{
 "ocl_version": "0.1.0",
 "name": "Burgoyne Heights Road",
 "slug": "burgoyne-heights-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 21.88575680076781,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 147.0,
   "end_distance_m": 149.0,
   "start_elevation_m": 210.31630103424152,
   "end_elevation_m": 210.75401617025688,
   "min_gradient_pct": -8.54007200940572
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.826405093375456,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 147.0,
   "end_distance_m": 150.0,
   "start_elevation_m": 210.31630103424152,
   "end_elevation_m": 210.97109318704278,
   "min_gradient_pct": -8.33945902891268
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.442469412302216,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 145.0,
   "end_distance_m": 150.0,
   "start_elevation_m": 209.89896971642767,
   "end_elevation_m": 210.97109318704278,
   "min_gradient_pct": -8.110630660078755
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.940991837864544,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 141.0,
   "end_distance_m": 151.0,
   "start_elevation_m": 209.07414992912672,
   "end_elevation_m": 211.16824911291317,
   "min_gradient_pct": -7.957677795469067
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.300626247197897,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 135.0,
   "end_distance_m": 155.0,
   "start_elevation_m": 207.89767931517736,
   "end_elevation_m": 211.95780456461694,
   "min_gradient_pct": -7.84709362350867
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.12685584488395,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 131.0,
   "end_distance_m": 156.0,
   "start_elevation_m": 207.1139784173968,
   "end_elevation_m": 212.14569237861778,
   "min_gradient_pct": -7.7824211579441
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.299402345778674,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 125.0,
   "end_distance_m": 175.0,
   "start_elevation_m": 206.02450522806052,
   "end_elevation_m": 215.67420640094986,
   "min_gradient_pct": -7.723106756524885
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.56574389565199,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 99.0,
   "end_distance_m": 199.0,
   "start_elevation_m": 201.81707553478137,
   "end_elevation_m": 219.38281943043336,
   "min_gradient_pct": -7.572472064374466
  }
 ],
 "shape": {
  "ascent_concentration": 0.583,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 133.0,
  "shape_class": "stepped"
 },
 "length_m": 1030.1421855630895,
 "start_elevation_m": 196.24381016064294,
 "end_elevation_m": 229.26168461385515,
 "endpoint_gain_m": 33.017874453212215,
 "overall_gradient_pct": 3.2051764228220794,
 "accumulated_ascent_m": 48.572377551250554,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.442469412302216,
   "start_distance_m": 145.0,
   "end_distance_m": 150.0,
   "midpoint_distance_m": 147.5,
   "start_elevation_m": 209.89896971642767,
   "end_elevation_m": 210.97109318704278,
   "start_xy": [
    666230.1147532376,
    4638316.534501925
   ],
   "end_xy": [
    666228.2306656312,
    4638321.165425267
   ]
  },
  "max_10m": {
   "gradient_pct": 20.940991837864544,
   "start_distance_m": 141.0,
   "end_distance_m": 151.0,
   "midpoint_distance_m": 146.0,
   "start_elevation_m": 209.07414992912672,
   "end_elevation_m": 211.16824911291317,
   "start_xy": [
    666231.6189174012,
    4638312.828089891
   ],
   "end_xy": [
    666227.6636873443,
    4638321.989158004
   ]
  },
  "max_20m": {
   "gradient_pct": 20.300626247197897,
   "start_distance_m": 135.0,
   "end_distance_m": 155.0,
   "midpoint_distance_m": 145.0,
   "start_elevation_m": 207.89767931517736,
   "end_elevation_m": 211.95780456461694,
   "start_xy": [
    666233.4249595322,
    4638307.145044816
   ],
   "end_xy": [
    666225.3957741961,
    4638325.284088952
   ]
  },
  "max_25m": {
   "gradient_pct": 20.12685584488395,
   "start_distance_m": 131.0,
   "end_distance_m": 156.0,
   "midpoint_distance_m": 143.5,
   "start_elevation_m": 207.1139784173968,
   "end_elevation_m": 212.14569237861778,
   "start_xy": [
    666234.0213131639,
    4638303.189749334
   ],
   "end_xy": [
    666224.8287959091,
    4638326.107821689
   ]
  },
  "max_50m": {
   "gradient_pct": 19.299402345778674,
   "start_distance_m": 125.0,
   "end_distance_m": 175.0,
   "midpoint_distance_m": 150.0,
   "start_elevation_m": 206.02450522806052,
   "end_elevation_m": 215.67420640094986,
   "start_xy": [
    666234.9158436115,
    4638297.256806112
   ],
   "end_xy": [
    666214.0562084552,
    4638341.758743692
   ]
  },
  "max_100m": {
   "gradient_pct": 17.56574389565199,
   "start_distance_m": 99.0,
   "end_distance_m": 199.0,
   "midpoint_distance_m": 149.0,
   "start_elevation_m": 201.81707553478137,
   "end_elevation_m": 219.38281943043336,
   "start_xy": [
    666237.3026337575,
    4638271.382527571
   ],
   "end_xy": [
    666200.4487295662,
    4638361.528329381
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -8.110630660078755,
   "start_distance_m": 718.0,
   "end_distance_m": 723.0,
   "midpoint_distance_m": 720.5,
   "start_elevation_m": 223.55161005121292,
   "end_elevation_m": 223.14607851820898,
   "start_xy": [
    666013.4921864959,
    4638844.603940372
   ],
   "end_xy": [
    666011.9063647741,
    4638849.345793329
   ]
  },
  "min_10m": {
   "gradient_pct": -7.957677795469067,
   "start_distance_m": 713.0,
   "end_distance_m": 723.0,
   "midpoint_distance_m": 718.0,
   "start_elevation_m": 223.9418462977559,
   "end_elevation_m": 223.14607851820898,
   "start_xy": [
    666015.0780082177,
    4638839.8620874155
   ],
   "end_xy": [
    666011.9063647741,
    4638849.345793329
   ]
  },
  "min_20m": {
   "gradient_pct": -7.84709362350867,
   "start_distance_m": 733.0,
   "end_distance_m": 753.0,
   "midpoint_distance_m": 743.0,
   "start_elevation_m": 222.41636446907512,
   "end_elevation_m": 220.8469457443734,
   "start_xy": [
    666008.7347213305,
    4638858.829499244
   ],
   "end_xy": [
    666001.6676981123,
    4638877.534976248
   ]
  },
  "min_25m": {
   "gradient_pct": -7.7824211579441,
   "start_distance_m": 698.0,
   "end_distance_m": 723.0,
   "midpoint_distance_m": 710.5,
   "start_elevation_m": 225.091683807695,
   "end_elevation_m": 223.14607851820898,
   "start_xy": [
    666019.8354733832,
    4638825.636528544
   ],
   "end_xy": [
    666011.9063647741,
    4638849.345793329
   ]
  },
  "min_50m": {
   "gradient_pct": -7.723106756524885,
   "start_distance_m": 700.0,
   "end_distance_m": 750.0,
   "midpoint_distance_m": 725.0,
   "start_elevation_m": 224.94138239684338,
   "end_elevation_m": 221.07982901858094,
   "start_xy": [
    666019.2011446945,
    4638827.533269727
   ],
   "end_xy": [
    666002.7574960872,
    4638874.73991983
   ]
  },
  "min_100m": {
   "gradient_pct": -7.572472064374466,
   "start_distance_m": 694.0,
   "end_distance_m": 794.0,
   "midpoint_distance_m": 744.0,
   "start_elevation_m": 225.38132042308956,
   "end_elevation_m": 217.8088483587151,
   "start_xy": [
    666021.1041307607,
    4638821.843046178
   ],
   "end_xy": [
    665986.7737924545,
    4638915.734080612
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 21.88575680076781,
   "start_distance_m": 147.0,
   "end_distance_m": 149.0,
   "midpoint_distance_m": 148.0,
   "start_elevation_m": 210.31630103424152,
   "end_elevation_m": 210.75401617025688,
   "start_xy": [
    666229.3626711558,
    4638318.387707943
   ],
   "end_xy": [
    666228.610589074,
    4638320.24091396
   ]
  },
  "max_3m": {
   "gradient_pct": 21.826405093375456,
   "start_distance_m": 147.0,
   "end_distance_m": 150.0,
   "midpoint_distance_m": 148.5,
   "start_elevation_m": 210.31630103424152,
   "end_elevation_m": 210.97109318704278,
   "start_xy": [
    666229.3626711558,
    4638318.387707943
   ],
   "end_xy": [
    666228.2306656312,
    4638321.165425267
   ]
  }
 },
 "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": 0.597,
   "obstruction_max_height_m": 29.05,
   "flagged_windows_m": [
    20,
    25,
    50,
    100
   ]
  },
  "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:26918",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/ct/USGS_1M_18_x66y464_CT_Statewide_C16.tif"
  ],
  "calculated_at": "2026-09-04T19:12:20+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/connecticut-2026-08-23.osm.pbf",
  "osm_snapshot": "2026-08-22T20:21:28Z",
  "run_id": "us-hs-bench-260904",
  "elevation_provider": "USGS 3DEP (The National Map)",
  "elevation_licence": "Public domain \u2014 USGS 3DEP 1 m DEM, courtesy of the U.S. Geological Survey",
  "elevation_dataset": "USGS 3DEP 1 m DEM, CT_Statewide_C16 (collected 2016)",
  "elevation_tile_ids": [
   "x66y464"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://usgs-lidar-public.s3-us-west-2.amazonaws.com/USGS_LPC_CT_Sandy_2014_LAS_2015",
   "ept_crs": "EPSG:3857",
   "station_coverage": 0.999,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "New Hartford",
  "county": "Connecticut"
 }
}