{
 "ocl_version": "0.1.0",
 "name": "Highview Terrace",
 "slug": "highview-terrace",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 22.00842787152908,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 61.0,
   "end_distance_m": 63.0,
   "start_elevation_m": 300.258861761849,
   "end_elevation_m": 300.6990303192796,
   "min_gradient_pct": 0.5546925786347856
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.65918599569257,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 60.0,
   "end_distance_m": 63.0,
   "start_elevation_m": 300.0492547394088,
   "end_elevation_m": 300.6990303192796,
   "min_gradient_pct": 0.8458382599542347
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.224580006875158,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 58.0,
   "end_distance_m": 63.0,
   "start_elevation_m": 299.63780131893583,
   "end_elevation_m": 300.6990303192796,
   "min_gradient_pct": 0.9522734347331152
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.96451729370642,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 53.0,
   "end_distance_m": 63.0,
   "start_elevation_m": 298.60257858990894,
   "end_elevation_m": 300.6990303192796,
   "min_gradient_pct": 1.0264774852026903
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.62075174783672,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 48.0,
   "end_distance_m": 68.0,
   "start_elevation_m": 297.581340947813,
   "end_elevation_m": 301.7054912973803,
   "min_gradient_pct": 1.8853144012177836
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.420132786041677,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 47.0,
   "end_distance_m": 72.0,
   "start_elevation_m": 297.38199305183036,
   "end_elevation_m": 302.4870262483408,
   "min_gradient_pct": 2.1821672015585136
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.362670649415804,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 21.0,
   "end_distance_m": 71.0,
   "start_elevation_m": 292.6102144404059,
   "end_elevation_m": 302.2915497651138,
   "min_gradient_pct": 4.869968408869909
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.673737748355904,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 35.0,
   "end_distance_m": 135.0,
   "start_elevation_m": 295.1161549857197,
   "end_elevation_m": 313.7898927340756,
   "min_gradient_pct": 11.958248439093154
  }
 ],
 "shape": {
  "ascent_concentration": 0.33,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 165.0,
  "shape_class": "sustained"
 },
 "length_m": 203.99999999996888,
 "start_elevation_m": 289.72139984569765,
 "end_elevation_m": 319.6560392940397,
 "endpoint_gain_m": 29.934639448342068,
 "overall_gradient_pct": 14.673842866836585,
 "accumulated_ascent_m": 29.934639448342068,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.224580006875158,
   "start_distance_m": 58.0,
   "end_distance_m": 63.0,
   "midpoint_distance_m": 60.5,
   "start_elevation_m": 299.63780131893583,
   "end_elevation_m": 300.6990303192796,
   "start_xy": [
    534118.510312737,
    4536269.997281813
   ],
   "end_xy": [
    534113.7757295826,
    4536271.604677954
   ]
  },
  "max_10m": {
   "gradient_pct": 20.96451729370642,
   "start_distance_m": 53.0,
   "end_distance_m": 63.0,
   "midpoint_distance_m": 58.0,
   "start_elevation_m": 298.60257858990894,
   "end_elevation_m": 300.6990303192796,
   "start_xy": [
    534123.2448958914,
    4536268.389885671
   ],
   "end_xy": [
    534113.7757295826,
    4536271.604677954
   ]
  },
  "max_20m": {
   "gradient_pct": 20.62075174783672,
   "start_distance_m": 48.0,
   "end_distance_m": 68.0,
   "midpoint_distance_m": 58.0,
   "start_elevation_m": 297.581340947813,
   "end_elevation_m": 301.7054912973803,
   "start_xy": [
    534128.0270977579,
    4536266.930809568
   ],
   "end_xy": [
    534109.0411464282,
    4536273.212074094
   ]
  },
  "max_25m": {
   "gradient_pct": 20.420132786041677,
   "start_distance_m": 47.0,
   "end_distance_m": 72.0,
   "midpoint_distance_m": 59.5,
   "start_elevation_m": 297.38199305183036,
   "end_elevation_m": 302.4870262483408,
   "start_xy": [
    534128.9841826521,
    4536266.641001863
   ],
   "end_xy": [
    534105.2534799047,
    4536274.497991008
   ]
  },
  "max_50m": {
   "gradient_pct": 19.362670649415804,
   "start_distance_m": 21.0,
   "end_distance_m": 71.0,
   "midpoint_distance_m": 46.0,
   "start_elevation_m": 292.6102144404059,
   "end_elevation_m": 302.2915497651138,
   "start_xy": [
    534153.4180242241,
    4536257.820721837
   ],
   "end_xy": [
    534106.2003965356,
    4536274.176511779
   ]
  },
  "max_100m": {
   "gradient_pct": 18.673737748355904,
   "start_distance_m": 35.0,
   "end_distance_m": 135.0,
   "midpoint_distance_m": 85.0,
   "start_elevation_m": 295.1161549857197,
   "end_elevation_m": 313.7898927340756,
   "start_xy": [
    534140.4169343585,
    4536263.014146747
   ],
   "end_xy": [
    534066.5154457636,
    4536231.528042498
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.9522734347331152,
   "start_distance_m": 194.0,
   "end_distance_m": 199.0,
   "midpoint_distance_m": 196.5,
   "start_elevation_m": 319.55339154551945,
   "end_elevation_m": 319.6010052172561,
   "start_xy": [
    534033.8962430254,
    4536182.403938182
   ],
   "end_xy": [
    534031.0037336485,
    4536178.325532917
   ]
  },
  "min_10m": {
   "gradient_pct": 1.0264774852026903,
   "start_distance_m": 194.0,
   "end_distance_m": 204.0,
   "midpoint_distance_m": 199.0,
   "start_elevation_m": 319.55339154551945,
   "end_elevation_m": 319.6560392940397,
   "start_xy": [
    534033.8962430254,
    4536182.403938182
   ],
   "end_xy": [
    534028.1112242714,
    4536174.247127652
   ]
  },
  "min_20m": {
   "gradient_pct": 1.8853144012177836,
   "start_distance_m": 184.0,
   "end_distance_m": 204.0,
   "midpoint_distance_m": 194.0,
   "start_elevation_m": 319.27897641379616,
   "end_elevation_m": 319.6560392940397,
   "start_xy": [
    534039.6812617796,
    4536190.560748711
   ],
   "end_xy": [
    534028.1112242714,
    4536174.247127652
   ]
  },
  "min_25m": {
   "gradient_pct": 2.1821672015585136,
   "start_distance_m": 179.0,
   "end_distance_m": 204.0,
   "midpoint_distance_m": 191.5,
   "start_elevation_m": 319.1104974936501,
   "end_elevation_m": 319.6560392940397,
   "start_xy": [
    534042.3532702298,
    4536194.783521745
   ],
   "end_xy": [
    534028.1112242714,
    4536174.247127652
   ]
  },
  "min_50m": {
   "gradient_pct": 4.869968408869909,
   "start_distance_m": 154.0,
   "end_distance_m": 204.0,
   "midpoint_distance_m": 179.0,
   "start_elevation_m": 317.22105508960476,
   "end_elevation_m": 319.6560392940397,
   "start_xy": [
    534055.709053601,
    4536215.902578488
   ],
   "end_xy": [
    534028.1112242714,
    4536174.247127652
   ]
  },
  "min_100m": {
   "gradient_pct": 11.958248439093154,
   "start_distance_m": 104.0,
   "end_distance_m": 204.0,
   "midpoint_distance_m": 154.0,
   "start_elevation_m": 307.69779085494656,
   "end_elevation_m": 319.6560392940397,
   "start_xy": [
    534082.9612808907,
    4536257.804563004
   ],
   "end_xy": [
    534028.1112242714,
    4536174.247127652
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 22.00842787152908,
   "start_distance_m": 61.0,
   "end_distance_m": 63.0,
   "midpoint_distance_m": 62.0,
   "start_elevation_m": 300.258861761849,
   "end_elevation_m": 300.6990303192796,
   "start_xy": [
    534115.6695628443,
    4536270.961719497
   ],
   "end_xy": [
    534113.7757295826,
    4536271.604677954
   ]
  },
  "max_3m": {
   "gradient_pct": 21.65918599569257,
   "start_distance_m": 60.0,
   "end_distance_m": 63.0,
   "midpoint_distance_m": 61.5,
   "start_elevation_m": 300.0492547394088,
   "end_elevation_m": 300.6990303192796,
   "start_xy": [
    534116.6164794753,
    4536270.640240269
   ],
   "end_xy": [
    534113.7757295826,
    4536271.604677954
   ]
  }
 },
 "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": 0.371,
   "obstruction_max_height_m": 24.74,
   "flagged_windows_m": [
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "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_x53y454_NJ_NW_New_Jersey_6_County_Lidar_2017_B17.tif"
  ],
  "calculated_at": "2026-09-06T03:54:06+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": [
   "x53y454"
  ],
  "route_summit_trim_m": 235.6,
  "route_summit_trim_loss_m": 14.7,
  "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": 1.0,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Jefferson",
  "county": "New Jersey"
 }
}