{
 "ocl_version": "0.1.0",
 "name": "Old Dingmans Road",
 "slug": "old-dingmans-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 35.38282016322256,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 30.0,
   "end_distance_m": 32.0,
   "start_elevation_m": 138.04209017558907,
   "end_elevation_m": 138.74974657885352,
   "min_gradient_pct": -1.296430963706996
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 33.66129859762831,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 30.0,
   "end_distance_m": 33.0,
   "start_elevation_m": 138.04209017558907,
   "end_elevation_m": 139.05192913351792,
   "min_gradient_pct": -0.5820331281682911
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 27.181195632446133,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 30.0,
   "end_distance_m": 35.0,
   "start_elevation_m": 138.04209017558907,
   "end_elevation_m": 139.40114995721137,
   "min_gradient_pct": 0.11770345478396393
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.756550471089156,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 30.0,
   "end_distance_m": 40.0,
   "start_elevation_m": 138.04209017558907,
   "end_elevation_m": 140.51774522269798,
   "min_gradient_pct": 0.5270782165871424
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.817275483667004,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 30.0,
   "end_distance_m": 50.0,
   "start_elevation_m": 138.04209017558907,
   "end_elevation_m": 142.20554527232247,
   "min_gradient_pct": 1.2316370369339324
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.25038281262232,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 30.0,
   "end_distance_m": 55.0,
   "start_elevation_m": 138.04209017558907,
   "end_elevation_m": 143.10468587874465,
   "min_gradient_pct": 1.42116956750192
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.366443856649084,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 30.0,
   "end_distance_m": 80.0,
   "start_elevation_m": 138.04209017558907,
   "end_elevation_m": 147.7253121039136,
   "min_gradient_pct": 1.7379484041315436
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.71171409236331,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 29.0,
   "end_distance_m": 129.0,
   "start_elevation_m": 137.89753440575083,
   "end_elevation_m": 155.60924849811414,
   "min_gradient_pct": 3.3706070454115604
  }
 ],
 "shape": {
  "ascent_concentration": 0.414,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 183.0,
  "shape_class": "sustained"
 },
 "length_m": 1148.9999999998952,
 "start_elevation_m": 134.37248625076407,
 "end_elevation_m": 225.36029651396245,
 "endpoint_gain_m": 90.98781026319838,
 "overall_gradient_pct": 7.918869474604586,
 "accumulated_ascent_m": 91.034247056455,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 27.181195632446133,
   "start_distance_m": 30.0,
   "end_distance_m": 35.0,
   "midpoint_distance_m": 32.5,
   "start_elevation_m": 138.04209017558907,
   "end_elevation_m": 139.40114995721137,
   "start_xy": [
    512029.62480117584,
    4563073.016214281
   ],
   "end_xy": [
    512034.6244347051,
    4563073.076749994
   ]
  },
  "max_10m": {
   "gradient_pct": 24.756550471089156,
   "start_distance_m": 30.0,
   "end_distance_m": 40.0,
   "midpoint_distance_m": 35.0,
   "start_elevation_m": 138.04209017558907,
   "end_elevation_m": 140.51774522269798,
   "start_xy": [
    512029.62480117584,
    4563073.016214281
   ],
   "end_xy": [
    512039.62406823447,
    4563073.137285708
   ]
  },
  "max_20m": {
   "gradient_pct": 20.817275483667004,
   "start_distance_m": 30.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 40.0,
   "start_elevation_m": 138.04209017558907,
   "end_elevation_m": 142.20554527232247,
   "start_xy": [
    512029.62480117584,
    4563073.016214281
   ],
   "end_xy": [
    512049.6233352931,
    4563073.258357135
   ]
  },
  "max_25m": {
   "gradient_pct": 20.25038281262232,
   "start_distance_m": 30.0,
   "end_distance_m": 55.0,
   "midpoint_distance_m": 42.5,
   "start_elevation_m": 138.04209017558907,
   "end_elevation_m": 143.10468587874465,
   "start_xy": [
    512029.62480117584,
    4563073.016214281
   ],
   "end_xy": [
    512054.62296882237,
    4563073.318892849
   ]
  },
  "max_50m": {
   "gradient_pct": 19.366443856649084,
   "start_distance_m": 30.0,
   "end_distance_m": 80.0,
   "midpoint_distance_m": 55.0,
   "start_elevation_m": 138.04209017558907,
   "end_elevation_m": 147.7253121039136,
   "start_xy": [
    512029.62480117584,
    4563073.016214281
   ],
   "end_xy": [
    512079.6211364689,
    4563073.621571416
   ]
  },
  "max_100m": {
   "gradient_pct": 17.71171409236331,
   "start_distance_m": 29.0,
   "end_distance_m": 129.0,
   "midpoint_distance_m": 79.0,
   "start_elevation_m": 137.89753440575083,
   "end_elevation_m": 155.60924849811414,
   "start_xy": [
    512028.62487447,
    4563073.004107138
   ],
   "end_xy": [
    512127.64693611604,
    4563082.795086594
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.11770345478396393,
   "start_distance_m": 1143.0,
   "end_distance_m": 1148.0,
   "midpoint_distance_m": 1145.5,
   "start_elevation_m": 225.34864940638053,
   "end_elevation_m": 225.35453457911973,
   "start_xy": [
    513107.74537446164,
    4563130.926042738
   ],
   "end_xy": [
    513112.5993196753,
    4563129.726369507
   ]
  },
  "min_10m": {
   "gradient_pct": 0.5270782165871424,
   "start_distance_m": 1139.0,
   "end_distance_m": 1149.0,
   "midpoint_distance_m": 1144.0,
   "start_elevation_m": 225.30758869230374,
   "end_elevation_m": 225.36029651396245,
   "start_xy": [
    513103.8622182906,
    4563131.885781324
   ],
   "end_xy": [
    513113.57010871795,
    4563129.48643486
   ]
  },
  "min_20m": {
   "gradient_pct": 1.2316370369339324,
   "start_distance_m": 1129.0,
   "end_distance_m": 1149.0,
   "midpoint_distance_m": 1139.0,
   "start_elevation_m": 225.11396910657567,
   "end_elevation_m": 225.36029651396245,
   "start_xy": [
    513094.15432786325,
    4563134.285127786
   ],
   "end_xy": [
    513113.57010871795,
    4563129.48643486
   ]
  },
  "min_25m": {
   "gradient_pct": 1.42116956750192,
   "start_distance_m": 1124.0,
   "end_distance_m": 1149.0,
   "midpoint_distance_m": 1136.5,
   "start_elevation_m": 225.00500412208697,
   "end_elevation_m": 225.36029651396245,
   "start_xy": [
    513089.3003826496,
    4563135.484801018
   ],
   "end_xy": [
    513113.57010871795,
    4563129.48643486
   ]
  },
  "min_50m": {
   "gradient_pct": 1.7379484041315436,
   "start_distance_m": 1099.0,
   "end_distance_m": 1149.0,
   "midpoint_distance_m": 1124.0,
   "start_elevation_m": 224.49132231189668,
   "end_elevation_m": 225.36029651396245,
   "start_xy": [
    513065.0395152556,
    4563141.518859903
   ],
   "end_xy": [
    513113.57010871795,
    4563129.48643486
   ]
  },
  "min_100m": {
   "gradient_pct": 3.3706070454115604,
   "start_distance_m": 662.0,
   "end_distance_m": 762.0,
   "midpoint_distance_m": 712.0,
   "start_elevation_m": 195.6303744515978,
   "end_elevation_m": 199.00098149700935,
   "start_xy": [
    512648.3418751523,
    4563174.282074594
   ],
   "end_xy": [
    512743.0241100242,
    4563143.913403185
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 35.38282016322256,
   "start_distance_m": 30.0,
   "end_distance_m": 32.0,
   "midpoint_distance_m": 31.0,
   "start_elevation_m": 138.04209017558907,
   "end_elevation_m": 138.74974657885352,
   "start_xy": [
    512029.62480117584,
    4563073.016214281
   ],
   "end_xy": [
    512031.62465458753,
    4563073.040428567
   ]
  },
  "max_3m": {
   "gradient_pct": 33.66129859762831,
   "start_distance_m": 30.0,
   "end_distance_m": 33.0,
   "midpoint_distance_m": 31.5,
   "start_elevation_m": 138.04209017558907,
   "end_elevation_m": 139.05192913351792,
   "start_xy": [
    512029.62480117584,
    4563073.016214281
   ],
   "end_xy": [
    512032.62458129344,
    4563073.052535709
   ]
  }
 },
 "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": 0.185,
   "obstruction_max_height_m": 29.58,
   "flagged_windows_m": [
    2,
    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_x51y457_NJ_NW_New_Jersey_6_County_Lidar_2017_B17.tif"
  ],
  "calculated_at": "2026-09-06T02:33:20+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": [
   "x51y457"
  ],
  "route_summit_trim_m": 1281.3,
  "route_summit_trim_loss_m": 37.5,
  "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": "Sandyston",
  "county": "New Jersey"
 }
}