{
 "ocl_version": "0.1.0",
 "name": "Bwlch Esgair Gelli",
 "slug": "bwlch-esgair-gelli",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 55.122342851692,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 1015.0,
   "end_distance_m": 1017.0,
   "start_elevation_m": 392.177492329932,
   "end_elevation_m": 393.27993918696586,
   "min_gradient_pct": -47.63799505928432,
   "suppressed_max_gradient_pct": 81.32821867496318,
   "suppressed_location_m": [
    723.0,
    725.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 50.529021020088294,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 1450.0,
   "end_distance_m": 1453.0,
   "start_elevation_m": 399.0644038079464,
   "end_elevation_m": 400.58027443854905,
   "min_gradient_pct": -35.87617682259179,
   "suppressed_max_gradient_pct": 75.2565800184982,
   "suppressed_location_m": [
    722.0,
    725.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 45.19520774279613,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 1012.0,
   "end_distance_m": 1017.0,
   "start_elevation_m": 391.02017879982606,
   "end_elevation_m": 393.27993918696586,
   "min_gradient_pct": -29.19186040765112,
   "suppressed_max_gradient_pct": 60.80556134394669,
   "suppressed_location_m": [
    722.0,
    727.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 32.11452378250556,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 1447.0,
   "end_distance_m": 1457.0,
   "start_elevation_m": 398.2911782447786,
   "end_elevation_m": 401.5026306230292,
   "min_gradient_pct": -25.550803196574066,
   "suppressed_max_gradient_pct": 40.78562349409992,
   "suppressed_location_m": [
    719.0,
    729.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.328628105516543,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 1438.0,
   "end_distance_m": 1458.0,
   "start_elevation_m": 396.83463618593066,
   "end_elevation_m": 401.70036180703397,
   "min_gradient_pct": -19.75029980836439,
   "suppressed_max_gradient_pct": 27.140412068945068,
   "suppressed_location_m": [
    714.0,
    734.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.69459092142688,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 414.0,
   "end_distance_m": 439.0,
   "start_elevation_m": 368.12702860176154,
   "end_elevation_m": 374.05067633211826,
   "min_gradient_pct": -18.358321390522406
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.611889765384262,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 404.0,
   "end_distance_m": 454.0,
   "start_elevation_m": 366.4050895902402,
   "end_elevation_m": 377.21103447293234,
   "min_gradient_pct": -14.204087528112268
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.879711132785474,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 355.0,
   "end_distance_m": 455.0,
   "start_elevation_m": 357.4992674776266,
   "end_elevation_m": 377.37897861041205,
   "min_gradient_pct": -8.85589502077812
  }
 ],
 "shape": {
  "ascent_concentration": 0.366,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 178.0,
  "shape_class": "sustained"
 },
 "length_m": 2504.999999999981,
 "start_elevation_m": 309.83799964453283,
 "end_elevation_m": 473.44879767694664,
 "endpoint_gain_m": 163.6107980324138,
 "overall_gradient_pct": 6.5313691829307405,
 "accumulated_ascent_m": 206.3700505177232,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 45.19520774279613,
   "start_distance_m": 1012.0,
   "end_distance_m": 1017.0,
   "midpoint_distance_m": 1014.5,
   "start_elevation_m": 391.02017879982606,
   "end_elevation_m": 393.27993918696586,
   "start_xy": [
    279635.4283058208,
    257334.52913793756
   ],
   "end_xy": [
    279630.43605044525,
    257334.80732180728
   ]
  },
  "max_10m": {
   "gradient_pct": 32.11452378250556,
   "start_distance_m": 1447.0,
   "end_distance_m": 1457.0,
   "midpoint_distance_m": 1452.0,
   "start_elevation_m": 398.2911782447786,
   "end_elevation_m": 401.5026306230292,
   "start_xy": [
    279292.8620681454,
    257546.03551584354
   ],
   "end_xy": [
    279283.0215901668,
    257544.69435326697
   ]
  },
  "max_20m": {
   "gradient_pct": 24.328628105516543,
   "start_distance_m": 1438.0,
   "end_distance_m": 1458.0,
   "midpoint_distance_m": 1448.0,
   "start_elevation_m": 396.83463618593066,
   "end_elevation_m": 401.70036180703397,
   "start_xy": [
    279299.9555032703,
    257541.06203597074
   ],
   "end_xy": [
    279282.2768469248,
    257544.02700215738
   ]
  },
  "max_25m": {
   "gradient_pct": 23.69459092142688,
   "start_distance_m": 414.0,
   "end_distance_m": 439.0,
   "midpoint_distance_m": 426.5,
   "start_elevation_m": 368.12702860176154,
   "end_elevation_m": 374.05067633211826,
   "start_xy": [
    280217.2815454537,
    257357.3363030074
   ],
   "end_xy": [
    280196.33884999907,
    257343.68333603707
   ]
  },
  "max_50m": {
   "gradient_pct": 21.611889765384262,
   "start_distance_m": 404.0,
   "end_distance_m": 454.0,
   "midpoint_distance_m": 429.0,
   "start_elevation_m": 366.4050895902402,
   "end_elevation_m": 377.21103447293234,
   "start_xy": [
    280225.6586236356,
    257362.79748979554
   ],
   "end_xy": [
    280183.4583199902,
    257336.0504048857
   ]
  },
  "max_100m": {
   "gradient_pct": 19.879711132785474,
   "start_distance_m": 355.0,
   "end_distance_m": 455.0,
   "midpoint_distance_m": 405.0,
   "start_elevation_m": 357.4992674776266,
   "end_elevation_m": 377.37897861041205,
   "start_xy": [
    280268.75235989306,
    257349.2207964148
   ],
   "end_xy": [
    280182.557254918,
    257335.61672097366
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -29.19186040765112,
   "start_distance_m": 704.0,
   "end_distance_m": 709.0,
   "midpoint_distance_m": 706.5,
   "start_elevation_m": 378.1125197798388,
   "end_elevation_m": 376.65292675945625,
   "start_xy": [
    279940.92009775573,
    257312.4007614582
   ],
   "end_xy": [
    279935.9320122748,
    257312.74572991303
   ]
  },
  "min_10m": {
   "gradient_pct": -25.550803196574066,
   "start_distance_m": 700.0,
   "end_distance_m": 710.0,
   "midpoint_distance_m": 705.0,
   "start_elevation_m": 378.9793675700653,
   "end_elevation_m": 376.4242872504079,
   "start_xy": [
    279944.9105661405,
    257312.12478669436
   ],
   "end_xy": [
    279934.93439517857,
    257312.814723604
   ]
  },
  "min_20m": {
   "gradient_pct": -19.75029980836439,
   "start_distance_m": 1146.0,
   "end_distance_m": 1166.0,
   "midpoint_distance_m": 1156.0,
   "start_elevation_m": 389.6095110637864,
   "end_elevation_m": 385.6594511021135,
   "start_xy": [
    279506.07304635376,
    257357.81620916334
   ],
   "end_xy": [
    279486.0923914683,
    257356.93676049597
   ]
  },
  "min_25m": {
   "gradient_pct": -18.358321390522406,
   "start_distance_m": 1145.0,
   "end_distance_m": 1170.0,
   "midpoint_distance_m": 1157.5,
   "start_elevation_m": 389.731556544248,
   "end_elevation_m": 385.1419761966174,
   "start_xy": [
    279507.0720799986,
    257357.86016114254
   ],
   "end_xy": [
    279482.0962688458,
    257356.76068100892
   ]
  },
  "min_50m": {
   "gradient_pct": -14.204087528112268,
   "start_distance_m": 1143.0,
   "end_distance_m": 1193.0,
   "midpoint_distance_m": 1168.0,
   "start_elevation_m": 389.8738952536652,
   "end_elevation_m": 382.77185148960905,
   "start_xy": [
    279509.07014728826,
    257357.94806510097
   ],
   "end_xy": [
    279460.1717053375,
    257362.66790895115
   ]
  },
  "min_100m": {
   "gradient_pct": -8.85589502077812,
   "start_distance_m": 1145.0,
   "end_distance_m": 1245.0,
   "midpoint_distance_m": 1195.0,
   "start_elevation_m": 389.731556544248,
   "end_elevation_m": 380.8756615234699,
   "start_xy": [
    279507.0720799986,
    257357.86016114254
   ],
   "end_xy": [
    279425.4354579521,
    257399.3040897021
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 55.122342851692,
   "start_distance_m": 1015.0,
   "end_distance_m": 1017.0,
   "midpoint_distance_m": 1016.0,
   "start_elevation_m": 392.177492329932,
   "end_elevation_m": 393.27993918696586,
   "start_xy": [
    279632.43295259547,
    257334.6960482594
   ],
   "end_xy": [
    279630.43605044525,
    257334.80732180728
   ]
  },
  "max_3m": {
   "gradient_pct": 50.529021020088294,
   "start_distance_m": 1450.0,
   "end_distance_m": 1453.0,
   "midpoint_distance_m": 1451.5,
   "start_elevation_m": 399.0644038079464,
   "end_elevation_m": 400.58027443854905,
   "start_xy": [
    279289.88121132005,
    257545.697148312
   ],
   "end_xy": [
    279286.90035449463,
    257545.35878078046
   ]
  }
 },
 "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": 0.004,
   "obstruction_max_height_m": 3.41,
   "flagged_windows_m": []
  },
  "structure_suppression": {
   "masked_fraction": 0.006,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0
   ],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    720.0,
    727.0
   ],
   [
    1001.0,
    1007.0
   ]
  ],
  "review": [
   "max5_over_45",
   "short_window_divergence"
  ],
  "extent": [
   "may_start_earlier",
   "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_277257_20220114dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_22_278257_20220114dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_22_279257_20220114dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_22_280257_20220114dtm.tif"
  ],
  "calculated_at": "2026-08-13T02:09:38+00:00",
  "road_source": "wales-discovered-adopted-routes/bwlch-esgair-gelli.geojson",
  "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_277257_20220114dtm.tif",
   "wg_del_22_278257_20220114dtm.tif",
   "wg_del_22_279257_20220114dtm.tif",
   "wg_del_22_280257_20220114dtm.tif"
  ],
  "elevation_capture_dates": [
   "14-01-2022"
  ],
  "route_summit_trim_m": 1189.5,
  "route_summit_trim_loss_m": 8.9,
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 11.2% over 200 m (Terrain 50), gain 67.3 m over 2249 m way. EXTENDED by graph walk: +3 segment(s) at base, +0 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting. DEDUPE: absorbed 1 overlapping proposal(s): discovered-lane-52-2012-3-7546 ADOPTED (notable slice 2026-08-11): clean-steep."
 },
 "confidence": "U"
}