{
 "ocl_version": "0.1.0",
 "name": "Michaelgate",
 "slug": "michaelgate",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 17.613107277432505,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 111.0,
   "end_distance_m": 113.0,
   "start_elevation_m": 45.9634814914472,
   "end_elevation_m": 46.31574363699585,
   "min_gradient_pct": -1.620549958432349
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 17.234229383506044,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 99.0,
   "end_distance_m": 102.0,
   "start_elevation_m": 43.985330807562434,
   "end_elevation_m": 44.502357689067615,
   "min_gradient_pct": -1.0361162537696107
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 17.03033088966066,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 97.0,
   "end_distance_m": 102.0,
   "start_elevation_m": 43.65084114458458,
   "end_elevation_m": 44.502357689067615,
   "min_gradient_pct": 0.010142198484430764
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 16.67614454180125,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 122.0,
   "end_distance_m": 132.0,
   "start_elevation_m": 47.78227149301458,
   "end_elevation_m": 49.44988594719471,
   "min_gradient_pct": 0.7986834070867133
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 16.60909078875921,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 118.0,
   "end_distance_m": 138.0,
   "start_elevation_m": 47.11652583587455,
   "end_elevation_m": 50.43834399362639,
   "min_gradient_pct": 3.2104020119222554
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 16.5834199844802,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 98.0,
   "end_distance_m": 123.0,
   "start_elevation_m": 43.816341684187634,
   "end_elevation_m": 47.962196680307684,
   "min_gradient_pct": 4.148048889317749,
   "lateral_min_pct": 16.53,
   "lateral_max_pct": 17.6
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 16.39659302535864,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 97.0,
   "end_distance_m": 147.0,
   "start_elevation_m": 43.65084114458458,
   "end_elevation_m": 51.8491376572639,
   "min_gradient_pct": 9.04091001019873
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.434627118310175,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 55.0,
   "end_distance_m": 155.0,
   "start_elevation_m": 37.5218013074306,
   "end_elevation_m": 52.956428425740775,
   "min_gradient_pct": 12.678295553824668
  }
 ],
 "shape": {
  "ascent_concentration": 0.325,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 152.0,
  "shape_class": "sustained"
 },
 "length_m": 185.15299069457544,
 "start_elevation_m": 31.197920973814334,
 "end_elevation_m": 54.46978100633852,
 "endpoint_gain_m": 23.271860032524188,
 "overall_gradient_pct": 12.568989539527864,
 "accumulated_ascent_m": 23.311201671698438,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 17.03033088966066,
   "start_distance_m": 97.0,
   "end_distance_m": 102.0,
   "midpoint_distance_m": 99.5,
   "start_elevation_m": 43.65084114458458,
   "end_elevation_m": 44.502357689067615,
   "start_xy": [
    497590.53182696516,
    371643.888552192
   ],
   "end_xy": [
    497593.1769166161,
    371648.13160542503
   ]
  },
  "max_10m": {
   "gradient_pct": 16.67614454180125,
   "start_distance_m": 122.0,
   "end_distance_m": 132.0,
   "midpoint_distance_m": 127.0,
   "start_elevation_m": 47.78227149301458,
   "end_elevation_m": 49.44988594719471,
   "start_xy": [
    497603.7572752199,
    371665.1038183572
   ],
   "end_xy": [
    497609.0474545218,
    371673.5899248233
   ]
  },
  "max_20m": {
   "gradient_pct": 16.60909078875921,
   "start_distance_m": 118.0,
   "end_distance_m": 138.0,
   "midpoint_distance_m": 128.0,
   "start_elevation_m": 47.11652583587455,
   "end_elevation_m": 50.43834399362639,
   "start_xy": [
    497601.6412034991,
    371661.70937577076
   ],
   "end_xy": [
    497612.22156210296,
    371678.68158870295
   ]
  },
  "max_25m": {
   "gradient_pct": 16.5834199844802,
   "start_distance_m": 98.0,
   "end_distance_m": 123.0,
   "midpoint_distance_m": 110.5,
   "start_elevation_m": 43.816341684187634,
   "end_elevation_m": 47.962196680307684,
   "start_xy": [
    497591.0608448953,
    371644.73716283863
   ],
   "end_xy": [
    497604.2862931501,
    371665.95242900384
   ]
  },
  "max_50m": {
   "gradient_pct": 16.39659302535864,
   "start_distance_m": 97.0,
   "end_distance_m": 147.0,
   "midpoint_distance_m": 122.0,
   "start_elevation_m": 43.65084114458458,
   "end_elevation_m": 51.8491376572639,
   "start_xy": [
    497590.53182696516,
    371643.888552192
   ],
   "end_xy": [
    497616.9827234746,
    371686.31908452243
   ]
  },
  "max_100m": {
   "gradient_pct": 15.434627118310175,
   "start_distance_m": 55.0,
   "end_distance_m": 155.0,
   "midpoint_distance_m": 105.0,
   "start_elevation_m": 37.5218013074306,
   "end_elevation_m": 52.956428425740775,
   "start_xy": [
    497561.74492636806,
    371614.44756109174
   ],
   "end_xy": [
    497621.2148669162,
    371693.1079696953
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.010142198484430764,
   "start_distance_m": 174.0,
   "end_distance_m": 179.0,
   "midpoint_distance_m": 176.5,
   "start_elevation_m": 54.31847618945463,
   "end_elevation_m": 54.31898329937885,
   "start_xy": [
    497631.2320769831,
    371709.2527158655
   ],
   "end_xy": [
    497634.27033813664,
    371713.21788586053
   ]
  },
  "min_10m": {
   "gradient_pct": 0.7986834070867133,
   "start_distance_m": 174.0,
   "end_distance_m": 184.0,
   "midpoint_distance_m": 179.0,
   "start_elevation_m": 54.31847618945463,
   "end_elevation_m": 54.3983445301633,
   "start_xy": [
    497631.2320769831,
    371709.2527158655
   ],
   "end_xy": [
    497637.38318362396,
    371717.13071002887
   ]
  },
  "min_20m": {
   "gradient_pct": 3.2104020119222554,
   "start_distance_m": 165.0,
   "end_distance_m": 185.0,
   "midpoint_distance_m": 175.0,
   "start_elevation_m": 53.81387370459305,
   "end_elevation_m": 54.4559541069775,
   "start_xy": [
    497626.505335438,
    371701.5938958487
   ],
   "end_xy": [
    497638.0057527214,
    371717.91327486257
   ]
  },
  "min_25m": {
   "gradient_pct": 4.148048889317749,
   "start_distance_m": 160.0,
   "end_distance_m": 185.0,
   "midpoint_distance_m": 172.5,
   "start_elevation_m": 53.41894188464806,
   "end_elevation_m": 54.4559541069775,
   "start_xy": [
    497623.8599565671,
    371697.3510229283
   ],
   "end_xy": [
    497638.0057527214,
    371717.91327486257
   ]
  },
  "min_50m": {
   "gradient_pct": 9.04091001019873,
   "start_distance_m": 135.0,
   "end_distance_m": 185.0,
   "midpoint_distance_m": 160.0,
   "start_elevation_m": 49.935499101878136,
   "end_elevation_m": 54.4559541069775,
   "start_xy": [
    497610.6345083124,
    371676.1357567631
   ],
   "end_xy": [
    497638.0057527214,
    371717.91327486257
   ]
  },
  "min_100m": {
   "gradient_pct": 12.678295553824668,
   "start_distance_m": 85.0,
   "end_distance_m": 185.0,
   "midpoint_distance_m": 135.0,
   "start_elevation_m": 41.77765855315283,
   "end_elevation_m": 54.4559541069775,
   "start_xy": [
    497584.16571625887,
    371633.73634897586
   ],
   "end_xy": [
    497638.0057527214,
    371717.91327486257
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 17.613107277432505,
   "start_distance_m": 111.0,
   "end_distance_m": 113.0,
   "midpoint_distance_m": 112.0,
   "start_elevation_m": 45.9634814914472,
   "end_elevation_m": 46.31574363699585,
   "start_xy": [
    497597.9380779878,
    371655.7691012445
   ],
   "end_xy": [
    497598.9961138482,
    371657.46632253774
   ]
  },
  "max_3m": {
   "gradient_pct": 17.234229383506044,
   "start_distance_m": 99.0,
   "end_distance_m": 102.0,
   "midpoint_distance_m": 100.5,
   "start_elevation_m": 43.985330807562434,
   "end_elevation_m": 44.502357689067615,
   "start_xy": [
    497591.5898628255,
    371645.5857734852
   ],
   "end_xy": [
    497593.1769166161,
    371648.13160542503
   ]
  }
 },
 "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": 0.021,
   "obstruction_max_height_m": 2.7,
   "flagged_windows_m": []
  },
  "review": [],
  "extent": [
   "may_start_earlier"
  ],
  "lateral_stability": {
   "offsets_m": [
    -1.0,
    -0.5,
    0.0,
    0.5,
    1.0
   ],
   "windows": [
    {
     "window_m": 25,
     "min_pct": 16.53,
     "max_pct": 17.6
    },
    {
     "window_m": 10,
     "min_pct": 16.57,
     "max_pct": 19.05
    },
    {
     "window_m": 5,
     "min_pct": 16.84,
     "max_pct": 21.26
    }
   ]
  }
 },
 "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/SK9570.tif"
  ],
  "calculated_at": "2026-08-28T19:14:20+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/england-2026-08-27.osm.pbf",
  "osm_snapshot": "2026-08-26T20:22:15Z",
  "run_id": "fame-backfill-batch-2-260828",
  "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": [
   "SK9570.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Lincoln",
  "county": "Lincolnshire"
 }
}