{
 "ocl_version": "0.1.0",
 "name": "Dug Road",
 "slug": "dug-road-2",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 47.55487075553333,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 338.0,
   "end_distance_m": 340.0,
   "start_elevation_m": 358.3558782921382,
   "end_elevation_m": 359.30697570724885,
   "min_gradient_pct": -10.633985818228098
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 46.47086216316249,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 338.0,
   "end_distance_m": 341.0,
   "start_elevation_m": 358.3558782921382,
   "end_elevation_m": 359.75000415703306,
   "min_gradient_pct": -9.070884035113144
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 45.32807982988402,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 338.0,
   "end_distance_m": 343.0,
   "start_elevation_m": 358.3558782921382,
   "end_elevation_m": 360.6222822836324,
   "min_gradient_pct": -8.092145856227262
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 43.184543968234266,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 337.0,
   "end_distance_m": 347.0,
   "start_elevation_m": 357.9198432672033,
   "end_elevation_m": 362.23829766402673,
   "min_gradient_pct": -5.3314522735399805
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 40.01714905738794,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 331.0,
   "end_distance_m": 351.0,
   "start_elevation_m": 355.8344371395648,
   "end_elevation_m": 363.8378669510424,
   "min_gradient_pct": -1.7854240086464301
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 36.27256071062061,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 328.0,
   "end_distance_m": 353.0,
   "start_elevation_m": 355.12966050963854,
   "end_elevation_m": 364.1978006872937,
   "min_gradient_pct": -0.9675459988745843,
   "lateral_min_pct": 35.98,
   "lateral_max_pct": 36.42
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 26.404440031105423,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 328.0,
   "end_distance_m": 378.0,
   "start_elevation_m": 355.12966050963854,
   "end_elevation_m": 368.33188052519125,
   "min_gradient_pct": 0.8673305543829883
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 22.836490735715362,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1428.0,
   "end_distance_m": 1528.0,
   "start_elevation_m": 505.9929767411457,
   "end_elevation_m": 528.829467476861,
   "min_gradient_pct": 1.7489079904426603
  }
 ],
 "shape": {
  "ascent_concentration": 0.373,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 380.0,
  "shape_class": "sustained"
 },
 "length_m": 1578.6968545309792,
 "start_elevation_m": 345.36463038819954,
 "end_elevation_m": 535.0148197882212,
 "endpoint_gain_m": 189.65018940002165,
 "overall_gradient_pct": 12.013084643559734,
 "accumulated_ascent_m": 190.18402436419888,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 45.32807982988402,
   "start_distance_m": 338.0,
   "end_distance_m": 343.0,
   "midpoint_distance_m": 340.5,
   "start_elevation_m": 358.3558782921382,
   "end_elevation_m": 360.6222822836324,
   "start_xy": [
    320918.22106479696,
    4679265.11141079
   ],
   "end_xy": [
    320922.989534361,
    4679263.607516506
   ]
  },
  "max_10m": {
   "gradient_pct": 43.184543968234266,
   "start_distance_m": 337.0,
   "end_distance_m": 347.0,
   "midpoint_distance_m": 342.0,
   "start_elevation_m": 357.9198432672033,
   "end_elevation_m": 362.23829766402673,
   "start_xy": [
    320917.3046967831,
    4679265.50628161
   ],
   "end_xy": [
    320926.80431001226,
    4679262.404401079
   ]
  },
  "max_20m": {
   "gradient_pct": 40.01714905738794,
   "start_distance_m": 331.0,
   "end_distance_m": 351.0,
   "midpoint_distance_m": 341.0,
   "start_elevation_m": 355.8344371395648,
   "end_elevation_m": 363.8378669510424,
   "start_xy": [
    320911.9014932953,
    4679268.11499625
   ],
   "end_xy": [
    320930.75567707664,
    4679261.8783707125
   ]
  },
  "max_25m": {
   "gradient_pct": 36.27256071062061,
   "start_distance_m": 328.0,
   "end_distance_m": 353.0,
   "midpoint_distance_m": 340.5,
   "start_elevation_m": 355.12966050963854,
   "end_elevation_m": 364.1978006872937,
   "start_xy": [
    320909.19989155146,
    4679269.419353569
   ],
   "end_xy": [
    320932.7471054182,
    4679261.693402714
   ]
  },
  "max_50m": {
   "gradient_pct": 26.404440031105423,
   "start_distance_m": 328.0,
   "end_distance_m": 378.0,
   "midpoint_distance_m": 353.0,
   "start_elevation_m": 355.12966050963854,
   "end_elevation_m": 368.33188052519125,
   "start_xy": [
    320909.19989155146,
    4679269.419353569
   ],
   "end_xy": [
    320957.0480785481,
    4679267.248830293
   ]
  },
  "max_100m": {
   "gradient_pct": 22.836490735715362,
   "start_distance_m": 1428.0,
   "end_distance_m": 1528.0,
   "midpoint_distance_m": 1478.0,
   "start_elevation_m": 505.9929767411457,
   "end_elevation_m": 528.829467476861,
   "start_xy": [
    321941.5137358523,
    4679099.776316357
   ],
   "end_xy": [
    322041.2564647115,
    4679103.689187217
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -8.092145856227262,
   "start_distance_m": 313.0,
   "end_distance_m": 318.0,
   "midpoint_distance_m": 315.5,
   "start_elevation_m": 355.0706261959787,
   "end_elevation_m": 354.66601890316736,
   "start_xy": [
    320896.3296954858,
    4679277.092616961
   ],
   "end_xy": [
    320900.5609770575,
    4679274.428737035
   ]
  },
  "min_10m": {
   "gradient_pct": -5.3314522735399805,
   "start_distance_m": 309.0,
   "end_distance_m": 319.0,
   "midpoint_distance_m": 314.0,
   "start_elevation_m": 355.16308540116654,
   "end_elevation_m": 354.62994017381254,
   "start_xy": [
    320892.9395187191,
    4679279.125500077
   ],
   "end_xy": [
    320901.4072333718,
    4679273.89596105
   ]
  },
  "min_20m": {
   "gradient_pct": -1.7854240086464301,
   "start_distance_m": 303.0,
   "end_distance_m": 323.0,
   "midpoint_distance_m": 313.0,
   "start_elevation_m": 355.039154595997,
   "end_elevation_m": 354.6820697942677,
   "start_xy": [
    320887.5554408816,
    4679276.477537495
   ],
   "end_xy": [
    320904.79225862917,
    4679271.76485711
   ]
  },
  "min_25m": {
   "gradient_pct": -0.9675459988745843,
   "start_distance_m": 299.0,
   "end_distance_m": 324.0,
   "midpoint_distance_m": 311.5,
   "start_elevation_m": 354.9456546598451,
   "end_elevation_m": 354.70376816012646,
   "start_xy": [
    320883.96605565655,
    4679274.712229107
   ],
   "end_xy": [
    320905.6385149435,
    4679271.232081124
   ]
  },
  "min_50m": {
   "gradient_pct": 0.8673305543829883,
   "start_distance_m": 274.0,
   "end_distance_m": 324.0,
   "midpoint_distance_m": 299.0,
   "start_elevation_m": 354.27010288293496,
   "end_elevation_m": 354.70376816012646,
   "start_xy": [
    320861.5323980002,
    4679263.679051679
   ],
   "end_xy": [
    320905.6385149435,
    4679271.232081124
   ]
  },
  "min_100m": {
   "gradient_pct": 1.7489079904426603,
   "start_distance_m": 223.0,
   "end_distance_m": 323.0,
   "midpoint_distance_m": 273.0,
   "start_elevation_m": 352.93316180382504,
   "end_elevation_m": 354.6820697942677,
   "start_xy": [
    320815.7677363812,
    4679241.171369725
   ],
   "end_xy": [
    320904.79225862917,
    4679271.76485711
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 47.55487075553333,
   "start_distance_m": 338.0,
   "end_distance_m": 340.0,
   "midpoint_distance_m": 339.0,
   "start_elevation_m": 358.3558782921382,
   "end_elevation_m": 359.30697570724885,
   "start_xy": [
    320918.22106479696,
    4679265.11141079
   ],
   "end_xy": [
    320920.12845262256,
    4679264.509853076
   ]
  },
  "max_3m": {
   "gradient_pct": 46.47086216316249,
   "start_distance_m": 338.0,
   "end_distance_m": 341.0,
   "midpoint_distance_m": 339.5,
   "start_elevation_m": 358.3558782921382,
   "end_elevation_m": 359.75000415703306,
   "start_xy": [
    320918.22106479696,
    4679265.11141079
   ],
   "end_xy": [
    320921.0821465354,
    4679264.20907422
   ]
  }
 },
 "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": 0.581,
   "obstruction_max_height_m": 28.59,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [
   "max5_over_45",
   "max10_over_40"
  ],
  "extent": [
   "may_continue_beyond_end"
  ],
  "lateral_stability": {
   "offsets_m": [
    -1.0,
    -0.5,
    0.0,
    0.5,
    1.0
   ],
   "windows": [
    {
     "window_m": 25,
     "min_pct": 35.98,
     "max_pct": 36.42
    },
    {
     "window_m": 10,
     "min_pct": 42.93,
     "max_pct": 46.62
    },
    {
     "window_m": 5,
     "min_pct": 45.0,
     "max_pct": 51.47
    }
   ]
  }
 },
 "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/ny/USGS_1M_18_x32y468_NY_FEMAR2_Central_2018_D19.tif"
  ],
  "calculated_at": "2026-09-06T13:05:51+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/new-york-2026-09-06-batch-band1.osm.pbf",
  "osm_snapshot": "",
  "run_id": "ny-run3-260906",
  "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, NY_FEMAR2_Central_2018_D19 (collected 2018)",
  "elevation_tile_ids": [
   "x32y468"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://s3-us-west-2.amazonaws.com/usgs-lidar-public/NY_FEMAR2_Central_5_2018",
   "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": "Campbell",
  "county": "New York"
 }
}