{
 "ocl_version": "0.1.0",
 "name": "Cross Top",
 "slug": "cross-top",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 35.64136780921672,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1197.0,
   "end_distance_m": 1199.0,
   "start_elevation_m": 329.4209461636425,
   "end_elevation_m": 330.13377351982683,
   "min_gradient_pct": -18.05040603402972
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 29.715604990006266,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1197.0,
   "end_distance_m": 1200.0,
   "start_elevation_m": 329.4209461636425,
   "end_elevation_m": 330.3124143133427,
   "min_gradient_pct": -11.972473336478137
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.96970330387262,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1196.0,
   "end_distance_m": 1201.0,
   "start_elevation_m": 329.2867167639917,
   "end_elevation_m": 330.48520192918534,
   "min_gradient_pct": -6.885418804286019
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.43776330777223,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 875.0,
   "end_distance_m": 885.0,
   "start_elevation_m": 294.622926229562,
   "end_elevation_m": 296.8667025603392,
   "min_gradient_pct": -6.54122342669325
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.09193603495237,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 871.0,
   "end_distance_m": 891.0,
   "start_elevation_m": 293.73842548220233,
   "end_elevation_m": 298.1568126891928,
   "min_gradient_pct": -5.310460765272751
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.928836257171724,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 869.0,
   "end_distance_m": 894.0,
   "start_elevation_m": 293.3106095679347,
   "end_elevation_m": 298.79281863222764,
   "min_gradient_pct": -4.967342841679965
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.798346634013114,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 850.0,
   "end_distance_m": 900.0,
   "start_elevation_m": 289.6041046796887,
   "end_elevation_m": 300.00327799669526,
   "min_gradient_pct": -4.119019783215549
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.480568439263436,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1259.0,
   "end_distance_m": 1359.0,
   "start_elevation_m": 337.69720332506483,
   "end_elevation_m": 357.17777176432827,
   "min_gradient_pct": -2.859977381266617
  }
 ],
 "shape": {
  "ascent_concentration": 0.411,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 312.0,
  "shape_class": "sustained"
 },
 "length_m": 3719.5294225567254,
 "start_elevation_m": 221.78090319592332,
 "end_elevation_m": 497.0930660020474,
 "endpoint_gain_m": 275.3121628061241,
 "overall_gradient_pct": 7.401800914290937,
 "accumulated_ascent_m": 283.6892211394116,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.96970330387262,
   "start_distance_m": 1196.0,
   "end_distance_m": 1201.0,
   "midpoint_distance_m": 1198.5,
   "start_elevation_m": 329.2867167639917,
   "end_elevation_m": 330.48520192918534,
   "start_xy": [
    394892.33446431183,
    492137.77844091615
   ],
   "end_xy": [
    394895.5265305645,
    492141.6269098375
   ]
  },
  "max_10m": {
   "gradient_pct": 22.43776330777223,
   "start_distance_m": 875.0,
   "end_distance_m": 885.0,
   "midpoint_distance_m": 880.0,
   "start_elevation_m": 294.622926229562,
   "end_elevation_m": 296.8667025603392,
   "start_xy": [
    394905.3905666203,
    491858.70184784447
   ],
   "end_xy": [
    394900.16732481384,
    491867.2293178697
   ]
  },
  "max_20m": {
   "gradient_pct": 22.09193603495237,
   "start_distance_m": 871.0,
   "end_distance_m": 891.0,
   "midpoint_distance_m": 881.0,
   "start_elevation_m": 293.73842548220233,
   "end_elevation_m": 298.1568126891928,
   "start_xy": [
    394907.4798633428,
    491855.29085983435
   ],
   "end_xy": [
    394896.72677103453,
    491872.1415095523
   ]
  },
  "max_25m": {
   "gradient_pct": 21.928836257171724,
   "start_distance_m": 869.0,
   "end_distance_m": 894.0,
   "midpoint_distance_m": 881.5,
   "start_elevation_m": 293.3106095679347,
   "end_elevation_m": 298.79281863222764,
   "start_xy": [
    394908.35903106234,
    491853.4986394122
   ],
   "end_xy": [
    394894.9692672644,
    491874.57280149247
   ]
  },
  "max_50m": {
   "gradient_pct": 20.798346634013114,
   "start_distance_m": 850.0,
   "end_distance_m": 900.0,
   "midpoint_distance_m": 875.0,
   "start_elevation_m": 289.6041046796887,
   "end_elevation_m": 300.00327799669526,
   "start_xy": [
    394916.0351001999,
    491836.11824923835
   ],
   "end_xy": [
    394891.4542597243,
    491879.4353853727
   ]
  },
  "max_100m": {
   "gradient_pct": 19.480568439263436,
   "start_distance_m": 1259.0,
   "end_distance_m": 1359.0,
   "midpoint_distance_m": 1309.0,
   "start_elevation_m": 337.69720332506483,
   "end_elevation_m": 357.17777176432827,
   "start_xy": [
    394928.37318530073,
    492189.25034018676
   ],
   "end_xy": [
    394949.0994353248,
    492286.53372407926
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -6.885418804286019,
   "start_distance_m": 3712.0,
   "end_distance_m": 3717.0,
   "midpoint_distance_m": 3714.5,
   "start_elevation_m": 497.6046302031055,
   "end_elevation_m": 497.2603592628912,
   "start_xy": [
    393950.75339204364,
    494335.9258188672
   ],
   "end_xy": [
    393946.75415305933,
    494338.9268332868
   ]
  },
  "min_10m": {
   "gradient_pct": -6.54122342669325,
   "start_distance_m": 3709.0,
   "end_distance_m": 3719.0,
   "midpoint_distance_m": 3714.0,
   "start_elevation_m": 497.7843044715366,
   "end_elevation_m": 497.13018212886726,
   "start_xy": [
    393953.15293543425,
    494334.1252102155
   ],
   "end_xy": [
    393945.1544574656,
    494340.12723905465
   ]
  },
  "min_20m": {
   "gradient_pct": -5.310460765272751,
   "start_distance_m": 2872.0,
   "end_distance_m": 2892.0,
   "midpoint_distance_m": 2882.0,
   "start_elevation_m": 481.4136850767509,
   "end_elevation_m": 480.35159292369633,
   "start_xy": [
    394387.99887441116,
    493650.8361728528
   ],
   "end_xy": [
    394383.5975047548,
    493670.33461732045
   ]
  },
  "min_25m": {
   "gradient_pct": -4.967342841679965,
   "start_distance_m": 2871.0,
   "end_distance_m": 2896.0,
   "midpoint_distance_m": 2883.5,
   "start_elevation_m": 481.4529065643061,
   "end_elevation_m": 480.2110708538861,
   "start_xy": [
    394388.2744217497,
    493649.8748853494
   ],
   "end_xy": [
    394382.7917863414,
    493674.2526292957
   ]
  },
  "min_50m": {
   "gradient_pct": -4.119019783215549,
   "start_distance_m": 2869.0,
   "end_distance_m": 2919.0,
   "midpoint_distance_m": 2894.0,
   "start_elevation_m": 481.52579486813994,
   "end_elevation_m": 479.46628497653217,
   "start_xy": [
    394388.8255164268,
    493647.9523103426
   ],
   "end_xy": [
    394378.15890546434,
    493696.78119815345
   ]
  },
  "min_100m": {
   "gradient_pct": -2.859977381266617,
   "start_distance_m": 2874.0,
   "end_distance_m": 2974.0,
   "midpoint_distance_m": 2924.0,
   "start_elevation_m": 481.3197454123617,
   "end_elevation_m": 478.4597680310951,
   "start_xy": [
    394387.4477797341,
    493652.7587478596
   ],
   "end_xy": [
    394367.0802772801,
    493750.6538628133
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 35.64136780921672,
   "start_distance_m": 1197.0,
   "end_distance_m": 1199.0,
   "midpoint_distance_m": 1198.0,
   "start_elevation_m": 329.4209461636425,
   "end_elevation_m": 330.13377351982683,
   "start_xy": [
    394892.97287756234,
    492138.5481347004
   ],
   "end_xy": [
    394894.2497040634,
    492140.08752226894
   ]
  },
  "max_3m": {
   "gradient_pct": 29.715604990006266,
   "start_distance_m": 1197.0,
   "end_distance_m": 1200.0,
   "midpoint_distance_m": 1198.5,
   "start_elevation_m": 329.4209461636425,
   "end_elevation_m": 330.3124143133427,
   "start_xy": [
    394892.97287756234,
    492138.5481347004
   ],
   "end_xy": [
    394894.88811731397,
    492140.85721605323
   ]
  }
 },
 "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": 0.003,
   "obstruction_max_height_m": 14.52,
   "flagged_windows_m": []
  },
  "review": [],
  "extent": [
   "descends_at_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/SD9090.tif",
   "data/cache/england/bulk_dtm_1m/SD9590.tif"
  ],
  "calculated_at": "2026-09-05T01:01:12+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "/mnt/HC_Volume_106794610/hunt-gb/regions/region-13.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": [
   "SD9090.tif",
   "SD9590.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Askrigg",
  "county": "North Yorkshire"
 }
}