{
 "ocl_version": "0.1.0",
 "name": "Kings Highway",
 "slug": "kings-highway-2",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 16.284815849971324,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1784.0,
   "end_distance_m": 1786.0,
   "start_elevation_m": 270.0016947890651,
   "end_elevation_m": 270.3273911060645,
   "min_gradient_pct": -7.224710171470861,
   "suppressed_max_gradient_pct": 85.67955138380938,
   "suppressed_location_m": [
    12.0,
    14.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 16.140456499338523,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1783.0,
   "end_distance_m": 1786.0,
   "start_elevation_m": 269.84317741108435,
   "end_elevation_m": 270.3273911060645,
   "min_gradient_pct": -6.3826680096231785,
   "suppressed_max_gradient_pct": 63.18992824113442,
   "suppressed_location_m": [
    11.0,
    14.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 15.944390079117738,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 1774.0,
   "end_distance_m": 1779.0,
   "start_elevation_m": 268.42008001361097,
   "end_elevation_m": 269.21729951756686,
   "min_gradient_pct": -6.224565815317646,
   "suppressed_max_gradient_pct": 41.10982424800227,
   "suppressed_location_m": [
    10.0,
    15.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 15.832418772112078,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1776.0,
   "end_distance_m": 1786.0,
   "start_elevation_m": 268.7441492288533,
   "end_elevation_m": 270.3273911060645,
   "min_gradient_pct": -5.907564220151471,
   "suppressed_max_gradient_pct": 20.005310891079944,
   "suppressed_location_m": [
    7.0,
    17.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 15.703061863861194,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1767.0,
   "end_distance_m": 1787.0,
   "start_elevation_m": 267.3353436553923,
   "end_elevation_m": 270.47595602816455,
   "min_gradient_pct": -5.698927443211517
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 15.553892641259836,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1767.0,
   "end_distance_m": 1792.0,
   "start_elevation_m": 267.3353436553923,
   "end_elevation_m": 271.22381681570727,
   "min_gradient_pct": -5.602058347257525
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 14.426576540918006,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 980.0,
   "end_distance_m": 1030.0,
   "start_elevation_m": 192.6620643684875,
   "end_elevation_m": 199.8753526389465,
   "min_gradient_pct": -4.671448531041619
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 13.560818048572882,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 971.0,
   "end_distance_m": 1071.0,
   "start_elevation_m": 191.42781188578778,
   "end_elevation_m": 204.98862993436066,
   "min_gradient_pct": -3.511282972203901
  }
 ],
 "shape": {
  "ascent_concentration": 0.504,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 155.0,
  "shape_class": "stepped"
 },
 "length_m": 3582.009953561354,
 "start_elevation_m": 140.8996549614852,
 "end_elevation_m": 307.8650751213354,
 "endpoint_gain_m": 166.9654201598502,
 "overall_gradient_pct": 4.661221557853227,
 "accumulated_ascent_m": 174.92602857587556,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 15.944390079117738,
   "start_distance_m": 1774.0,
   "end_distance_m": 1779.0,
   "midpoint_distance_m": 1776.5,
   "start_elevation_m": 268.42008001361097,
   "end_elevation_m": 269.21729951756686,
   "start_xy": [
    513363.3219634452,
    4516395.906007691
   ],
   "end_xy": [
    513368.04238646524,
    4516394.267179967
   ]
  },
  "max_10m": {
   "gradient_pct": 15.832418772112078,
   "start_distance_m": 1776.0,
   "end_distance_m": 1786.0,
   "midpoint_distance_m": 1781.0,
   "start_elevation_m": 268.7441492288533,
   "end_elevation_m": 270.3273911060645,
   "start_xy": [
    513365.1811788149,
    4516395.169117205
   ],
   "end_xy": [
    513374.7226378242,
    4516392.176163773
   ]
  },
  "max_20m": {
   "gradient_pct": 15.703061863861194,
   "start_distance_m": 1767.0,
   "end_distance_m": 1787.0,
   "midpoint_distance_m": 1777.0,
   "start_elevation_m": 267.3353436553923,
   "end_elevation_m": 270.47595602816455,
   "start_xy": [
    513356.8172421614,
    4516398.49224067
   ],
   "end_xy": [
    513375.68252674013,
    4516391.895783194
   ]
  },
  "max_25m": {
   "gradient_pct": 15.553892641259836,
   "start_distance_m": 1767.0,
   "end_distance_m": 1792.0,
   "midpoint_distance_m": 1779.5,
   "start_elevation_m": 267.3353436553923,
   "end_elevation_m": 271.22381681570727,
   "start_xy": [
    513356.8172421614,
    4516398.49224067
   ],
   "end_xy": [
    513380.4819713199,
    4516390.493880299
   ]
  },
  "max_50m": {
   "gradient_pct": 14.426576540918006,
   "start_distance_m": 980.0,
   "end_distance_m": 1030.0,
   "midpoint_distance_m": 1005.0,
   "start_elevation_m": 192.6620643684875,
   "end_elevation_m": 199.8753526389465,
   "start_xy": [
    513541.3596362198,
    4517135.09828838
   ],
   "end_xy": [
    513524.51864674303,
    4517088.25502801
   ]
  },
  "max_100m": {
   "gradient_pct": 13.560818048572882,
   "start_distance_m": 971.0,
   "end_distance_m": 1071.0,
   "midpoint_distance_m": 1021.0,
   "start_elevation_m": 191.42781188578778,
   "end_elevation_m": 204.98862993436066,
   "start_xy": [
    513546.0287020263,
    4517142.79151961
   ],
   "end_xy": [
    513512.5865924197,
    4517049.029935595
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -6.224565815317646,
   "start_distance_m": 2353.0,
   "end_distance_m": 2358.0,
   "midpoint_distance_m": 2355.5,
   "start_elevation_m": 291.6836882970206,
   "end_elevation_m": 291.3724600062547,
   "start_xy": [
    513578.47034907056,
    4515930.197588692
   ],
   "end_xy": [
    513577.7159791304,
    4515925.256758556
   ]
  },
  "min_10m": {
   "gradient_pct": -5.907564220151471,
   "start_distance_m": 2353.0,
   "end_distance_m": 2363.0,
   "midpoint_distance_m": 2358.0,
   "start_elevation_m": 291.6836882970206,
   "end_elevation_m": 291.09293187500543,
   "start_xy": [
    513578.47034907056,
    4515930.197588692
   ],
   "end_xy": [
    513576.81883839326,
    4515920.33790315
   ]
  },
  "min_20m": {
   "gradient_pct": -5.698927443211517,
   "start_distance_m": 2347.0,
   "end_distance_m": 2367.0,
   "midpoint_distance_m": 2357.0,
   "start_elevation_m": 292.02385169414606,
   "end_elevation_m": 290.88406620550376,
   "start_xy": [
    513579.21857769793,
    4515936.150752046
   ],
   "end_xy": [
    513576.10112580354,
    4515916.402818826
   ]
  },
  "min_25m": {
   "gradient_pct": -5.602058347257525,
   "start_distance_m": 2343.0,
   "end_distance_m": 2368.0,
   "midpoint_distance_m": 2355.5,
   "start_elevation_m": 292.22482372041895,
   "end_elevation_m": 290.8243091336046,
   "start_xy": [
    513579.4982480197,
    4515940.138586697
   ],
   "end_xy": [
    513575.9216976561,
    4515915.419047746
   ]
  },
  "min_50m": {
   "gradient_pct": -4.671448531041619,
   "start_distance_m": 2339.0,
   "end_distance_m": 2389.0,
   "midpoint_distance_m": 2364.0,
   "start_elevation_m": 292.35212524837584,
   "end_elevation_m": 290.01640098285503,
   "start_xy": [
    513579.6920543626,
    4515944.133888827
   ],
   "end_xy": [
    513571.70153954567,
    4515894.854501666
   ]
  },
  "min_100m": {
   "gradient_pct": -3.511282972203901,
   "start_distance_m": 2321.0,
   "end_distance_m": 2421.0,
   "midpoint_distance_m": 2371.0,
   "start_elevation_m": 292.71627159831166,
   "end_elevation_m": 289.20498862610776,
   "start_xy": [
    513579.6992662045,
    4515962.1291105095
   ],
   "end_xy": [
    513562.1499291547,
    4515864.336264588
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 16.284815849971324,
   "start_distance_m": 1784.0,
   "end_distance_m": 1786.0,
   "midpoint_distance_m": 1785.0,
   "start_elevation_m": 270.0016947890651,
   "end_elevation_m": 270.3273911060645,
   "start_xy": [
    513372.8110658825,
    4516392.763951236
   ],
   "end_xy": [
    513374.7226378242,
    4516392.176163773
   ]
  },
  "max_3m": {
   "gradient_pct": 16.140456499338523,
   "start_distance_m": 1783.0,
   "end_distance_m": 1786.0,
   "midpoint_distance_m": 1784.5,
   "start_elevation_m": 269.84317741108435,
   "end_elevation_m": 270.3273911060645,
   "start_xy": [
    513371.85732999904,
    4516393.064596983
   ],
   "end_xy": [
    513374.7226378242,
    4516392.176163773
   ]
  }
 },
 "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": {
  "structure_suppression": {
   "masked_fraction": 0.006,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.192,
   "obstruction_max_height_m": 27.14,
   "flagged_windows_m": [
    2,
    3,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    0.0,
    22.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "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/nj/USGS_1M_18_x51y452_NJ_NW_New_Jersey_6_County_Lidar_2017_B17.tif"
  ],
  "calculated_at": "2026-09-06T01:54:45+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/new-jersey-2026-09-06.osm.pbf",
  "osm_snapshot": "2026-09-04T20:21:21Z",
  "run_id": "nj-run2-260906",
  "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, NJ_NW_New_Jersey_6_County_Lidar_2017_B17 (collected 2017)",
  "elevation_tile_ids": [
   "x51y452"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://s3-us-west-2.amazonaws.com/usgs-lidar-public/NJ_NW6Co_2017",
   "ept_crs": "EPSG:3857",
   "station_coverage": 0.997,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Mansfield",
  "county": "New Jersey"
 }
}