{
 "ocl_version": "0.1.0",
 "name": "Truman Drive",
 "slug": "truman-drive",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 16.60067079783012,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 328.0,
   "end_distance_m": 330.0,
   "start_elevation_m": 44.29637655259818,
   "end_elevation_m": 44.628389968554785,
   "min_gradient_pct": -19.354941853372765
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 15.98886028505504,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 327.0,
   "end_distance_m": 330.0,
   "start_elevation_m": 44.148724160003134,
   "end_elevation_m": 44.628389968554785,
   "min_gradient_pct": -17.040395913425737
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 13.116622380898804,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 326.0,
   "end_distance_m": 331.0,
   "start_elevation_m": 44.086309172235275,
   "end_elevation_m": 44.742140291280215,
   "min_gradient_pct": -14.60599556569349
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 11.62728982955798,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1233.0,
   "end_distance_m": 1243.0,
   "start_elevation_m": 116.1868782361669,
   "end_elevation_m": 117.3496072191227,
   "min_gradient_pct": -13.615396022151742
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 11.14138736861527,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1233.0,
   "end_distance_m": 1253.0,
   "start_elevation_m": 116.1868782361669,
   "end_elevation_m": 118.41515570988996,
   "min_gradient_pct": -12.924603488149984
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 11.120995374708741,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1232.0,
   "end_distance_m": 1257.0,
   "start_elevation_m": 116.07117994638713,
   "end_elevation_m": 118.85142879006432,
   "min_gradient_pct": -12.843973024335924
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 10.69969479454494,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1232.0,
   "end_distance_m": 1282.0,
   "start_elevation_m": 116.07117994638713,
   "end_elevation_m": 121.4210273436596,
   "min_gradient_pct": -12.075395788458934
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 10.453529407668114,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1232.0,
   "end_distance_m": 1332.0,
   "start_elevation_m": 116.07117994638713,
   "end_elevation_m": 126.52470935405525,
   "min_gradient_pct": -10.572188852348491
  }
 ],
 "shape": {
  "ascent_concentration": 0.404,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 37.0,
  "shape_class": "sustained"
 },
 "length_m": 2393.049028056141,
 "start_elevation_m": 32.03537868757864,
 "end_elevation_m": 120.35636415886498,
 "endpoint_gain_m": 88.32098547128633,
 "overall_gradient_pct": 3.6907302957778896,
 "accumulated_ascent_m": 118.28402300324429,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 13.116622380898804,
   "start_distance_m": 326.0,
   "end_distance_m": 331.0,
   "midpoint_distance_m": 328.5,
   "start_elevation_m": 44.086309172235275,
   "end_elevation_m": 44.742140291280215,
   "start_xy": [
    588858.1709530953,
    4532845.52780653
   ],
   "end_xy": [
    588861.277183658,
    4532841.60972898
   ]
  },
  "max_10m": {
   "gradient_pct": 11.62728982955798,
   "start_distance_m": 1233.0,
   "end_distance_m": 1243.0,
   "midpoint_distance_m": 1238.0,
   "start_elevation_m": 116.1868782361669,
   "end_elevation_m": 117.3496072191227,
   "start_xy": [
    589335.561007454,
    4532106.645274394
   ],
   "end_xy": [
    589339.4720294089,
    4532097.446502349
   ]
  },
  "max_20m": {
   "gradient_pct": 11.14138736861527,
   "start_distance_m": 1233.0,
   "end_distance_m": 1253.0,
   "midpoint_distance_m": 1243.0,
   "start_elevation_m": 116.1868782361669,
   "end_elevation_m": 118.41515570988996,
   "start_xy": [
    589335.561007454,
    4532106.645274394
   ],
   "end_xy": [
    589342.1860112342,
    4532087.821830789
   ]
  },
  "max_25m": {
   "gradient_pct": 11.120995374708741,
   "start_distance_m": 1232.0,
   "end_distance_m": 1257.0,
   "midpoint_distance_m": 1244.5,
   "start_elevation_m": 116.07117994638713,
   "end_elevation_m": 118.85142879006432,
   "start_xy": [
    589335.1634910584,
    4532107.562869466
   ],
   "end_xy": [
    589343.0117618485,
    4532083.918321587
   ]
  },
  "max_50m": {
   "gradient_pct": 10.69969479454494,
   "start_distance_m": 1232.0,
   "end_distance_m": 1282.0,
   "midpoint_distance_m": 1257.0,
   "start_elevation_m": 116.07117994638713,
   "end_elevation_m": 121.4210273436596,
   "start_xy": [
    589335.1634910584,
    4532107.562869466
   ],
   "end_xy": [
    589344.101345637,
    4532059.030219874
   ]
  },
  "max_100m": {
   "gradient_pct": 10.453529407668114,
   "start_distance_m": 1232.0,
   "end_distance_m": 1332.0,
   "midpoint_distance_m": 1282.0,
   "start_elevation_m": 116.07117994638713,
   "end_elevation_m": 126.52470935405525,
   "start_xy": [
    589335.1634910584,
    4532107.562869466
   ],
   "end_xy": [
    589326.3840652443,
    4532012.899393777
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -14.60599556569349,
   "start_distance_m": 1883.0,
   "end_distance_m": 1888.0,
   "midpoint_distance_m": 1885.5,
   "start_elevation_m": 117.97645304800507,
   "end_elevation_m": 117.2461532697204,
   "start_xy": [
    589061.7382511927,
    4531536.837309349
   ],
   "end_xy": [
    589058.8692519837,
    4531532.742331506
   ]
  },
  "min_10m": {
   "gradient_pct": -13.615396022151742,
   "start_distance_m": 1878.0,
   "end_distance_m": 1888.0,
   "midpoint_distance_m": 1883.0,
   "start_elevation_m": 118.60769287193557,
   "end_elevation_m": 117.2461532697204,
   "start_xy": [
    589064.6072504016,
    4531540.932287193
   ],
   "end_xy": [
    589058.8692519837,
    4531532.742331506
   ]
  },
  "min_20m": {
   "gradient_pct": -12.924603488149984,
   "start_distance_m": 1868.0,
   "end_distance_m": 1888.0,
   "midpoint_distance_m": 1878.0,
   "start_elevation_m": 119.83107396735039,
   "end_elevation_m": 117.2461532697204,
   "start_xy": [
    589070.3452488196,
    4531549.122242879
   ],
   "end_xy": [
    589058.8692519837,
    4531532.742331506
   ]
  },
  "min_25m": {
   "gradient_pct": -12.843973024335924,
   "start_distance_m": 1863.0,
   "end_distance_m": 1888.0,
   "midpoint_distance_m": 1875.5,
   "start_elevation_m": 120.45714652580438,
   "end_elevation_m": 117.2461532697204,
   "start_xy": [
    589073.2142480285,
    4531553.217220723
   ],
   "end_xy": [
    589058.8692519837,
    4531532.742331506
   ]
  },
  "min_50m": {
   "gradient_pct": -12.075395788458934,
   "start_distance_m": 1851.0,
   "end_distance_m": 1901.0,
   "midpoint_distance_m": 1876.0,
   "start_elevation_m": 121.8083124015561,
   "end_elevation_m": 115.77061450732663,
   "start_xy": [
    589080.09984613,
    4531563.045167548
   ],
   "end_xy": [
    589051.4098540404,
    4531522.095389112
   ]
  },
  "min_100m": {
   "gradient_pct": -10.572188852348491,
   "start_distance_m": 1838.0,
   "end_distance_m": 1938.0,
   "midpoint_distance_m": 1888.0,
   "start_elevation_m": 122.98440701971168,
   "end_elevation_m": 112.41221816736319,
   "start_xy": [
    589087.5592440733,
    4531573.692109941
   ],
   "end_xy": [
    589030.1792598942,
    4531491.79255307
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 16.60067079783012,
   "start_distance_m": 328.0,
   "end_distance_m": 330.0,
   "midpoint_distance_m": 329.0,
   "start_elevation_m": 44.29637655259818,
   "end_elevation_m": 44.628389968554785,
   "start_xy": [
    588859.4134453204,
    4532843.96057551
   ],
   "end_xy": [
    588860.6559375455,
    4532842.39334449
   ]
  },
  "max_3m": {
   "gradient_pct": 15.98886028505504,
   "start_distance_m": 327.0,
   "end_distance_m": 330.0,
   "midpoint_distance_m": 328.5,
   "start_elevation_m": 44.148724160003134,
   "end_elevation_m": 44.628389968554785,
   "start_xy": [
    588858.7921992078,
    4532844.74419102
   ],
   "end_xy": [
    588860.6559375455,
    4532842.39334449
   ]
  }
 },
 "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": {
  "review": [],
  "extent": [],
  "suggested_summit_cut_m": 1427.0,
  "trailing_descent_m": 11.9
 },
 "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_one_meter_x58y454_NJ_SdL5_2014.tif"
  ],
  "calculated_at": "2026-09-06T21:18:33+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-wave2-260906",
  "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_SdL5_2014 (collected 2014)",
  "elevation_tile_ids": [
   "x58y454"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 EPT corridor failed: NY_FEMAR2_Central_B1_2018: no corridor points fetched",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Demarest",
  "county": "New Jersey"
 }
}