{
 "ocl_version": "0.1.0",
 "name": "Ohio Avenue",
 "slug": "ohio-avenue",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 24.644862150742597,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 308.0,
   "end_distance_m": 310.0,
   "start_elevation_m": 159.21838464413244,
   "end_elevation_m": 159.7112818871473,
   "min_gradient_pct": -6.5520230648758115
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.176934486016915,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 276.0,
   "end_distance_m": 279.0,
   "start_elevation_m": 153.28636643147323,
   "end_elevation_m": 154.01167446605373,
   "min_gradient_pct": -6.811035580300502
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.83724486464189,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 275.0,
   "end_distance_m": 280.0,
   "start_elevation_m": 153.04002957168098,
   "end_elevation_m": 154.23189181491307,
   "min_gradient_pct": -6.026446303043258
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.588449828251953,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 269.0,
   "end_distance_m": 279.0,
   "start_elevation_m": 151.75282948322854,
   "end_elevation_m": 154.01167446605373,
   "min_gradient_pct": -5.554150518110248
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.9181444184224,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 272.0,
   "end_distance_m": 292.0,
   "start_elevation_m": 152.39994762131943,
   "end_elevation_m": 156.7835765050039,
   "min_gradient_pct": -4.876530494085074
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.820121288633345,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 267.0,
   "end_distance_m": 292.0,
   "start_elevation_m": 151.32854618284557,
   "end_elevation_m": 156.7835765050039,
   "min_gradient_pct": -4.518780788002573
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.71095480604112,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 246.0,
   "end_distance_m": 296.0,
   "start_elevation_m": 147.1416093990007,
   "end_elevation_m": 157.49708680202127,
   "min_gradient_pct": -2.823920944435031
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.791344568053773,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 199.0,
   "end_distance_m": 299.0,
   "start_elevation_m": 140.2789145135124,
   "end_elevation_m": 158.07025908156618,
   "min_gradient_pct": -1.6323216714001205
  }
 ],
 "shape": {
  "ascent_concentration": 0.56,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 90.0,
  "shape_class": "stepped"
 },
 "length_m": 342.0953189112408,
 "start_elevation_m": 136.11057134705578,
 "end_elevation_m": 161.4979834354323,
 "endpoint_gain_m": 25.38741208837652,
 "overall_gradient_pct": 7.421151557751505,
 "accumulated_ascent_m": 27.31494103317206,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.83724486464189,
   "start_distance_m": 275.0,
   "end_distance_m": 280.0,
   "midpoint_distance_m": 277.5,
   "start_elevation_m": 153.04002957168098,
   "end_elevation_m": 154.23189181491307,
   "start_xy": [
    580570.6380363408,
    4552434.058180777
   ],
   "end_xy": [
    580575.6378608254,
    4552434.01628659
   ]
  },
  "max_10m": {
   "gradient_pct": 22.588449828251953,
   "start_distance_m": 269.0,
   "end_distance_m": 279.0,
   "midpoint_distance_m": 274.0,
   "start_elevation_m": 151.75282948322854,
   "end_elevation_m": 154.01167446605373,
   "start_xy": [
    580564.6382469593,
    4552434.108453803
   ],
   "end_xy": [
    580574.6378959286,
    4552434.024665427
   ]
  },
  "max_20m": {
   "gradient_pct": 21.9181444184224,
   "start_distance_m": 272.0,
   "end_distance_m": 292.0,
   "midpoint_distance_m": 282.0,
   "start_elevation_m": 152.39994762131943,
   "end_elevation_m": 156.7835765050039,
   "start_xy": [
    580567.63814165,
    4552434.08331729
   ],
   "end_xy": [
    580587.6374395886,
    4552433.915740539
   ]
  },
  "max_25m": {
   "gradient_pct": 21.820121288633345,
   "start_distance_m": 267.0,
   "end_distance_m": 292.0,
   "midpoint_distance_m": 279.5,
   "start_elevation_m": 151.32854618284557,
   "end_elevation_m": 156.7835765050039,
   "start_xy": [
    580562.6383171654,
    4552434.125211478
   ],
   "end_xy": [
    580587.6374395886,
    4552433.915740539
   ]
  },
  "max_50m": {
   "gradient_pct": 20.71095480604112,
   "start_distance_m": 246.0,
   "end_distance_m": 296.0,
   "midpoint_distance_m": 271.0,
   "start_elevation_m": 147.1416093990007,
   "end_elevation_m": 157.49708680202127,
   "start_xy": [
    580541.6390543301,
    4552434.301167066
   ],
   "end_xy": [
    580591.6372991762,
    4552433.882225189
   ]
  },
  "max_100m": {
   "gradient_pct": 17.791344568053773,
   "start_distance_m": 199.0,
   "end_distance_m": 299.0,
   "midpoint_distance_m": 249.0,
   "start_elevation_m": 140.2789145135124,
   "end_elevation_m": 158.07025908156618,
   "start_xy": [
    580494.7441621955,
    4552432.011066093
   ],
   "end_xy": [
    580594.637193867,
    4552433.857088677
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -6.026446303043258,
   "start_distance_m": 9.0,
   "end_distance_m": 14.0,
   "midpoint_distance_m": 11.5,
   "start_elevation_m": 135.89238240339873,
   "end_elevation_m": 135.59106008824656,
   "start_xy": [
    580305.4371731646,
    4552415.797987914
   ],
   "end_xy": [
    580310.4189360338,
    4552416.224647867
   ]
  },
  "min_10m": {
   "gradient_pct": -5.554150518110248,
   "start_distance_m": 9.0,
   "end_distance_m": 19.0,
   "midpoint_distance_m": 14.0,
   "start_elevation_m": 135.89238240339873,
   "end_elevation_m": 135.3369673515877,
   "start_xy": [
    580305.4371731646,
    4552415.797987914
   ],
   "end_xy": [
    580315.400698903,
    4552416.6513078185
   ]
  },
  "min_20m": {
   "gradient_pct": -4.876530494085074,
   "start_distance_m": 6.0,
   "end_distance_m": 26.0,
   "midpoint_distance_m": 16.0,
   "start_elevation_m": 136.01317954432332,
   "end_elevation_m": 135.0378734455063,
   "start_xy": [
    580302.448115443,
    4552415.541991943
   ],
   "end_xy": [
    580322.37516692,
    4552417.248631751
   ]
  },
  "min_25m": {
   "gradient_pct": -4.518780788002573,
   "start_distance_m": 6.0,
   "end_distance_m": 31.0,
   "midpoint_distance_m": 18.5,
   "start_elevation_m": 136.01317954432332,
   "end_elevation_m": 134.88348434732268,
   "start_xy": [
    580302.448115443,
    4552415.541991943
   ],
   "end_xy": [
    580327.3569297892,
    4552417.675291703
   ]
  },
  "min_50m": {
   "gradient_pct": -2.823920944435031,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 136.11057134705578,
   "end_elevation_m": 134.69861087483827,
   "start_xy": [
    580296.47,
    4552415.03
   ],
   "end_xy": [
    580346.2876286923,
    4552419.296599521
   ]
  },
  "min_100m": {
   "gradient_pct": -1.6323216714001205,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 136.11057134705578,
   "end_elevation_m": 134.47824967565566,
   "start_xy": [
    580296.47,
    4552415.03
   ],
   "end_xy": [
    580396.1052573847,
    4552423.563199042
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 24.644862150742597,
   "start_distance_m": 308.0,
   "end_distance_m": 310.0,
   "midpoint_distance_m": 309.0,
   "start_elevation_m": 159.21838464413244,
   "end_elevation_m": 159.7112818871473,
   "start_xy": [
    580603.6368779393,
    4552433.781679139
   ],
   "end_xy": [
    580605.6368077332,
    4552433.764921463
   ]
  },
  "max_3m": {
   "gradient_pct": 24.176934486016915,
   "start_distance_m": 276.0,
   "end_distance_m": 279.0,
   "midpoint_distance_m": 277.5,
   "start_elevation_m": 153.28636643147323,
   "end_elevation_m": 154.01167446605373,
   "start_xy": [
    580571.6380012378,
    4552434.04980194
   ],
   "end_xy": [
    580574.6378959286,
    4552434.024665427
   ]
  }
 },
 "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": 0.122,
   "obstruction_max_height_m": 21.85,
   "flagged_windows_m": [
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "descends_at_start"
  ]
 },
 "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_x58y456_NY_SouthEast4County_A22.tif"
  ],
  "calculated_at": "2026-09-06T11:15:01+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-band3.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_SouthEast4County_A22 (collected 2022)",
  "elevation_tile_ids": [
   "x58y456"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://s3-us-west-2.amazonaws.com/usgs-lidar-public/NY_SE4County_1_A22",
   "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": "Ramapo",
  "county": "New York"
 }
}