{
 "ocl_version": "0.1.0",
 "name": "Timewell Hill",
 "slug": "timewell-hill",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 46.327463391978085,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 505.0,
   "end_distance_m": 507.0,
   "start_elevation_m": 215.10885553024303,
   "end_elevation_m": 216.0354047980826,
   "min_gradient_pct": -30.277499832429555
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 39.93637935895625,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 504.0,
   "end_distance_m": 507.0,
   "start_elevation_m": 214.8373134173139,
   "end_elevation_m": 216.0354047980826,
   "min_gradient_pct": -20.92913995353077
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 33.103490994034814,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 512.0,
   "end_distance_m": 517.0,
   "start_elevation_m": 216.63851640840826,
   "end_elevation_m": 218.29369095811,
   "min_gradient_pct": -8.585791573567576
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 27.241094057878854,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 497.0,
   "end_distance_m": 507.0,
   "start_elevation_m": 213.3112953922947,
   "end_elevation_m": 216.0354047980826,
   "min_gradient_pct": 1.2994032325502758
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.911977829076477,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 497.0,
   "end_distance_m": 517.0,
   "start_elevation_m": 213.3112953922947,
   "end_elevation_m": 218.29369095811,
   "min_gradient_pct": 1.5033583265540074
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.57856298511524,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 492.0,
   "end_distance_m": 517.0,
   "start_elevation_m": 212.3990502118312,
   "end_elevation_m": 218.29369095811,
   "min_gradient_pct": 1.5553593815213844
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.76336576552484,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 467.0,
   "end_distance_m": 517.0,
   "start_elevation_m": 208.4120080753476,
   "end_elevation_m": 218.29369095811,
   "min_gradient_pct": 2.0073180415545266
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.58040788383778,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 417.0,
   "end_distance_m": 517.0,
   "start_elevation_m": 201.71328307427223,
   "end_elevation_m": 218.29369095811,
   "min_gradient_pct": 2.6663368082350303
  }
 ],
 "shape": {
  "ascent_concentration": 0.385,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 254.0,
  "shape_class": "sustained"
 },
 "length_m": 1057.705732694373,
 "start_elevation_m": 169.31329287236022,
 "end_elevation_m": 266.10051614843746,
 "endpoint_gain_m": 96.78722327607724,
 "overall_gradient_pct": 9.150675871778052,
 "accumulated_ascent_m": 97.43365633074484,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 33.103490994034814,
   "start_distance_m": 512.0,
   "end_distance_m": 517.0,
   "midpoint_distance_m": 514.5,
   "start_elevation_m": 216.63851640840826,
   "end_elevation_m": 218.29369095811,
   "start_xy": [
    296106.10319067,
    125940.57408090908
   ],
   "end_xy": [
    296108.7610706693,
    125944.8091339087
   ]
  },
  "max_10m": {
   "gradient_pct": 27.241094057878854,
   "start_distance_m": 497.0,
   "end_distance_m": 507.0,
   "midpoint_distance_m": 502.0,
   "start_elevation_m": 213.3112953922947,
   "end_elevation_m": 216.0354047980826,
   "start_xy": [
    296098.12955067225,
    125927.86892191022
   ],
   "end_xy": [
    296103.44531067077,
    125936.33902790946
   ]
  },
  "max_20m": {
   "gradient_pct": 24.911977829076477,
   "start_distance_m": 497.0,
   "end_distance_m": 517.0,
   "midpoint_distance_m": 507.0,
   "start_elevation_m": 213.3112953922947,
   "end_elevation_m": 218.29369095811,
   "start_xy": [
    296098.12955067225,
    125927.86892191022
   ],
   "end_xy": [
    296108.7610706693,
    125944.8091339087
   ]
  },
  "max_25m": {
   "gradient_pct": 23.57856298511524,
   "start_distance_m": 492.0,
   "end_distance_m": 517.0,
   "midpoint_distance_m": 504.5,
   "start_elevation_m": 212.3990502118312,
   "end_elevation_m": 218.29369095811,
   "start_xy": [
    296095.47167067305,
    125923.6338689106
   ],
   "end_xy": [
    296108.7610706693,
    125944.8091339087
   ]
  },
  "max_50m": {
   "gradient_pct": 19.76336576552484,
   "start_distance_m": 467.0,
   "end_distance_m": 517.0,
   "midpoint_distance_m": 492.0,
   "start_elevation_m": 208.4120080753476,
   "end_elevation_m": 218.29369095811,
   "start_xy": [
    296082.71860074566,
    125902.13525348813
   ],
   "end_xy": [
    296108.7610706693,
    125944.8091339087
   ]
  },
  "max_100m": {
   "gradient_pct": 16.58040788383778,
   "start_distance_m": 417.0,
   "end_distance_m": 517.0,
   "midpoint_distance_m": 467.0,
   "start_elevation_m": 201.71328307427223,
   "end_elevation_m": 218.29369095811,
   "start_xy": [
    296057.97315901634,
    125858.68879285277
   ],
   "end_xy": [
    296108.7610706693,
    125944.8091339087
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -8.585791573567576,
   "start_distance_m": 517.0,
   "end_distance_m": 522.0,
   "midpoint_distance_m": 519.5,
   "start_elevation_m": 218.29369095811,
   "end_elevation_m": 217.86440137943163,
   "start_xy": [
    296108.7610706693,
    125944.8091339087
   ],
   "end_xy": [
    296111.41895066854,
    125949.04418690832
   ]
  },
  "min_10m": {
   "gradient_pct": 1.2994032325502758,
   "start_distance_m": 1022.0,
   "end_distance_m": 1032.0,
   "midpoint_distance_m": 1027.0,
   "start_elevation_m": 265.4559138795511,
   "end_elevation_m": 265.5858542028061,
   "start_xy": [
    296290.24888452946,
    126405.68967251317
   ],
   "end_xy": [
    296295.8735038707,
    126413.95790432331
   ]
  },
  "min_20m": {
   "gradient_pct": 1.5033583265540074,
   "start_distance_m": 1019.0,
   "end_distance_m": 1039.0,
   "midpoint_distance_m": 1029.0,
   "start_elevation_m": 265.40354724445984,
   "end_elevation_m": 265.70421890977065,
   "start_xy": [
    296288.5614987271,
    126403.20920297012
   ],
   "end_xy": [
    296299.81073740957,
    126419.74566659042
   ]
  },
  "min_25m": {
   "gradient_pct": 1.5553593815213844,
   "start_distance_m": 1023.0,
   "end_distance_m": 1048.0,
   "midpoint_distance_m": 1035.5,
   "start_elevation_m": 265.47260585382304,
   "end_elevation_m": 265.8614456992034,
   "start_xy": [
    296290.8113464636,
    126406.51649569419
   ],
   "end_xy": [
    296304.8728948166,
    126427.18707521955
   ]
  },
  "min_50m": {
   "gradient_pct": 2.0073180415545266,
   "start_distance_m": 1007.0,
   "end_distance_m": 1057.0,
   "midpoint_distance_m": 1032.0,
   "start_elevation_m": 265.0853212643593,
   "end_elevation_m": 266.0889802851366,
   "start_xy": [
    296281.8119555176,
    126393.28732479794
   ],
   "end_xy": [
    296309.93505222374,
    126434.62848384869
   ]
  },
  "min_100m": {
   "gradient_pct": 2.6663368082350303,
   "start_distance_m": 957.0,
   "end_distance_m": 1057.0,
   "midpoint_distance_m": 1007.0,
   "start_elevation_m": 263.42264347690156,
   "end_elevation_m": 266.0889802851366,
   "start_xy": [
    296258.3791601142,
    126349.42987558992
   ],
   "end_xy": [
    296309.93505222374,
    126434.62848384869
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 46.327463391978085,
   "start_distance_m": 505.0,
   "end_distance_m": 507.0,
   "midpoint_distance_m": 506.0,
   "start_elevation_m": 215.10885553024303,
   "end_elevation_m": 216.0354047980826,
   "start_xy": [
    296102.3821586711,
    125934.64500670962
   ],
   "end_xy": [
    296103.44531067077,
    125936.33902790946
   ]
  },
  "max_3m": {
   "gradient_pct": 39.93637935895625,
   "start_distance_m": 504.0,
   "end_distance_m": 507.0,
   "midpoint_distance_m": 505.5,
   "start_elevation_m": 214.8373134173139,
   "end_elevation_m": 216.0354047980826,
   "start_xy": [
    296101.85058267124,
    125933.79799610969
   ],
   "end_xy": [
    296103.44531067077,
    125936.33902790946
   ]
  }
 },
 "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": 0.095,
   "obstruction_max_height_m": 19.12,
   "flagged_windows_m": [
    10,
    20,
    25,
    50,
    100
   ]
  },
  "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/SS9525.tif"
  ],
  "calculated_at": "2026-09-05T02:15:02+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "/mnt/HC_Volume_106792346/hunt-gb/regions/region-04.osm.pbf",
  "osm_snapshot": "",
  "run_id": "hunt-england-260905",
  "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": [
   "SS9525.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Morebath",
  "county": "Devon"
 }
}