{
 "ocl_version": "0.1.0",
 "name": "Tywardreath Hill",
 "slug": "tywardreath-hill",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 39.44665916441341,
   "diagnostic": true,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 151.0,
   "end_distance_m": 153.0,
   "start_elevation_m": 19.547551715339083,
   "end_elevation_m": 20.33648489862735,
   "min_gradient_pct": -19.70395821822155,
   "suppressed_max_gradient_pct": 43.207902591610114,
   "suppressed_location_m": [
    179.0,
    181.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 35.91007469418237,
   "diagnostic": true,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 150.0,
   "end_distance_m": 153.0,
   "start_elevation_m": 19.25918265780188,
   "end_elevation_m": 20.33648489862735,
   "min_gradient_pct": -17.44545432871618,
   "suppressed_max_gradient_pct": 43.20297157780205,
   "suppressed_location_m": [
    178.0,
    181.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 28.900946490801296,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 119.0,
   "end_distance_m": 124.0,
   "start_elevation_m": 15.516522585879253,
   "end_elevation_m": 16.961569910419318,
   "min_gradient_pct": -10.236020015432246,
   "suppressed_max_gradient_pct": 41.57614247096667,
   "suppressed_location_m": [
    176.0,
    181.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.026326773076615,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 116.0,
   "end_distance_m": 126.0,
   "start_elevation_m": 15.059005782880048,
   "end_elevation_m": 17.36163846018771,
   "min_gradient_pct": -2.7816577517938867,
   "suppressed_max_gradient_pct": 34.06716736683865,
   "suppressed_location_m": [
    173.0,
    183.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 17.93359116436557,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 112.0,
   "end_distance_m": 132.0,
   "start_elevation_m": 14.68862256948535,
   "end_elevation_m": 18.275340802358464,
   "min_gradient_pct": 0.4684283045276061,
   "suppressed_max_gradient_pct": 23.93481381973693,
   "suppressed_location_m": [
    165.0,
    185.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 16.69020564339398,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 106.0,
   "end_distance_m": 131.0,
   "start_elevation_m": 14.003812878320847,
   "end_elevation_m": 18.176364289169342,
   "min_gradient_pct": 0.5641994486129533,
   "suppressed_max_gradient_pct": 21.09481839212674,
   "suppressed_location_m": [
    164.0,
    189.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 14.262921818631082,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 82.0,
   "end_distance_m": 132.0,
   "start_elevation_m": 11.143879893042923,
   "end_elevation_m": 18.275340802358464,
   "min_gradient_pct": 0.8464463212017819,
   "suppressed_max_gradient_pct": 16.81609145865084,
   "suppressed_location_m": [
    138.0,
    188.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 12.175950803587481,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 56.0,
   "end_distance_m": 156.0,
   "start_elevation_m": 8.674190848896346,
   "end_elevation_m": 20.850141652483828,
   "min_gradient_pct": 2.3901229551955794,
   "suppressed_max_gradient_pct": 14.82029630332852,
   "suppressed_location_m": [
    87.0,
    187.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.381,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 54.0,
  "shape_class": "sustained"
 },
 "length_m": 513.9533419986624,
 "start_elevation_m": 4.629452306724429,
 "end_elevation_m": 52.21297395251359,
 "endpoint_gain_m": 47.58352164578916,
 "overall_gradient_pct": 9.258334902687139,
 "accumulated_ascent_m": 49.72102374870188,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 28.900946490801296,
   "start_distance_m": 119.0,
   "end_distance_m": 124.0,
   "midpoint_distance_m": 121.5,
   "start_elevation_m": 15.516522585879253,
   "end_elevation_m": 16.961569910419318,
   "start_xy": [
    208645.3642145047,
    53632.786597708146
   ],
   "end_xy": [
    208643.15819587588,
    53637.27363189899
   ]
  },
  "max_10m": {
   "gradient_pct": 23.026326773076615,
   "start_distance_m": 116.0,
   "end_distance_m": 126.0,
   "midpoint_distance_m": 121.0,
   "start_elevation_m": 15.059005782880048,
   "end_elevation_m": 17.36163846018771,
   "start_xy": [
    208646.68902946103,
    53630.09496962317
   ],
   "end_xy": [
    208642.27499149795,
    53639.068053593786
   ]
  },
  "max_20m": {
   "gradient_pct": 17.93359116436557,
   "start_distance_m": 112.0,
   "end_distance_m": 132.0,
   "midpoint_distance_m": 122.0,
   "start_elevation_m": 14.68862256948535,
   "end_elevation_m": 18.275340802358464,
   "start_xy": [
    208648.4542435812,
    53626.50553856613
   ],
   "end_xy": [
    208639.6269655878,
    53644.45209924828
   ]
  },
  "max_25m": {
   "gradient_pct": 16.69020564339398,
   "start_distance_m": 106.0,
   "end_distance_m": 131.0,
   "midpoint_distance_m": 118.5,
   "start_elevation_m": 14.003812878320847,
   "end_elevation_m": 18.176364289169342,
   "start_xy": [
    208651.43513040332,
    53621.30441662786
   ],
   "end_xy": [
    208640.06816826417,
    53643.554691761965
   ]
  },
  "max_50m": {
   "gradient_pct": 14.262921818631082,
   "start_distance_m": 82.0,
   "end_distance_m": 132.0,
   "midpoint_distance_m": 107.0,
   "start_elevation_m": 11.143879893042923,
   "end_elevation_m": 18.275340802358464,
   "start_xy": [
    208663.99823187364,
    53600.85525132633
   ],
   "end_xy": [
    208639.6269655878,
    53644.45209924828
   ]
  },
  "max_100m": {
   "gradient_pct": 12.175950803587481,
   "start_distance_m": 56.0,
   "end_distance_m": 156.0,
   "midpoint_distance_m": 106.0,
   "start_elevation_m": 8.674190848896346,
   "end_elevation_m": 20.850141652483828,
   "start_xy": [
    208677.60790719537,
    53578.701776850256
   ],
   "end_xy": [
    208629.03527079662,
    53665.98848320958
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -10.236020015432246,
   "start_distance_m": 223.0,
   "end_distance_m": 228.0,
   "midpoint_distance_m": 225.5,
   "start_elevation_m": 30.910498314388718,
   "end_elevation_m": 30.398697313617106,
   "start_xy": [
    208600.17715421153,
    53726.445876786136
   ],
   "end_xy": [
    208598.12125651792,
    53731.00364796154
   ]
  },
  "min_10m": {
   "gradient_pct": -2.7816577517938867,
   "start_distance_m": 223.0,
   "end_distance_m": 233.0,
   "midpoint_distance_m": 228.0,
   "start_elevation_m": 30.910498314388718,
   "end_elevation_m": 30.63233253920933,
   "start_xy": [
    208600.17715421153,
    53726.445876786136
   ],
   "end_xy": [
    208596.06498563115,
    53735.56125086222
   ]
  },
  "min_20m": {
   "gradient_pct": 0.4684283045276061,
   "start_distance_m": 474.0,
   "end_distance_m": 494.0,
   "midpoint_distance_m": 484.0,
   "start_elevation_m": 50.98736065063072,
   "end_elevation_m": 51.08104631153624,
   "start_xy": [
    208548.6025130065,
    53965.43092087517
   ],
   "end_xy": [
    208552.0554555006,
    53985.13059345729
   ]
  },
  "min_25m": {
   "gradient_pct": 0.5641994486129533,
   "start_distance_m": 469.0,
   "end_distance_m": 494.0,
   "midpoint_distance_m": 481.5,
   "start_elevation_m": 50.939996449383,
   "end_elevation_m": 51.08104631153624,
   "start_xy": [
    208547.73951992285,
    53960.5059602544
   ],
   "end_xy": [
    208552.0554555006,
    53985.13059345729
   ]
  },
  "min_50m": {
   "gradient_pct": 0.8464463212017819,
   "start_distance_m": 445.0,
   "end_distance_m": 495.0,
   "midpoint_distance_m": 470.0,
   "start_elevation_m": 50.69690965966949,
   "end_elevation_m": 51.12013282027038,
   "start_xy": [
    208543.169505101,
    53936.94651268511
   ],
   "end_xy": [
    208552.22843970105,
    53986.11551805538
   ]
  },
  "min_100m": {
   "gradient_pct": 2.3901229551955794,
   "start_distance_m": 401.0,
   "end_distance_m": 501.0,
   "midpoint_distance_m": 451.0,
   "start_elevation_m": 48.858414475257405,
   "end_elevation_m": 51.248537430452984,
   "start_xy": [
    208540.82863211483,
    53893.17976471271
   ],
   "end_xy": [
    208553.42371557385,
    53991.994316735596
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 39.44665916441341,
   "start_distance_m": 151.0,
   "end_distance_m": 153.0,
   "midpoint_distance_m": 152.0,
   "start_elevation_m": 19.547551715339083,
   "end_elevation_m": 20.33648489862735,
   "start_xy": [
    208631.24128796064,
    53661.501448297764
   ],
   "end_xy": [
    208630.35928235675,
    53663.296459696125
   ]
  },
  "max_3m": {
   "gradient_pct": 35.91007469418237,
   "start_distance_m": 150.0,
   "end_distance_m": 153.0,
   "midpoint_distance_m": 151.5,
   "start_elevation_m": 19.25918265780188,
   "end_elevation_m": 20.33648489862735,
   "start_xy": [
    208631.68329262832,
    53660.60443554844
   ],
   "end_xy": [
    208630.35928235675,
    53663.296459696125
   ]
  }
 },
 "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": {
  "texture_suppression": {
   "masked_fraction": 0.136,
   "windows_resited": [
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 2,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 164.0,
     "end_m": 189.0,
     "raw_pct": 21.09,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 165.0,
     "end_m": 185.0,
     "raw_pct": 23.93,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 173.0,
     "end_m": 183.0,
     "raw_pct": 34.07,
     "reason": "hump+short-step"
    },
    {
     "window_m": 5.0,
     "start_m": 176.0,
     "end_m": 181.0,
     "raw_pct": 41.58,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 203.0,
     "end_m": 223.0,
     "raw_pct": 21.02,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 250.0,
     "end_m": 260.0,
     "raw_pct": 25.14,
     "reason": "hump"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.47,
   "obstruction_max_height_m": 9.2,
   "flagged_windows_m": [
    5,
    10,
    20,
    25,
    50
   ]
  },
  "excluded_ranges_m": [
   [
    162.0,
    191.0
   ],
   [
    201.0,
    225.0
   ],
   [
    248.0,
    262.0
   ]
  ],
  "review": [],
  "extent": []
 },
 "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/SX0550.tif"
  ],
  "calculated_at": "2026-09-12T01:38:06+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/texture-uk-england/batch-england-rchunk00.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": [
   "SX0550.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Par",
  "county": "Cornwall"
 }
}