{
 "ocl_version": "0.1.0",
 "name": "Ruthin Road",
 "slug": "ruthin-road",
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 33.04080940191341,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 630.0,
   "end_distance_m": 632.0,
   "start_elevation_m": 156.60919356668668,
   "end_elevation_m": 157.27000975472495,
   "min_gradient_pct": -43.08715302857422,
   "suppressed_max_gradient_pct": 60.35803358489886,
   "suppressed_location_m": [
    496.0,
    498.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 29.38794986345954,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 629.0,
   "end_distance_m": 632.0,
   "start_elevation_m": 156.38837125882117,
   "end_elevation_m": 157.27000975472495,
   "min_gradient_pct": -36.93315195262225,
   "suppressed_max_gradient_pct": 49.85514436043464,
   "suppressed_location_m": [
    495.0,
    498.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.99091633257126,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 627.0,
   "end_distance_m": 632.0,
   "start_elevation_m": 156.1704639380964,
   "end_elevation_m": 157.27000975472495,
   "min_gradient_pct": -21.74990016526408,
   "suppressed_max_gradient_pct": 35.14907791184896,
   "suppressed_location_m": [
    494.0,
    499.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 14.478029213219088,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 604.0,
   "end_distance_m": 614.0,
   "start_elevation_m": 153.9909051662226,
   "end_elevation_m": 155.4387080875445,
   "min_gradient_pct": -7.69552809962903,
   "suppressed_max_gradient_pct": 20.66352665664965,
   "suppressed_location_m": [
    489.0,
    499.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 12.5512891900172,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 594.0,
   "end_distance_m": 614.0,
   "start_elevation_m": 152.92845024954107,
   "end_elevation_m": 155.4387080875445,
   "min_gradient_pct": -3.8217853619691766
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 11.346894533501086,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 594.0,
   "end_distance_m": 619.0,
   "start_elevation_m": 152.92845024954107,
   "end_elevation_m": 155.76517388291634,
   "min_gradient_pct": -3.780035777985404
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 10.139455643527526,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 581.0,
   "end_distance_m": 631.0,
   "start_elevation_m": 151.97110672248084,
   "end_elevation_m": 157.0408345442446,
   "min_gradient_pct": -3.4957510259212086
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 9.018446125460258,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 532.0,
   "end_distance_m": 632.0,
   "start_elevation_m": 148.2515636292647,
   "end_elevation_m": 157.27000975472495,
   "min_gradient_pct": -3.298994371805236
  }
 ],
 "shape": {
  "ascent_concentration": 0.337,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 16.0,
  "shape_class": "sustained"
 },
 "length_m": 2228.3106031387274,
 "start_elevation_m": 126.73519996643144,
 "end_elevation_m": 237.63907003784246,
 "endpoint_gain_m": 110.90387007141102,
 "overall_gradient_pct": 4.977038206217543,
 "accumulated_ascent_m": 119.6059923199444,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.99091633257126,
   "start_distance_m": 627.0,
   "end_distance_m": 632.0,
   "midpoint_distance_m": 629.5,
   "start_elevation_m": 156.1704639380964,
   "end_elevation_m": 157.27000975472495,
   "start_xy": [
    322462.4469029005,
    362978.94962973427
   ],
   "end_xy": [
    322458.31166268,
    362976.1389735264
   ]
  },
  "max_10m": {
   "gradient_pct": 14.478029213219088,
   "start_distance_m": 604.0,
   "end_distance_m": 614.0,
   "midpoint_distance_m": 609.0,
   "start_elevation_m": 153.9909051662226,
   "end_elevation_m": 155.4387080875445,
   "start_xy": [
    322481.4690079148,
    362991.8786482904
   ],
   "end_xy": [
    322473.19852747384,
    362986.2573358747
   ]
  },
  "max_20m": {
   "gradient_pct": 12.5512891900172,
   "start_distance_m": 594.0,
   "end_distance_m": 614.0,
   "midpoint_distance_m": 604.0,
   "start_elevation_m": 152.92845024954107,
   "end_elevation_m": 155.4387080875445,
   "start_xy": [
    322489.7394883558,
    362997.4999607061
   ],
   "end_xy": [
    322473.19852747384,
    362986.2573358747
   ]
  },
  "max_25m": {
   "gradient_pct": 11.346894533501086,
   "start_distance_m": 594.0,
   "end_distance_m": 619.0,
   "midpoint_distance_m": 606.5,
   "start_elevation_m": 152.92845024954107,
   "end_elevation_m": 155.76517388291634,
   "start_xy": [
    322489.7394883558,
    362997.4999607061
   ],
   "end_xy": [
    322469.0632872533,
    362983.4466796668
   ]
  },
  "max_50m": {
   "gradient_pct": 10.139455643527526,
   "start_distance_m": 581.0,
   "end_distance_m": 631.0,
   "midpoint_distance_m": 606.0,
   "start_elevation_m": 151.97110672248084,
   "end_elevation_m": 157.0408345442446,
   "start_xy": [
    322500.4911129291,
    363004.80766684655
   ],
   "end_xy": [
    322459.13871072413,
    362976.70110476797
   ]
  },
  "max_100m": {
   "gradient_pct": 9.018446125460258,
   "start_distance_m": 532.0,
   "end_distance_m": 632.0,
   "midpoint_distance_m": 582.0,
   "start_elevation_m": 148.2515636292647,
   "end_elevation_m": 157.27000975472495,
   "start_xy": [
    322541.01646709006,
    363032.35209768347
   ],
   "end_xy": [
    322458.31166268,
    362976.1389735264
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -21.74990016526408,
   "start_distance_m": 499.0,
   "end_distance_m": 504.0,
   "midpoint_distance_m": 501.5,
   "start_elevation_m": 147.2327589444894,
   "end_elevation_m": 146.1452639362262,
   "start_xy": [
    322568.30905254534,
    363050.9024286553
   ],
   "end_xy": [
    322564.1738123249,
    363048.09177244746
   ]
  },
  "min_10m": {
   "gradient_pct": -7.69552809962903,
   "start_distance_m": 499.0,
   "end_distance_m": 509.0,
   "midpoint_distance_m": 504.0,
   "start_elevation_m": 147.2327589444894,
   "end_elevation_m": 146.4632061345265,
   "start_xy": [
    322568.30905254534,
    363050.9024286553
   ],
   "end_xy": [
    322560.03857210436,
    363045.2811162396
   ]
  },
  "min_20m": {
   "gradient_pct": -3.8217853619691766,
   "start_distance_m": 2152.0,
   "end_distance_m": 2172.0,
   "midpoint_distance_m": 2162.0,
   "start_elevation_m": 240.2176294274377,
   "end_elevation_m": 239.45327235504388,
   "start_xy": [
    321150.3248130497,
    362495.8168465033
   ],
   "end_xy": [
    321133.26235947205,
    362506.24185950874
   ]
  },
  "min_25m": {
   "gradient_pct": -3.780035777985404,
   "start_distance_m": 2147.0,
   "end_distance_m": 2172.0,
   "midpoint_distance_m": 2159.5,
   "start_elevation_m": 240.39828129954023,
   "end_elevation_m": 239.45327235504388,
   "start_xy": [
    321154.538243156,
    362493.1248199916
   ],
   "end_xy": [
    321133.26235947205,
    362506.24185950874
   ]
  },
  "min_50m": {
   "gradient_pct": -3.4957510259212086,
   "start_distance_m": 2138.0,
   "end_distance_m": 2188.0,
   "midpoint_distance_m": 2163.0,
   "start_elevation_m": 240.70328684157226,
   "end_elevation_m": 238.95541132861166,
   "start_xy": [
    321162.1224173473,
    362488.27917227056
   ],
   "end_xy": [
    321119.41383201926,
    362514.2554908572
   ]
  },
  "min_100m": {
   "gradient_pct": -3.298994371805236,
   "start_distance_m": 2128.0,
   "end_distance_m": 2228.0,
   "midpoint_distance_m": 2178.0,
   "start_elevation_m": 240.94679200946624,
   "end_elevation_m": 237.647797637661,
   "start_xy": [
    321170.5492775598,
    362482.8951192472
   ],
   "end_xy": [
    321083.3537706208,
    362531.28813805396
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 33.04080940191341,
   "start_distance_m": 630.0,
   "end_distance_m": 632.0,
   "midpoint_distance_m": 631.0,
   "start_elevation_m": 156.60919356668668,
   "end_elevation_m": 157.27000975472495,
   "start_xy": [
    322459.96575876826,
    362977.2632360096
   ],
   "end_xy": [
    322458.31166268,
    362976.1389735264
   ]
  },
  "max_3m": {
   "gradient_pct": 29.38794986345954,
   "start_distance_m": 629.0,
   "end_distance_m": 632.0,
   "midpoint_distance_m": 630.5,
   "start_elevation_m": 156.38837125882117,
   "end_elevation_m": 157.27000975472495,
   "start_xy": [
    322460.79280681233,
    362977.8253672511
   ],
   "end_xy": [
    322458.31166268,
    362976.1389735264
   ]
  }
 },
 "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": 0.013,
   "obstruction_max_height_m": 16.14,
   "flagged_windows_m": []
  },
  "structure_suppression": {
   "masked_fraction": 0.003,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    495.0,
    500.0
   ]
  ],
  "review": [],
  "extent": [
   "descends_at_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_27_321362_20210211dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_27_321363_20210211dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_7_322362_20210211dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_7_322363_20210211dtm.tif"
  ],
  "calculated_at": "2026-08-12T23:12:22+00:00",
  "road_source": "trunk-adopted-routes/ruthin-road.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_27_321362_20210211dtm.tif",
   "wg_del_27_321363_20210211dtm.tif",
   "wg_del_7_322362_20210211dtm.tif",
   "wg_del_7_322363_20210211dtm.tif"
  ],
  "elevation_capture_dates": [
   "11-02-2021"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 8.5% over 200 m (Terrain 50), gain 63.0 m over 1284 m way. EXTENDED by graph walk: +7 segment(s) at base, +0 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting. ADOPTED (trunk sweep, Peter's on-sight verdict 2026-08-12): clean table, adopt-all."
 },
 "area": {
  "place": "Gwernymynydd",
  "county": "Sir y Fflint - Flintshire"
 },
 "reported_claims": [],
 "confidence": "B"
}