{
 "ocl_version": "0.1.0",
 "name": "Decker Road",
 "slug": "decker-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 21.192551804986692,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 491.0,
   "end_distance_m": 493.0,
   "start_elevation_m": 172.17532671207078,
   "end_elevation_m": 172.59917774817052,
   "min_gradient_pct": 0.26794429723508983
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.18456749203214,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 490.0,
   "end_distance_m": 493.0,
   "start_elevation_m": 171.96364072340955,
   "end_elevation_m": 172.59917774817052,
   "min_gradient_pct": 0.47462772164408307
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 20.934060318512593,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 488.0,
   "end_distance_m": 493.0,
   "start_elevation_m": 171.5524747322449,
   "end_elevation_m": 172.59917774817052,
   "min_gradient_pct": 0.7315757357213215
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.675991444975068,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 483.0,
   "end_distance_m": 493.0,
   "start_elevation_m": 170.531578603673,
   "end_elevation_m": 172.59917774817052,
   "min_gradient_pct": 0.9004383923563353
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.520215696616617,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 475.0,
   "end_distance_m": 495.0,
   "start_elevation_m": 168.89718492550227,
   "end_elevation_m": 173.0012280648256,
   "min_gradient_pct": 1.1373766993944656
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.432632803200818,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 473.0,
   "end_distance_m": 498.0,
   "start_elevation_m": 168.50416340094898,
   "end_elevation_m": 173.6123216017492,
   "min_gradient_pct": 1.2601934521220528
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.033678528902215,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 446.0,
   "end_distance_m": 496.0,
   "start_elevation_m": 163.18755536923248,
   "end_elevation_m": 173.2043946336836,
   "min_gradient_pct": 1.818102973113838
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.196681940509137,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 413.0,
   "end_distance_m": 513.0,
   "start_elevation_m": 157.21878370305237,
   "end_elevation_m": 176.4154656435615,
   "min_gradient_pct": 4.117390928025642
  }
 ],
 "shape": {
  "ascent_concentration": 0.318,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 266.0,
  "shape_class": "sustained"
 },
 "length_m": 1562.999999999933,
 "start_elevation_m": 126.06043392848936,
 "end_elevation_m": 280.9146922275554,
 "endpoint_gain_m": 154.85425829906603,
 "overall_gradient_pct": 9.907502130458903,
 "accumulated_ascent_m": 154.85425829906603,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 20.934060318512593,
   "start_distance_m": 488.0,
   "end_distance_m": 493.0,
   "midpoint_distance_m": 490.5,
   "start_elevation_m": 171.5524747322449,
   "end_elevation_m": 172.59917774817052,
   "start_xy": [
    489028.58755947714,
    4509046.720118497
   ],
   "end_xy": [
    489032.3819167269,
    4509043.4639162505
   ]
  },
  "max_10m": {
   "gradient_pct": 20.675991444975068,
   "start_distance_m": 483.0,
   "end_distance_m": 493.0,
   "midpoint_distance_m": 488.0,
   "start_elevation_m": 170.531578603673,
   "end_elevation_m": 172.59917774817052,
   "start_xy": [
    489024.79320222745,
    4509049.976320742
   ],
   "end_xy": [
    489032.3819167269,
    4509043.4639162505
   ]
  },
  "max_20m": {
   "gradient_pct": 20.520215696616617,
   "start_distance_m": 475.0,
   "end_distance_m": 495.0,
   "midpoint_distance_m": 485.0,
   "start_elevation_m": 168.89718492550227,
   "end_elevation_m": 173.0012280648256,
   "start_xy": [
    489018.72223062784,
    4509055.186244333
   ],
   "end_xy": [
    489033.92698097904,
    4509042.195985122
   ]
  },
  "max_25m": {
   "gradient_pct": 20.432632803200818,
   "start_distance_m": 473.0,
   "end_distance_m": 498.0,
   "midpoint_distance_m": 485.5,
   "start_elevation_m": 168.50416340094898,
   "end_elevation_m": 173.6123216017492,
   "start_xy": [
    489017.20448772795,
    4509056.488725232
   ],
   "end_xy": [
    489036.3528782892,
    4509040.431042561
   ]
  },
  "max_50m": {
   "gradient_pct": 20.033678528902215,
   "start_distance_m": 446.0,
   "end_distance_m": 496.0,
   "midpoint_distance_m": 471.0,
   "start_elevation_m": 163.18755536923248,
   "end_elevation_m": 173.2043946336836,
   "start_xy": [
    488997.27358961775,
    4509074.664457317
   ],
   "end_xy": [
    489034.7356134157,
    4509041.607670935
   ]
  },
  "max_100m": {
   "gradient_pct": 19.196681940509137,
   "start_distance_m": 413.0,
   "end_distance_m": 513.0,
   "midpoint_distance_m": 463.0,
   "start_elevation_m": 157.21878370305237,
   "end_elevation_m": 176.4154656435615,
   "start_xy": [
    488974.35787657986,
    4509098.410406361
   ],
   "end_xy": [
    489049.09276977065,
    4509032.63348745
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.7315757357213215,
   "start_distance_m": 7.0,
   "end_distance_m": 12.0,
   "midpoint_distance_m": 9.5,
   "start_elevation_m": 126.14917120685764,
   "end_elevation_m": 126.18574999364371,
   "start_xy": [
    488689.48872636585,
    4509387.535640124
   ],
   "end_xy": [
    488693.1013880557,
    4509384.078954498
   ]
  },
  "min_10m": {
   "gradient_pct": 0.9004383923563353,
   "start_distance_m": 7.0,
   "end_distance_m": 17.0,
   "midpoint_distance_m": 12.0,
   "start_elevation_m": 126.14917120685764,
   "end_elevation_m": 126.23921504609328,
   "start_xy": [
    488689.48872636585,
    4509387.535640124
   ],
   "end_xy": [
    488696.7140497456,
    4509380.622268873
   ]
  },
  "min_20m": {
   "gradient_pct": 1.1373766993944656,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 126.06043392848936,
   "end_elevation_m": 126.28790926836825,
   "start_xy": [
    488684.431,
    4509392.375
   ],
   "end_xy": [
    488698.8816467595,
    4509378.548257497
   ]
  },
  "min_25m": {
   "gradient_pct": 1.2601934521220528,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 126.06043392848936,
   "end_elevation_m": 126.37548229151987,
   "start_xy": [
    488684.431,
    4509392.375
   ],
   "end_xy": [
    488702.49430844944,
    4509375.091571872
   ]
  },
  "min_50m": {
   "gradient_pct": 1.818102973113838,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 126.06043392848936,
   "end_elevation_m": 126.96948541504628,
   "start_xy": [
    488684.431,
    4509392.375
   ],
   "end_xy": [
    488720.5576168989,
    4509357.808143743
   ]
  },
  "min_100m": {
   "gradient_pct": 4.117390928025642,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 126.06043392848936,
   "end_elevation_m": 130.177824856515,
   "start_xy": [
    488684.431,
    4509392.375
   ],
   "end_xy": [
    488756.87321064324,
    4509323.441124639
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 21.192551804986692,
   "start_distance_m": 491.0,
   "end_distance_m": 493.0,
   "midpoint_distance_m": 492.0,
   "start_elevation_m": 172.17532671207078,
   "end_elevation_m": 172.59917774817052,
   "start_xy": [
    489030.864173827,
    4509044.766397149
   ],
   "end_xy": [
    489032.3819167269,
    4509043.4639162505
   ]
  },
  "max_3m": {
   "gradient_pct": 21.18456749203214,
   "start_distance_m": 490.0,
   "end_distance_m": 493.0,
   "midpoint_distance_m": 491.5,
   "start_elevation_m": 171.96364072340955,
   "end_elevation_m": 172.59917774817052,
   "start_xy": [
    489030.1053023771,
    4509045.417637598
   ],
   "end_xy": [
    489032.3819167269,
    4509043.4639162505
   ]
  }
 },
 "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": 0.188,
   "obstruction_max_height_m": 29.9,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": []
 },
 "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_x48y451_NJ_NW_New_Jersey_6_County_Lidar_2017_B17.tif"
  ],
  "calculated_at": "2026-09-06T02:34:49+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": [
   "x48y451"
  ],
  "route_summit_trim_m": 140.0,
  "route_summit_trim_loss_m": 8.8,
  "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": 0.978,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Harmony",
  "county": "New Jersey"
 }
}