
   "start_xy": [
    267515.17062368395,
    307188.09810922004
   ],
   "end_xy": [
    267467.1474986901,
    307201.8696772677
   ]
  },
  "max_100m": {
   "gradient_pct": 19.22343108790475,
   "start_distance_m": 69.0,
   "end_distance_m": 169.0,
   "midpoint_distance_m": 119.0,
   "start_elevation_m": 38.06550193989094,
   "end_elevation_m": 57.28893302779569,
   "start_xy": [
    267524.58937176346,
    307184.7384686716
   ],
   "end_xy": [
    267428.18292020116,
    307203.56165245036
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -32.481011578238395,
   "start_distance_m": 21.0,
   "end_distance_m": 26.0,
   "midpoint_distance_m": 23.5,
   "start_elevation_m": 34.12655464726655,
   "end_elevation_m": 32.50250406835463,
   "start_xy": [
    267566.096336196,
    307161.3987225184
   ],
   "end_xy": [
    267561.9864162426,
    307164.24627549894
   ]
  },
  "min_10m": {
   "gradient_pct": -20.433192322914167,
   "start_distance_m": 20.0,
   "end_distance_m": 30.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 34.22854419676224,
   "end_elevation_m": 32.18522496447083,
   "start_xy": [
    267566.91832018667,
    307160.82921192225
   ],
   "end_xy": [
    267558.69848027994,
    307166.5243178834
   ]
  },
  "min_20m": {
   "gradient_pct": -8.558955847616865,
   "start_distance_m": 13.0,
   "end_distance_m": 33.0,
   "midpoint_distance_m": 23.0,
   "start_elevation_m": 33.76621475987409,
   "end_elevation_m": 32.054423590350716,
   "start_xy": [
    267572.67220812134,
    307156.8426377495
   ],
   "end_xy": [
    267556.23252830794,
    307168.23284967174
   ]
  },
  "min_25m": {
   "gradient_pct": -5.626494197126249,
   "start_distance_m": 8.0,
   "end_distance_m": 33.0,
   "midpoint_distance_m": 20.5,
   "start_elevation_m": 33.46104713963228,
   "end_elevation_m": 32.054423590350716,
   "start_xy": [
    267576.7821280747,
    307153.9950847689
   ],
   "end_xy": [
    267556.23252830794,
    307168.23284967174
   ]
  },
  "min_50m": {
   "gradient_pct": 5.049843588737389,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 33.25590158411494,
   "end_elevation_m": 35.78082337848363,
   "start_xy": [
    267583.358,
    307149.439
   ],
   "end_xy": [
    267542.2588004666,
    307177.91452980565
   ]
  },
  "min_100m": {
   "gradient_pct": 10.695828980111294,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 33.25590158411494,
   "end_elevation_m": 43.95173056422623,
   "start_xy": [
    267583.358,
    307149.439
   ],
   "end_xy": [
    267495.2226408794,
    307194.60425291315
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 24.868361162678454,
   "start_distance_m": 117.0,
   "end_distance_m": 119.0,
   "midpoint_distance_m": 118.0,
   "start_elevation_m": 47.805975057684016,
   "end_elevation_m": 48.303342280937585,
   "start_xy": [
    267478.7647989064,
    307198.8632947761
   ],
   "end_xy": [
    267476.82858220366,
    307199.36435852473
   ]
  },
  "max_3m": {
   "gradient_pct": 24.4869983093416,
   "start_distance_m": 105.0,
   "end_distance_m": 108.0,
   "midpoint_distance_m": 106.5,
   "start_elevation_m": 45.00486607549105,
   "end_elevation_m": 45.7394760247713,
   "start_xy": [
    267490.3820991226,
    307195.8569122846
   ],
   "end_xy": [
    267487.4777740686,
    307196.6085079075
   ]
  }
 },
 "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": 0.136,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.101,
   "obstruction_max_height_m": 7.14,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    15.0,
    46.0
   ]
  ],
  "review": [],
  "extent": [
   "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_22_267307_20220114dtm.tif"
  ],
  "calculated_at": "2026-08-27T06:14:39+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": "chains-wales-pilot-260827",
  "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_22_267307_20220114dtm.tif"
  ],
  "elevation_capture_dates": [
   "14-01-2022"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Abergynolwyn",
  "county": "Gwynedd - Gwynedd"
 }
}