{
 "ocl_version": "0.1.0",
 "name": "Cross of Greet",
 "slug": "cross-of-greet",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 42.504703218986606,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 2262.0,
   "end_distance_m": 2264.0,
   "start_elevation_m": 367.3766939448277,
   "end_elevation_m": 368.22678800920744,
   "min_gradient_pct": -26.18466836451887
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 39.0183809917005,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 2262.0,
   "end_distance_m": 2265.0,
   "start_elevation_m": 367.3766939448277,
   "end_elevation_m": 368.5472453745787,
   "min_gradient_pct": -25.86000421284969
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 30.638208490360057,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2261.0,
   "end_distance_m": 2266.0,
   "start_elevation_m": 367.2015478891611,
   "end_elevation_m": 368.7334583136791,
   "min_gradient_pct": -25.85525536938235
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.94140565425755,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2262.0,
   "end_distance_m": 2272.0,
   "start_elevation_m": 367.3766939448277,
   "end_elevation_m": 369.57083451025346,
   "min_gradient_pct": -22.34065629772715
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 18.30320847350407,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2261.0,
   "end_distance_m": 2281.0,
   "start_elevation_m": 367.2015478891611,
   "end_elevation_m": 370.8621895838619,
   "min_gradient_pct": -13.671604040796126
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 17.198646383705864,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2261.0,
   "end_distance_m": 2286.0,
   "start_elevation_m": 367.2015478891611,
   "end_elevation_m": 371.50120948508754,
   "min_gradient_pct": -12.297839122880077,
   "lateral_min_pct": 16.75,
   "lateral_max_pct": 18.07
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 15.377248675898613,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2594.0,
   "end_distance_m": 2644.0,
   "start_elevation_m": 396.132451952427,
   "end_elevation_m": 403.8210762903763,
   "min_gradient_pct": -7.846857635705533
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 14.345183756516292,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2560.0,
   "end_distance_m": 2660.0,
   "start_elevation_m": 391.6556037415095,
   "end_elevation_m": 406.0007874980258,
   "min_gradient_pct": -5.228534297654676
  }
 ],
 "shape": {
  "ascent_concentration": 0.324,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 110.0,
  "shape_class": "sustained"
 },
 "length_m": 2937.0000000000223,
 "start_elevation_m": 238.7445229074854,
 "end_elevation_m": 426.9312809694393,
 "endpoint_gain_m": 188.1867580619539,
 "overall_gradient_pct": 6.407448350764469,
 "accumulated_ascent_m": 206.6113911380224,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 30.638208490360057,
   "start_distance_m": 2261.0,
   "end_distance_m": 2266.0,
   "midpoint_distance_m": 2263.5,
   "start_elevation_m": 367.2015478891611,
   "end_elevation_m": 368.7334583136791,
   "start_xy": [
    368774.0087386386,
    460534.1429473409
   ],
   "end_xy": [
    368769.14253476687,
    460535.2918859289
   ]
  },
  "max_10m": {
   "gradient_pct": 21.94140565425755,
   "start_distance_m": 2262.0,
   "end_distance_m": 2272.0,
   "midpoint_distance_m": 2267.0,
   "start_elevation_m": 367.3766939448277,
   "end_elevation_m": 369.57083451025346,
   "start_xy": [
    368773.03549786424,
    460534.3727350585
   ],
   "end_xy": [
    368763.34636016196,
    460536.06083421904
   ]
  },
  "max_20m": {
   "gradient_pct": 18.30320847350407,
   "start_distance_m": 2261.0,
   "end_distance_m": 2281.0,
   "midpoint_distance_m": 2271.0,
   "start_elevation_m": 367.2015478891611,
   "end_elevation_m": 370.8621895838619,
   "start_xy": [
    368774.0087386386,
    460534.1429473409
   ],
   "end_xy": [
    368754.966996543,
    460532.7765892006
   ]
  },
  "max_25m": {
   "gradient_pct": 17.198646383705864,
   "start_distance_m": 2261.0,
   "end_distance_m": 2286.0,
   "midpoint_distance_m": 2273.5,
   "start_elevation_m": 367.2015478891611,
   "end_elevation_m": 371.50120948508754,
   "start_xy": [
    368774.0087386386,
    460534.1429473409
   ],
   "end_xy": [
    368750.31179453246,
    460530.9520086348
   ]
  },
  "max_50m": {
   "gradient_pct": 15.377248675898613,
   "start_distance_m": 2594.0,
   "end_distance_m": 2644.0,
   "midpoint_distance_m": 2619.0,
   "start_elevation_m": 396.132451952427,
   "end_elevation_m": 403.8210762903763,
   "start_xy": [
    368469.71252856805,
    460620.8259075415
   ],
   "end_xy": [
    368425.5572706983,
    460643.1366220357
   ]
  },
  "max_100m": {
   "gradient_pct": 14.345183756516292,
   "start_distance_m": 2560.0,
   "end_distance_m": 2660.0,
   "midpoint_distance_m": 2610.0,
   "start_elevation_m": 391.6556037415095,
   "end_elevation_m": 406.0007874980258,
   "start_xy": [
    368497.2660520442,
    460600.90598424716
   ],
   "end_xy": [
    368410.4413894288,
    460648.3816323738
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -25.85525536938235,
   "start_distance_m": 2081.0,
   "end_distance_m": 2086.0,
   "midpoint_distance_m": 2083.5,
   "start_elevation_m": 363.6702214589647,
   "end_elevation_m": 362.3774586904956,
   "start_xy": [
    368938.0514706811,
    460462.70030169154
   ],
   "end_xy": [
    368933.6540916326,
    460465.08001963777
   ]
  },
  "min_10m": {
   "gradient_pct": -22.34065629772715,
   "start_distance_m": 2079.0,
   "end_distance_m": 2089.0,
   "midpoint_distance_m": 2084.0,
   "start_elevation_m": 363.9495664204447,
   "end_elevation_m": 361.71550079067197,
   "start_xy": [
    368939.81042230054,
    460461.748414513
   ],
   "end_xy": [
    368931.0156642035,
    460466.50785040547
   ]
  },
  "min_20m": {
   "gradient_pct": -13.671604040796126,
   "start_distance_m": 2069.0,
   "end_distance_m": 2089.0,
   "midpoint_distance_m": 2079.0,
   "start_elevation_m": 364.4498215988312,
   "end_elevation_m": 361.71550079067197,
   "start_xy": [
    368948.6051803976,
    460456.9889786206
   ],
   "end_xy": [
    368931.0156642035,
    460466.50785040547
   ]
  },
  "min_25m": {
   "gradient_pct": -12.297839122880077,
   "start_distance_m": 2069.0,
   "end_distance_m": 2094.0,
   "midpoint_distance_m": 2081.5,
   "start_elevation_m": 364.4498215988312,
   "end_elevation_m": 361.3753618181112,
   "start_xy": [
    368948.6051803976,
    460456.9889786206
   ],
   "end_xy": [
    368926.6182851549,
    460468.8875683517
   ]
  },
  "min_50m": {
   "gradient_pct": -7.846857635705533,
   "start_distance_m": 2079.0,
   "end_distance_m": 2129.0,
   "midpoint_distance_m": 2104.0,
   "start_elevation_m": 363.9495664204447,
   "end_elevation_m": 360.0261376025919,
   "start_xy": [
    368939.81042230054,
    460461.748414513
   ],
   "end_xy": [
    368895.0468840988,
    460483.76416069164
   ]
  },
  "min_100m": {
   "gradient_pct": -5.228534297654676,
   "start_distance_m": 2068.0,
   "end_distance_m": 2168.0,
   "midpoint_distance_m": 2118.0,
   "start_elevation_m": 364.5097925302444,
   "end_elevation_m": 359.2812582325897,
   "start_xy": [
    368949.4846562073,
    460456.5130350314
   ],
   "end_xy": [
    368858.26044899906,
    460496.7163108087
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 42.504703218986606,
   "start_distance_m": 2262.0,
   "end_distance_m": 2264.0,
   "midpoint_distance_m": 2263.0,
   "start_elevation_m": 367.3766939448277,
   "end_elevation_m": 368.22678800920744,
   "start_xy": [
    368773.03549786424,
    460534.3727350585
   ],
   "end_xy": [
    368771.0890163155,
    460534.8323104937
   ]
  },
  "max_3m": {
   "gradient_pct": 39.0183809917005,
   "start_distance_m": 2262.0,
   "end_distance_m": 2265.0,
   "midpoint_distance_m": 2263.5,
   "start_elevation_m": 367.3766939448277,
   "end_elevation_m": 368.5472453745787,
   "start_xy": [
    368773.03549786424,
    460534.3727350585
   ],
   "end_xy": [
    368770.1157755412,
    460535.06209821126
   ]
  }
 },
 "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": 0.0,
   "obstruction_max_height_m": 0.95,
   "flagged_windows_m": []
  },
  "review": [
   "short_window_divergence"
  ],
  "extent": [],
  "lateral_stability": {
   "offsets_m": [
    -1.0,
    -0.5,
    0.0,
    0.5,
    1.0
   ],
   "windows": [
    {
     "window_m": 25,
     "min_pct": 16.75,
     "max_pct": 18.07
    },
    {
     "window_m": 10,
     "min_pct": 20.98,
     "max_pct": 24.33
    },
    {
     "window_m": 5,
     "min_pct": 27.53,
     "max_pct": 35.73
    }
   ]
  }
 },
 "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/SD6555.tif",
   "data/cache/england/bulk_dtm_1m/SD7055.tif",
   "data/cache/england/bulk_dtm_1m/SD6560.tif"
  ],
  "calculated_at": "2026-09-05T08:59:52+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/england-2026-08-27-roads.osm.pbf",
  "osm_snapshot": "2026-08-26T20:22:15Z",
  "run_id": "fix-260905-fix-chain-england-england-2026-08-27",
  "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": [
   "SD6555.tif",
   "SD7055.tif",
   "SD6560.tif"
  ],
  "route_cut_m": 2937.0,
  "climb_origin": "discovered",
  "door_status": "below every adoption door at fold time \u2014 kept pending: hunt wave 1 page admitted on the coarse inventory door (adopt_hunt_wave); the summit trim can only raise its numbers \u2014 LiDAR-door standing is a separate ruling (listed in below-door.csv)",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "White Syke Clough",
  "county": "Lancashire"
 }
}