{
 "ocl_version": "0.1.0",
 "name": "Ringley Old Brow",
 "slug": "ringley-old-brow",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 27.844230049208818,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 47.0,
   "end_distance_m": 49.0,
   "start_elevation_m": 63.756506584808946,
   "end_elevation_m": 64.31339118579312,
   "min_gradient_pct": -2.167299796319355,
   "suppressed_max_gradient_pct": 56.274580827545506,
   "suppressed_location_m": [
    33.0,
    35.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.936131942171773,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 47.0,
   "end_distance_m": 50.0,
   "start_elevation_m": 63.756506584808946,
   "end_elevation_m": 64.4445905430741,
   "min_gradient_pct": 1.2100961065006761,
   "suppressed_max_gradient_pct": 48.82780845255681,
   "suppressed_location_m": [
    33.0,
    36.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.01072862043759,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 45.0,
   "end_distance_m": 50.0,
   "start_elevation_m": 63.34405411205222,
   "end_elevation_m": 64.4445905430741,
   "min_gradient_pct": 1.636819046447897,
   "suppressed_max_gradient_pct": 39.5159147645802,
   "suppressed_location_m": [
    31.0,
    36.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 17.117801568708586,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 89.0,
   "end_distance_m": 99.0,
   "start_elevation_m": 70.10965727540749,
   "end_elevation_m": 71.82143743227834,
   "min_gradient_pct": 3.4553112057997737,
   "suppressed_max_gradient_pct": 33.86601397251411,
   "suppressed_location_m": [
    26.0,
    36.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 16.47346681625031,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 78.0,
   "end_distance_m": 98.0,
   "start_elevation_m": 68.36286962602254,
   "end_elevation_m": 71.6575629892726,
   "min_gradient_pct": 5.232212806760543,
   "suppressed_max_gradient_pct": 27.19742035365517,
   "suppressed_location_m": [
    16.0,
    36.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 16.606023927048625,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 73.0,
   "end_distance_m": 98.0,
   "start_elevation_m": 67.50605700751045,
   "end_elevation_m": 71.6575629892726,
   "min_gradient_pct": 5.389519156656149,
   "suppressed_max_gradient_pct": 26.406413143252706,
   "suppressed_location_m": [
    11.0,
    36.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 15.527900653064293,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 48.0,
   "end_distance_m": 98.0,
   "start_elevation_m": 63.89361266274046,
   "end_elevation_m": 71.6575629892726,
   "min_gradient_pct": 6.631472368105676,
   "suppressed_max_gradient_pct": 20.529731815298675,
   "suppressed_location_m": [
    6.0,
    56.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 11.784214040315035,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 38.0,
   "end_distance_m": 138.0,
   "start_elevation_m": 62.664316117716,
   "end_elevation_m": 74.44853015803103,
   "min_gradient_pct": 7.536221685593091,
   "suppressed_max_gradient_pct": 17.728400323529286,
   "suppressed_location_m": [
    3.0,
    103.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.419,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 108.0,
  "shape_class": "sustained"
 },
 "length_m": 299.1191480748901,
 "start_elevation_m": 54.33869927728112,
 "end_elevation_m": 87.47440164672813,
 "endpoint_gain_m": 33.135702369447,
 "overall_gradient_pct": 11.077760344901375,
 "accumulated_ascent_m": 33.37005339274679,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.01072862043759,
   "start_distance_m": 45.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 47.5,
   "start_elevation_m": 63.34405411205222,
   "end_elevation_m": 64.4445905430741,
   "start_xy": [
    376384.2262882916,
    405439.52423100284
   ],
   "end_xy": [
    376388.1276053618,
    405442.65148584166
   ]
  },
  "max_10m": {
   "gradient_pct": 17.117801568708586,
   "start_distance_m": 89.0,
   "end_distance_m": 99.0,
   "midpoint_distance_m": 94.0,
   "start_elevation_m": 70.10965727540749,
   "end_elevation_m": 71.82143743227834,
   "start_xy": [
    376418.55620090204,
    405467.0461609792
   ],
   "end_xy": [
    376426.35923854285,
    405473.3001648325
   ]
  },
  "max_20m": {
   "gradient_pct": 16.47346681625031,
   "start_distance_m": 78.0,
   "end_distance_m": 98.0,
   "midpoint_distance_m": 88.0,
   "start_elevation_m": 68.36286962602254,
   "end_elevation_m": 71.6575629892726,
   "start_xy": [
    376409.9741621815,
    405460.165130161
   ],
   "end_xy": [
    376425.57845511904,
    405472.6753642118
   ]
  },
  "max_25m": {
   "gradient_pct": 16.606023927048625,
   "start_distance_m": 73.0,
   "end_distance_m": 98.0,
   "midpoint_distance_m": 85.5,
   "start_elevation_m": 67.50605700751045,
   "end_elevation_m": 71.6575629892726,
   "start_xy": [
    376406.0724545884,
    405457.0383637871
   ],
   "end_xy": [
    376425.57845511904,
    405472.6753642118
   ]
  },
  "max_50m": {
   "gradient_pct": 15.527900653064293,
   "start_distance_m": 48.0,
   "end_distance_m": 98.0,
   "midpoint_distance_m": 73.0,
   "start_elevation_m": 63.89361266274046,
   "end_elevation_m": 71.6575629892726,
   "start_xy": [
    376386.56733268924,
    405441.4002670045
   ],
   "end_xy": [
    376425.57845511904,
    405472.6753642118
   ]
  },
  "max_100m": {
   "gradient_pct": 11.784214040315035,
   "start_distance_m": 38.0,
   "end_distance_m": 138.0,
   "midpoint_distance_m": 88.0,
   "start_elevation_m": 62.664316117716,
   "end_elevation_m": 74.44853015803103,
   "start_xy": [
    376378.76518647664,
    405435.1451496595
   ],
   "end_xy": [
    376459.95887034584,
    405493.09551030706
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 1.636819046447897,
   "start_distance_m": 133.0,
   "end_distance_m": 138.0,
   "midpoint_distance_m": 135.5,
   "start_elevation_m": 74.36668920570864,
   "end_elevation_m": 74.44853015803103,
   "start_xy": [
    376455.6459380865,
    405490.5659636267
   ],
   "end_xy": [
    376459.95887034584,
    405493.09551030706
   ]
  },
  "min_10m": {
   "gradient_pct": 3.4553112057997737,
   "start_distance_m": 129.0,
   "end_distance_m": 139.0,
   "midpoint_distance_m": 134.0,
   "start_elevation_m": 74.13750777682655,
   "end_elevation_m": 74.48303889740653,
   "start_xy": [
    376452.1958390583,
    405488.5419056356
   ],
   "end_xy": [
    376460.8215230426,
    405493.60130702966
   ]
  },
  "min_20m": {
   "gradient_pct": 5.232212806760543,
   "start_distance_m": 121.0,
   "end_distance_m": 141.0,
   "midpoint_distance_m": 131.0,
   "start_elevation_m": 73.57682853865236,
   "end_elevation_m": 74.62327110000447,
   "start_xy": [
    376445.2958210909,
    405484.493482379
   ],
   "end_xy": [
    376462.5465727915,
    405494.61333623267
   ]
  },
  "min_25m": {
   "gradient_pct": 5.389519156656149,
   "start_distance_m": 114.0,
   "end_distance_m": 139.0,
   "midpoint_distance_m": 126.5,
   "start_elevation_m": 73.13565910824249,
   "end_elevation_m": 74.48303889740653,
   "start_xy": [
    376439.25783913914,
    405480.9519057921
   ],
   "end_xy": [
    376460.8215230426,
    405493.60130702966
   ]
  },
  "min_50m": {
   "gradient_pct": 6.631472368105676,
   "start_distance_m": 103.0,
   "end_distance_m": 153.0,
   "midpoint_distance_m": 128.0,
   "start_elevation_m": 72.31065968989219,
   "end_elevation_m": 75.62639587394503,
   "start_xy": [
    376429.76968224696,
    405475.3864008102
   ],
   "end_xy": [
    376472.8971258078,
    405500.6850737041
   ]
  },
  "min_100m": {
   "gradient_pct": 7.536221685593091,
   "start_distance_m": 102.0,
   "end_distance_m": 202.0,
   "midpoint_distance_m": 152.0,
   "start_elevation_m": 72.21010619244989,
   "end_elevation_m": 79.74632787804298,
   "start_xy": [
    376428.9068493745,
    405474.88091150974
   ],
   "end_xy": [
    376515.161917023,
    405525.47795125225
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 27.844230049208818,
   "start_distance_m": 47.0,
   "end_distance_m": 49.0,
   "midpoint_distance_m": 48.0,
   "start_elevation_m": 63.756506584808946,
   "end_elevation_m": 64.31339118579312,
   "start_xy": [
    376385.78695237514,
    405440.774961827
   ],
   "end_xy": [
    376387.34722521243,
    405442.02618045866
   ]
  },
  "max_3m": {
   "gradient_pct": 22.936131942171773,
   "start_distance_m": 47.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 48.5,
   "start_elevation_m": 63.756506584808946,
   "end_elevation_m": 64.4445905430741,
   "start_xy": [
    376385.78695237514,
    405440.774961827
   ],
   "end_xy": [
    376388.1276053618,
    405442.65148584166
   ]
  }
 },
 "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": 0.02,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.113,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 5.0,
     "end_m": 30.0,
     "raw_pct": 21.72,
     "reason": "mask-edge"
    },
    {
     "window_m": 20.0,
     "start_m": 10.0,
     "end_m": 30.0,
     "raw_pct": 22.67,
     "reason": "mask-edge"
    },
    {
     "window_m": 10.0,
     "start_m": 20.0,
     "end_m": 30.0,
     "raw_pct": 23.14,
     "reason": "mask-edge"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.037,
   "obstruction_max_height_m": 5.8,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    3.0,
    36.0
   ]
  ],
  "review": [],
  "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/england/bulk_dtm_1m/SD7505.tif"
  ],
  "calculated_at": "2026-09-12T01:40:57+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/texture-uk-england/batch-england-rchunk04.pbf",
  "osm_snapshot": "",
  "run_id": "texture-uk-england-260912",
  "elevation_provider": "Environment Agency",
  "elevation_dataset": "EA LIDAR Composite DTM 1m (2022)",
  "elevation_licence": "Open Government Licence v3 \u2014 \u00a9 Environment Agency",
  "elevation_coverage_id": "13787b9a-26a4-4775-8523-806d13af58fc__Lidar_Composite_Elevation_DTM_1m",
  "elevation_tile_ids": [
   "SD7505.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Kearsley",
  "county": ""
 }
}