{
 "ocl_version": "0.1.0",
 "name": "Pant Du",
 "slug": "pant-du",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 37.311375929138535,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 363.0,
   "end_distance_m": 365.0,
   "start_elevation_m": 318.7087164848121,
   "end_elevation_m": 319.45494400339487,
   "min_gradient_pct": -9.692783183302822
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 35.49399061485966,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 362.0,
   "end_distance_m": 365.0,
   "start_elevation_m": 318.3901242849491,
   "end_elevation_m": 319.45494400339487,
   "min_gradient_pct": -6.952145097807261
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 31.753683084117483,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 362.0,
   "end_distance_m": 367.0,
   "start_elevation_m": 318.3901242849491,
   "end_elevation_m": 319.97780843915496,
   "min_gradient_pct": -4.872402553500024
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 30.407068237192902,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 362.0,
   "end_distance_m": 372.0,
   "start_elevation_m": 318.3901242849491,
   "end_elevation_m": 321.4308311086684,
   "min_gradient_pct": -2.9321823235335387
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 27.5455885749804,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 358.0,
   "end_distance_m": 378.0,
   "start_elevation_m": 317.3523802863858,
   "end_elevation_m": 322.8614980013819,
   "min_gradient_pct": -1.863304196754143
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 26.926585284744306,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 357.0,
   "end_distance_m": 382.0,
   "start_elevation_m": 317.09609228463927,
   "end_elevation_m": 323.82773860582535,
   "min_gradient_pct": -1.7896644812187787
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 25.439666814093584,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 361.0,
   "end_distance_m": 411.0,
   "start_elevation_m": 318.16056396087714,
   "end_elevation_m": 330.88039736792393,
   "min_gradient_pct": -0.9663582187117754
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 23.457815306246,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure",
    "no_bench_excluded"
   ],
   "start_distance_m": 317.0,
   "end_distance_m": 417.0,
   "start_elevation_m": 308.89920052070784,
   "end_elevation_m": 332.35701582695384,
   "min_gradient_pct": 1.7262949749077166,
   "suppressed_max_gradient_pct": 23.990654299092284,
   "suppressed_location_m": [
    357.0,
    457.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.418,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 343.0,
  "shape_class": "sustained"
 },
 "length_m": 819.6112799173394,
 "start_elevation_m": 271.3336379272456,
 "end_elevation_m": 372.57005723571837,
 "endpoint_gain_m": 101.23641930847276,
 "overall_gradient_pct": 12.35176013178867,
 "accumulated_ascent_m": 102.59810730018143,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 31.753683084117483,
   "start_distance_m": 362.0,
   "end_distance_m": 367.0,
   "midpoint_distance_m": 364.5,
   "start_elevation_m": 318.3901242849491,
   "end_elevation_m": 319.97780843915496,
   "start_xy": [
    325224.20324739453,
    339777.4499532158
   ],
   "end_xy": [
    325226.4224256785,
    339781.93049422593
   ]
  },
  "max_10m": {
   "gradient_pct": 30.407068237192902,
   "start_distance_m": 362.0,
   "end_distance_m": 372.0,
   "midpoint_distance_m": 367.0,
   "start_elevation_m": 318.3901242849491,
   "end_elevation_m": 321.4308311086684,
   "start_xy": [
    325224.20324739453,
    339777.4499532158
   ],
   "end_xy": [
    325228.64160396246,
    339786.41103523615
   ]
  },
  "max_20m": {
   "gradient_pct": 27.5455885749804,
   "start_distance_m": 358.0,
   "end_distance_m": 378.0,
   "midpoint_distance_m": 368.0,
   "start_elevation_m": 317.3523802863858,
   "end_elevation_m": 322.8614980013819,
   "start_xy": [
    325222.4279047674,
    339773.8655204076
   ],
   "end_xy": [
    325231.3046179032,
    339791.78768444835
   ]
  },
  "max_25m": {
   "gradient_pct": 26.926585284744306,
   "start_distance_m": 357.0,
   "end_distance_m": 382.0,
   "midpoint_distance_m": 369.5,
   "start_elevation_m": 317.09609228463927,
   "end_elevation_m": 323.82773860582535,
   "start_xy": [
    325221.9840691106,
    339772.96941220557
   ],
   "end_xy": [
    325233.07996053033,
    339795.3721172565
   ]
  },
  "max_50m": {
   "gradient_pct": 25.439666814093584,
   "start_distance_m": 361.0,
   "end_distance_m": 411.0,
   "midpoint_distance_m": 386.0,
   "start_elevation_m": 318.16056396087714,
   "end_elevation_m": 330.88039736792393,
   "start_xy": [
    325223.75941173773,
    339776.5538450137
   ],
   "end_xy": [
    325245.95119457727,
    339821.3592551157
   ]
  },
  "max_100m": {
   "gradient_pct": 23.457815306246,
   "start_distance_m": 317.0,
   "end_distance_m": 417.0,
   "midpoint_distance_m": 367.0,
   "start_elevation_m": 308.89920052070784,
   "end_elevation_m": 332.35701582695384,
   "start_xy": [
    325205.9698742764,
    339736.3601061345
   ],
   "end_xy": [
    325248.614208518,
    339826.7359043279
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -4.872402553500024,
   "start_distance_m": 783.0,
   "end_distance_m": 788.0,
   "midpoint_distance_m": 785.5,
   "start_elevation_m": 372.9765005278665,
   "end_elevation_m": 372.7328804001915,
   "start_xy": [
    325401.7535321131,
    340154.7533639384
   ],
   "end_xy": [
    325403.629520595,
    340159.38808800955
   ]
  },
  "min_10m": {
   "gradient_pct": -2.9321823235335387,
   "start_distance_m": 784.0,
   "end_distance_m": 794.0,
   "midpoint_distance_m": 789.0,
   "start_elevation_m": 372.96340893847605,
   "end_elevation_m": 372.6701907061227,
   "start_xy": [
    325402.1287298095,
    340155.68030875264
   ],
   "end_xy": [
    325405.8807067734,
    340164.9497568949
   ]
  },
  "min_20m": {
   "gradient_pct": -1.863304196754143,
   "start_distance_m": 776.0,
   "end_distance_m": 796.0,
   "midpoint_distance_m": 786.0,
   "start_elevation_m": 373.04741347543677,
   "end_elevation_m": 372.67475263608594,
   "start_xy": [
    325399.12714823836,
    340148.2647502388
   ],
   "end_xy": [
    325406.63110216614,
    340166.80364652333
   ]
  },
  "min_25m": {
   "gradient_pct": -1.7896644812187787,
   "start_distance_m": 776.0,
   "end_distance_m": 801.0,
   "midpoint_distance_m": 788.5,
   "start_elevation_m": 373.04741347543677,
   "end_elevation_m": 372.5999973551321,
   "start_xy": [
    325399.12714823836,
    340148.2647502388
   ],
   "end_xy": [
    325408.5070906481,
    340171.43837059446
   ]
  },
  "min_50m": {
   "gradient_pct": -0.9663582187117754,
   "start_distance_m": 768.0,
   "end_distance_m": 818.0,
   "midpoint_distance_m": 793.0,
   "start_elevation_m": 373.09426416166053,
   "end_elevation_m": 372.61108505230465,
   "start_xy": [
    325396.12556666724,
    340140.849191725
   ],
   "end_xy": [
    325414.88545148674,
    340187.19643243635
   ]
  },
  "min_100m": {
   "gradient_pct": 1.7262949749077166,
   "start_distance_m": 719.0,
   "end_distance_m": 819.0,
   "midpoint_distance_m": 769.0,
   "start_elevation_m": 370.85183295379335,
   "end_elevation_m": 372.57812792870106,
   "start_xy": [
    325379.65149251954,
    340094.75836531905
   ],
   "end_xy": [
    325415.2606491832,
    340188.12337725057
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 37.311375929138535,
   "start_distance_m": 363.0,
   "end_distance_m": 365.0,
   "midpoint_distance_m": 364.0,
   "start_elevation_m": 318.7087164848121,
   "end_elevation_m": 319.45494400339487,
   "start_xy": [
    325224.6470830513,
    339778.3460614178
   ],
   "end_xy": [
    325225.5347543649,
    339780.1382778219
   ]
  },
  "max_3m": {
   "gradient_pct": 35.49399061485966,
   "start_distance_m": 362.0,
   "end_distance_m": 365.0,
   "midpoint_distance_m": 363.5,
   "start_elevation_m": 318.3901242849491,
   "end_elevation_m": 319.45494400339487,
   "start_xy": [
    325224.20324739453,
    339777.4499532158
   ],
   "end_xy": [
    325225.5347543649,
    339780.1382778219
   ]
  }
 },
 "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": {
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.558,
   "obstruction_max_height_m": 26.51,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "no_bench_suppression": {
   "masked_fraction": 0.1,
   "windows_resited": [
    100.0
   ],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    120.0,
    170.0
   ],
   [
    420.0,
    450.0
   ]
  ],
  "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_1_324339_20200326dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_1_324340_20200326dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_1_325339_20200326dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_1_325340_20200326dtm.tif"
  ],
  "calculated_at": "2026-08-20T23:05:48+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",
  "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_1_324339_20200326dtm.tif",
   "wg_del_1_324340_20200326dtm.tif",
   "wg_del_1_325339_20200326dtm.tif",
   "wg_del_1_325340_20200326dtm.tif"
  ],
  "elevation_capture_dates": [
   "26-03-2020"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 17.4% over 200 m (Terrain 50), gain 34.8 m over 182 m way. EXTENDED by graph walk: +1 segment(s) at base, +1 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting. DEDUPE: absorbed 2 overlapping proposal(s): pant-du-2, pant-du-3 ADOPTED (notable slice 2026-08-11): qualified-steep.",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 }
}