{
 "ocl_version": "0.1.0",
 "name": "Sliter Hill Road",
 "slug": "sliter-hill-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 21.74602565467012,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 365.0,
   "end_distance_m": 367.0,
   "start_elevation_m": 341.3517993089706,
   "end_elevation_m": 341.786719822064,
   "min_gradient_pct": -6.666283566528364
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.625719687968587,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 365.0,
   "end_distance_m": 368.0,
   "start_elevation_m": 341.3517993089706,
   "end_elevation_m": 342.00057089960967,
   "min_gradient_pct": -6.349590148010975
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.330321671193815,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 363.0,
   "end_distance_m": 368.0,
   "start_elevation_m": 340.93405481605,
   "end_elevation_m": 342.00057089960967,
   "min_gradient_pct": -6.253405169724147
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.033204149059657,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 360.0,
   "end_distance_m": 370.0,
   "start_elevation_m": 340.3085692127719,
   "end_elevation_m": 342.41188962767785,
   "min_gradient_pct": -6.187883177262847
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.839259229253173,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 359.0,
   "end_distance_m": 379.0,
   "start_elevation_m": 340.10827804062814,
   "end_elevation_m": 344.27612988647877,
   "min_gradient_pct": -5.9883915896188
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.681874855272554,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 359.0,
   "end_distance_m": 384.0,
   "start_elevation_m": 340.10827804062814,
   "end_elevation_m": 345.2787467544463,
   "min_gradient_pct": -5.9346625449477415
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.94443482319923,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 347.0,
   "end_distance_m": 397.0,
   "start_elevation_m": 337.8127910458018,
   "end_elevation_m": 347.78500845740143,
   "min_gradient_pct": -5.179962317178251
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.50318314852052,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 829.0,
   "end_distance_m": 929.0,
   "start_elevation_m": 406.39628798917386,
   "end_elevation_m": 424.8994711376944,
   "min_gradient_pct": -4.188239268203745
  }
 ],
 "shape": {
  "ascent_concentration": 0.441,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 496.0,
  "shape_class": "sustained"
 },
 "length_m": 2904.2311913890658,
 "start_elevation_m": 286.67962789551007,
 "end_elevation_m": 519.9162290513946,
 "endpoint_gain_m": 233.2366011558845,
 "overall_gradient_pct": 8.030924047900253,
 "accumulated_ascent_m": 242.9267530068991,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.330321671193815,
   "start_distance_m": 363.0,
   "end_distance_m": 368.0,
   "midpoint_distance_m": 365.5,
   "start_elevation_m": 340.93405481605,
   "end_elevation_m": 342.00057089960967,
   "start_xy": [
    313311.7008580395,
    4724233.576078116
   ],
   "end_xy": [
    313307.87900073227,
    4724236.799958809
   ]
  },
  "max_10m": {
   "gradient_pct": 21.033204149059657,
   "start_distance_m": 360.0,
   "end_distance_m": 370.0,
   "midpoint_distance_m": 365.0,
   "start_elevation_m": 340.3085692127719,
   "end_elevation_m": 342.41188962767785,
   "start_xy": [
    313313.99397242384,
    4724231.6417497005
   ],
   "end_xy": [
    313306.3502578094,
    4724238.089511086
   ]
  },
  "max_20m": {
   "gradient_pct": 20.839259229253173,
   "start_distance_m": 359.0,
   "end_distance_m": 379.0,
   "midpoint_distance_m": 369.0,
   "start_elevation_m": 340.10827804062814,
   "end_elevation_m": 344.27612988647877,
   "start_xy": [
    313314.7583438853,
    4724230.996973562
   ],
   "end_xy": [
    313299.47091465635,
    4724243.892496334
   ]
  },
  "max_25m": {
   "gradient_pct": 20.681874855272554,
   "start_distance_m": 359.0,
   "end_distance_m": 384.0,
   "midpoint_distance_m": 371.5,
   "start_elevation_m": 340.10827804062814,
   "end_elevation_m": 345.2787467544463,
   "start_xy": [
    313314.7583438853,
    4724230.996973562
   ],
   "end_xy": [
    313295.64905734913,
    4724247.116377027
   ]
  },
  "max_50m": {
   "gradient_pct": 19.94443482319923,
   "start_distance_m": 347.0,
   "end_distance_m": 397.0,
   "midpoint_distance_m": 372.0,
   "start_elevation_m": 337.8127910458018,
   "end_elevation_m": 347.78500845740143,
   "start_xy": [
    313323.9308014226,
    4724223.2596598985
   ],
   "end_xy": [
    313285.71222835034,
    4724255.498466829
   ]
  },
  "max_100m": {
   "gradient_pct": 18.50318314852052,
   "start_distance_m": 829.0,
   "end_distance_m": 929.0,
   "midpoint_distance_m": 879.0,
   "start_elevation_m": 406.39628798917386,
   "end_elevation_m": 424.8994711376944,
   "start_xy": [
    312976.1854042156,
    4724539.959404967
   ],
   "end_xy": [
    312880.5446217376,
    4724568.4466369245
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -6.253405169724147,
   "start_distance_m": 1150.0,
   "end_distance_m": 1155.0,
   "midpoint_distance_m": 1152.5,
   "start_elevation_m": 430.9815201161338,
   "end_elevation_m": 430.6688498576476,
   "start_xy": [
    312697.2931391088,
    4724688.300654502
   ],
   "end_xy": [
    312694.43471826985,
    4724692.403023367
   ]
  },
  "min_10m": {
   "gradient_pct": -6.187883177262847,
   "start_distance_m": 1145.0,
   "end_distance_m": 1155.0,
   "midpoint_distance_m": 1150.0,
   "start_elevation_m": 431.2876381753739,
   "end_elevation_m": 430.6688498576476,
   "start_xy": [
    312700.1515599478,
    4724684.1982856365
   ],
   "end_xy": [
    312694.43471826985,
    4724692.403023367
   ]
  },
  "min_20m": {
   "gradient_pct": -5.9883915896188,
   "start_distance_m": 1143.0,
   "end_distance_m": 1163.0,
   "midpoint_distance_m": 1153.0,
   "start_elevation_m": 431.39506863916085,
   "end_elevation_m": 430.1973903212371,
   "start_xy": [
    312701.2949282834,
    4724682.55733809
   ],
   "end_xy": [
    312689.86124492745,
    4724698.966813551
   ]
  },
  "min_25m": {
   "gradient_pct": -5.9346625449477415,
   "start_distance_m": 1138.0,
   "end_distance_m": 1163.0,
   "midpoint_distance_m": 1150.5,
   "start_elevation_m": 431.68105595747403,
   "end_elevation_m": 430.1973903212371,
   "start_xy": [
    312704.4944145377,
    4724678.768301978
   ],
   "end_xy": [
    312689.86124492745,
    4724698.966813551
   ]
  },
  "min_50m": {
   "gradient_pct": -5.179962317178251,
   "start_distance_m": 1123.0,
   "end_distance_m": 1173.0,
   "midpoint_distance_m": 1148.0,
   "start_elevation_m": 432.37678769195225,
   "end_elevation_m": 429.7868065333631,
   "start_xy": [
    312716.0318769551,
    4724669.18253331
   ],
   "end_xy": [
    312684.1444032495,
    4724707.1715512825
   ]
  },
  "min_100m": {
   "gradient_pct": -4.188239268203745,
   "start_distance_m": 1082.0,
   "end_distance_m": 1182.0,
   "midpoint_distance_m": 1132.0,
   "start_elevation_m": 433.7199708398102,
   "end_elevation_m": 429.53173157160643,
   "start_xy": [
    312747.58314368734,
    4724643.0017548315
   ],
   "end_xy": [
    312678.99924573937,
    4724714.555815239
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 21.74602565467012,
   "start_distance_m": 365.0,
   "end_distance_m": 367.0,
   "midpoint_distance_m": 366.0,
   "start_elevation_m": 341.3517993089706,
   "end_elevation_m": 341.786719822064,
   "start_xy": [
    313310.1721151166,
    4724234.865630393
   ],
   "end_xy": [
    313308.64337219374,
    4724236.155182671
   ]
  },
  "max_3m": {
   "gradient_pct": 21.625719687968587,
   "start_distance_m": 365.0,
   "end_distance_m": 368.0,
   "midpoint_distance_m": 366.5,
   "start_elevation_m": 341.3517993089706,
   "end_elevation_m": 342.00057089960967,
   "start_xy": [
    313310.1721151166,
    4724234.865630393
   ],
   "end_xy": [
    313307.87900073227,
    4724236.799958809
   ]
  }
 },
 "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": 0.166,
   "obstruction_max_height_m": 25.32,
   "flagged_windows_m": [
    50
   ]
  },
  "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/ny/USGS_1M_18_x31y473_NY_FEMAR2_Central_2018_D19.tif"
  ],
  "calculated_at": "2026-09-06T11:15:30+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": [
   "x31y473"
  ],
  "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": "Italy",
  "county": "New York"
 }
}