{
 "ocl_version": "0.1.0",
 "name": "Peacock Road",
 "slug": "peacock-road",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 35.19103583030585,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 458.0,
   "end_distance_m": 460.0,
   "start_elevation_m": 334.2958649149219,
   "end_elevation_m": 334.999685631528,
   "min_gradient_pct": -5.007668171907653
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 32.95380671464917,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 458.0,
   "end_distance_m": 461.0,
   "start_elevation_m": 334.2958649149219,
   "end_elevation_m": 335.28447911636135,
   "min_gradient_pct": -3.9621697847299706
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 30.255066123784218,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 458.0,
   "end_distance_m": 463.0,
   "start_elevation_m": 334.2958649149219,
   "end_elevation_m": 335.8086182211111,
   "min_gradient_pct": -2.4577507538708687
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 26.027697964337904,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 454.0,
   "end_distance_m": 464.0,
   "start_elevation_m": 333.4613106300982,
   "end_elevation_m": 336.064080426532,
   "min_gradient_pct": 0.7730747299541463
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.68794557184185,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 444.0,
   "end_distance_m": 464.0,
   "start_elevation_m": 331.7264913121636,
   "end_elevation_m": 336.064080426532,
   "min_gradient_pct": 1.8750504331262619
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.64710959516424,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 439.0,
   "end_distance_m": 464.0,
   "start_elevation_m": 330.9023030277409,
   "end_elevation_m": 336.064080426532,
   "min_gradient_pct": 2.0251842668330937
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 16.16592608353585,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 414.0,
   "end_distance_m": 464.0,
   "start_elevation_m": 327.98111738476405,
   "end_elevation_m": 336.064080426532,
   "min_gradient_pct": 2.23574205081286
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 12.396421873430597,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 57.0,
   "end_distance_m": 157.0,
   "start_elevation_m": 295.79167415665273,
   "end_elevation_m": 308.18809603008333,
   "min_gradient_pct": 4.543360296413937
  }
 ],
 "shape": {
  "ascent_concentration": 0.339,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 69.0,
  "shape_class": "sustained"
 },
 "length_m": 470.37308969904933,
 "start_elevation_m": 293.01876056170744,
 "end_elevation_m": 336.01276032898045,
 "endpoint_gain_m": 42.99399976727301,
 "overall_gradient_pct": 9.140403800477003,
 "accumulated_ascent_m": 43.419635841866864,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 30.255066123784218,
   "start_distance_m": 458.0,
   "end_distance_m": 463.0,
   "midpoint_distance_m": 460.5,
   "start_elevation_m": 334.2958649149219,
   "end_elevation_m": 335.8086182211111,
   "start_xy": [
    361955.23825925373,
    277096.0516581289
   ],
   "end_xy": [
    361950.2386026428,
    277096.1102565285
   ]
  },
  "max_10m": {
   "gradient_pct": 26.027697964337904,
   "start_distance_m": 454.0,
   "end_distance_m": 464.0,
   "midpoint_distance_m": 459.0,
   "start_elevation_m": 333.4613106300982,
   "end_elevation_m": 336.064080426532,
   "start_xy": [
    361959.2379845425,
    277096.00477940927
   ],
   "end_xy": [
    361949.2386713206,
    277096.1219762084
   ]
  },
  "max_20m": {
   "gradient_pct": 21.68794557184185,
   "start_distance_m": 444.0,
   "end_distance_m": 464.0,
   "midpoint_distance_m": 454.0,
   "start_elevation_m": 331.7264913121636,
   "end_elevation_m": 336.064080426532,
   "start_xy": [
    361969.23729776446,
    277095.8875826101
   ],
   "end_xy": [
    361949.2386713206,
    277096.1219762084
   ]
  },
  "max_25m": {
   "gradient_pct": 20.64710959516424,
   "start_distance_m": 439.0,
   "end_distance_m": 464.0,
   "midpoint_distance_m": 451.5,
   "start_elevation_m": 330.9023030277409,
   "end_elevation_m": 336.064080426532,
   "start_xy": [
    361974.2369543754,
    277095.82898421056
   ],
   "end_xy": [
    361949.2386713206,
    277096.1219762084
   ]
  },
  "max_50m": {
   "gradient_pct": 16.16592608353585,
   "start_distance_m": 414.0,
   "end_distance_m": 464.0,
   "midpoint_distance_m": 439.0,
   "start_elevation_m": 327.98111738476405,
   "end_elevation_m": 336.064080426532,
   "start_xy": [
    361999.23523743026,
    277095.5359922127
   ],
   "end_xy": [
    361949.2386713206,
    277096.1219762084
   ]
  },
  "max_100m": {
   "gradient_pct": 12.396421873430597,
   "start_distance_m": 57.0,
   "end_distance_m": 157.0,
   "midpoint_distance_m": 107.0,
   "start_elevation_m": 295.79167415665273,
   "end_elevation_m": 308.18809603008333,
   "start_xy": [
    362307.4095321682,
    276979.6781569907
   ],
   "end_xy": [
    362234.6485592292,
    277046.34146740305
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -2.4577507538708687,
   "start_distance_m": 465.0,
   "end_distance_m": 470.0,
   "midpoint_distance_m": 467.5,
   "start_elevation_m": 336.1194479350871,
   "end_elevation_m": 335.9965603973936,
   "start_xy": [
    361948.2387374217,
    277096.13347349083
   ],
   "end_xy": [
    361943.23906523804,
    277096.1907278013
   ]
  },
  "min_10m": {
   "gradient_pct": 0.7730747299541463,
   "start_distance_m": 286.0,
   "end_distance_m": 296.0,
   "midpoint_distance_m": 291.0,
   "start_elevation_m": 319.1461057836044,
   "end_elevation_m": 319.2234132565998,
   "start_xy": [
    362127.0271029121,
    277100.7897628608
   ],
   "end_xy": [
    362117.0404674563,
    277100.3335312351
   ]
  },
  "min_20m": {
   "gradient_pct": 1.8750504331262619,
   "start_distance_m": 289.0,
   "end_distance_m": 309.0,
   "midpoint_distance_m": 299.0,
   "start_elevation_m": 319.21318623559966,
   "end_elevation_m": 319.5881963222249,
   "start_xy": [
    362124.02876181,
    277100.69000998983
   ],
   "end_xy": [
    362104.0969198462,
    277099.12333486043
   ]
  },
  "min_25m": {
   "gradient_pct": 2.0251842668330937,
   "start_distance_m": 285.0,
   "end_distance_m": 310.0,
   "midpoint_distance_m": 297.5,
   "start_elevation_m": 319.1150827295204,
   "end_elevation_m": 319.62137879622867,
   "start_xy": [
    362128.0265499461,
    277100.8230138178
   ],
   "end_xy": [
    362103.10126233776,
    277099.0302428316
   ]
  },
  "min_50m": {
   "gradient_pct": 2.23574205081286,
   "start_distance_m": 262.0,
   "end_distance_m": 312.0,
   "midpoint_distance_m": 287.0,
   "start_elevation_m": 318.56559154397075,
   "end_elevation_m": 319.6834625693772,
   "start_xy": [
    362151.0138317291,
    277101.5877858285
   ],
   "end_xy": [
    362101.1099473208,
    277098.844058774
   ]
  },
  "min_100m": {
   "gradient_pct": 4.543360296413937,
   "start_distance_m": 245.0,
   "end_distance_m": 345.0,
   "midpoint_distance_m": 295.0,
   "start_elevation_m": 317.8833410835609,
   "end_elevation_m": 322.4267013799748,
   "start_xy": [
    362168.0044313079,
    277102.1530520973
   ],
   "end_xy": [
    362068.18095774774,
    277096.70231907687
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 35.19103583030585,
   "start_distance_m": 458.0,
   "end_distance_m": 460.0,
   "midpoint_distance_m": 459.0,
   "start_elevation_m": 334.2958649149219,
   "end_elevation_m": 334.999685631528,
   "start_xy": [
    361955.23825925373,
    277096.0516581289
   ],
   "end_xy": [
    361953.2383966094,
    277096.07509748876
   ]
  },
  "max_3m": {
   "gradient_pct": 32.95380671464917,
   "start_distance_m": 458.0,
   "end_distance_m": 461.0,
   "midpoint_distance_m": 459.5,
   "start_elevation_m": 334.2958649149219,
   "end_elevation_m": 335.28447911636135,
   "start_xy": [
    361955.23825925373,
    277096.0516581289
   ],
   "end_xy": [
    361952.2384652872,
    277096.0868171687
   ]
  }
 },
 "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": {
  "review": [],
  "extent": [
   "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/SO6075.tif"
  ],
  "calculated_at": "2026-09-01T06:54:52+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/england-2026-08-12-roads.osm.pbf",
  "osm_snapshot": "2026-08-12T20:21:46Z",
  "run_id": "chunk-05-260901",
  "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": [
   "SO6075.tif"
  ],
  "canopy_check": "unavailable \u2014 surface model missing: [Errno 28] No space left on device",
  "trimmed_from": "peacock-road",
  "trim_cut_m": [
   [
    0.0,
    206.2
   ]
  ],
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "Hoptonbank",
  "county": "Shropshire"
 }
}