{
 "ocl_version": "0.1.0",
 "name": "Winterview Road",
 "slug": "winterview-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 23.361568428516932,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 470.0,
   "end_distance_m": 472.0,
   "start_elevation_m": 217.12780033271164,
   "end_elevation_m": 217.59503170128198,
   "min_gradient_pct": -3.8370377386968357
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 23.176280590674498,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 470.0,
   "end_distance_m": 473.0,
   "start_elevation_m": 217.12780033271164,
   "end_elevation_m": 217.82308875043188,
   "min_gradient_pct": -3.8566654434030547
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.937248604177967,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 470.0,
   "end_distance_m": 475.0,
   "start_elevation_m": 217.12780033271164,
   "end_elevation_m": 218.27466276292054,
   "min_gradient_pct": -3.667317758461195
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.437759382496836,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 465.0,
   "end_distance_m": 475.0,
   "start_elevation_m": 216.03088682467086,
   "end_elevation_m": 218.27466276292054,
   "min_gradient_pct": -3.4277126805608304
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.037188617738508,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 458.0,
   "end_distance_m": 478.0,
   "start_elevation_m": 214.5207462099952,
   "end_elevation_m": 218.9281839335429,
   "min_gradient_pct": -2.698820501779835
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.846250291049614,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 455.0,
   "end_distance_m": 480.0,
   "start_elevation_m": 213.88398186461706,
   "end_elevation_m": 219.34554443737946,
   "min_gradient_pct": -2.3906258261467883
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.92584685835675,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 442.0,
   "end_distance_m": 492.0,
   "start_elevation_m": 211.26749297521962,
   "end_elevation_m": 221.730416404398,
   "min_gradient_pct": -1.7483650259895285
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.74707806244885,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 415.0,
   "end_distance_m": 515.0,
   "start_elevation_m": 206.8370905547926,
   "end_elevation_m": 225.58416861724146,
   "min_gradient_pct": 0.34706409373936253
  }
 ],
 "shape": {
  "ascent_concentration": 0.516,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 194.0,
  "shape_class": "stepped"
 },
 "length_m": 557.4924403041334,
 "start_elevation_m": 184.80804924511705,
 "end_elevation_m": 230.61504783936425,
 "endpoint_gain_m": 45.806998594247204,
 "overall_gradient_pct": 8.21661340721638,
 "accumulated_ascent_m": 46.75271812979193,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.937248604177967,
   "start_distance_m": 470.0,
   "end_distance_m": 475.0,
   "midpoint_distance_m": 472.5,
   "start_elevation_m": 217.12780033271164,
   "end_elevation_m": 218.27466276292054,
   "start_xy": [
    508447.71088595974,
    4503018.355742677
   ],
   "end_xy": [
    508451.9533266476,
    4503021.001814674
   ]
  },
  "max_10m": {
   "gradient_pct": 22.437759382496836,
   "start_distance_m": 465.0,
   "end_distance_m": 475.0,
   "midpoint_distance_m": 470.0,
   "start_elevation_m": 216.03088682467086,
   "end_elevation_m": 218.27466276292054,
   "start_xy": [
    508443.46844527195,
    4503015.709670681
   ],
   "end_xy": [
    508451.9533266476,
    4503021.001814674
   ]
  },
  "max_20m": {
   "gradient_pct": 22.037188617738508,
   "start_distance_m": 458.0,
   "end_distance_m": 478.0,
   "midpoint_distance_m": 468.0,
   "start_elevation_m": 214.5207462099952,
   "end_elevation_m": 218.9281839335429,
   "start_xy": [
    508437.67777330533,
    4503011.789981787
   ],
   "end_xy": [
    508454.56011433876,
    4503022.484476791
   ]
  },
  "max_25m": {
   "gradient_pct": 21.846250291049614,
   "start_distance_m": 455.0,
   "end_distance_m": 480.0,
   "midpoint_distance_m": 467.5,
   "start_elevation_m": 213.88398186461706,
   "end_elevation_m": 219.34554443737946,
   "start_xy": [
    508435.29308581236,
    4503009.969744011
   ],
   "end_xy": [
    508456.3143218392,
    4503023.445077151
   ]
  },
  "max_50m": {
   "gradient_pct": 20.92584685835675,
   "start_distance_m": 442.0,
   "end_distance_m": 492.0,
   "midpoint_distance_m": 467.0,
   "start_elevation_m": 211.26749297521962,
   "end_elevation_m": 221.730416404398,
   "start_xy": [
    508424.0654926601,
    4503003.509484911
   ],
   "end_xy": [
    508466.59366481524,
    4503029.6294817915
   ]
  },
  "max_100m": {
   "gradient_pct": 18.74707806244885,
   "start_distance_m": 415.0,
   "end_distance_m": 515.0,
   "midpoint_distance_m": 465.0,
   "start_elevation_m": 206.8370905547926,
   "end_elevation_m": 225.58416861724146,
   "start_xy": [
    508399.9161954617,
    4502991.45410709
   ],
   "end_xy": [
    508486.127064393,
    4503041.771708586
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -3.667317758461195,
   "start_distance_m": 10.0,
   "end_distance_m": 15.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 184.61527374158982,
   "end_elevation_m": 184.43190785366676,
   "start_xy": [
    508320.82166863035,
    4502781.010746942
   ],
   "end_xy": [
    508325.5999121374,
    4502782.483292013
   ]
  },
  "min_10m": {
   "gradient_pct": -3.4277126805608304,
   "start_distance_m": 8.0,
   "end_distance_m": 18.0,
   "midpoint_distance_m": 13.0,
   "start_elevation_m": 184.68108629481452,
   "end_elevation_m": 184.33831502675844,
   "start_xy": [
    508318.8536698389,
    4502780.654643277
   ],
   "end_xy": [
    508328.5113695163,
    4502783.1574637
   ]
  },
  "min_20m": {
   "gradient_pct": -2.698820501779835,
   "start_distance_m": 4.0,
   "end_distance_m": 24.0,
   "midpoint_distance_m": 14.0,
   "start_elevation_m": 184.77175410933518,
   "end_elevation_m": 184.2319900089792,
   "start_xy": [
    508314.9173349195,
    4502779.943821639
   ],
   "end_xy": [
    508334.46819137846,
    4502783.875985308
   ]
  },
  "min_25m": {
   "gradient_pct": -2.3906258261467883,
   "start_distance_m": 1.0,
   "end_distance_m": 26.0,
   "midpoint_distance_m": 13.5,
   "start_elevation_m": 184.80502717421177,
   "end_elevation_m": 184.20737071767508,
   "start_xy": [
    508311.9650837299,
    4502779.41070541
   ],
   "end_xy": [
    508336.4437075816,
    4502784.177689025
   ]
  },
  "min_50m": {
   "gradient_pct": -1.7483650259895285,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 184.80804924511705,
   "end_elevation_m": 183.93386673212228,
   "start_xy": [
    508310.981,
    4502779.233
   ],
   "end_xy": [
    508359.748503981,
    4502789.638550835
   ]
  },
  "min_100m": {
   "gradient_pct": 0.34706409373936253,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 184.80804924511705,
   "end_elevation_m": 185.1551133388564,
   "start_xy": [
    508310.981,
    4502779.233
   ],
   "end_xy": [
    508408.4927678594,
    4502800.196197679
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 23.361568428516932,
   "start_distance_m": 470.0,
   "end_distance_m": 472.0,
   "midpoint_distance_m": 471.0,
   "start_elevation_m": 217.12780033271164,
   "end_elevation_m": 217.59503170128198,
   "start_xy": [
    508447.71088595974,
    4503018.355742677
   ],
   "end_xy": [
    508449.40786223486,
    4503019.414171475
   ]
  },
  "max_3m": {
   "gradient_pct": 23.176280590674498,
   "start_distance_m": 470.0,
   "end_distance_m": 473.0,
   "midpoint_distance_m": 471.5,
   "start_elevation_m": 217.12780033271164,
   "end_elevation_m": 217.82308875043188,
   "start_xy": [
    508447.71088595974,
    4503018.355742677
   ],
   "end_xy": [
    508450.25635037245,
    4503019.943385875
   ]
  }
 },
 "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": 0.413,
   "obstruction_max_height_m": 34.09,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    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/nj/USGS_1M_18_x50y451_NJ_NW_New_Jersey_6_County_Lidar_2017_B17.tif"
  ],
  "calculated_at": "2026-09-06T01:51:37+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": [
   "x50y451"
  ],
  "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": 0.998,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "High Bridge",
  "county": "New Jersey"
 }
}