{
 "ocl_version": "0.1.0",
 "name": "Cortina Lane",
 "slug": "cortina-lane-2",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 33.8059146208451,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 55.0,
   "end_distance_m": 57.0,
   "start_elevation_m": 240.9719397096417,
   "end_elevation_m": 241.6480580020586,
   "min_gradient_pct": -5.563285593649425
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 33.653136435743626,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 55.0,
   "end_distance_m": 58.0,
   "start_elevation_m": 240.9719397096417,
   "end_elevation_m": 241.981533802714,
   "min_gradient_pct": -3.6663895692148194
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 33.167361133618556,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 55.0,
   "end_distance_m": 60.0,
   "start_elevation_m": 240.9719397096417,
   "end_elevation_m": 242.63030776632263,
   "min_gradient_pct": -2.502345572697209
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 26.004212249742125,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 52.0,
   "end_distance_m": 62.0,
   "start_elevation_m": 240.43633646910945,
   "end_elevation_m": 243.03675769408366,
   "min_gradient_pct": 0.7364571016546506
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.698377144447363,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 169.0,
   "end_distance_m": 189.0,
   "start_elevation_m": 260.11780987323726,
   "end_elevation_m": 265.05748530212674,
   "min_gradient_pct": 2.0954220545158364
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 24.443906025216165,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 164.0,
   "end_distance_m": 189.0,
   "start_elevation_m": 258.9465087958227,
   "end_elevation_m": 265.05748530212674,
   "min_gradient_pct": 2.2104561292869676
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 22.29113794906203,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 148.0,
   "end_distance_m": 198.0,
   "start_elevation_m": 255.82001914563327,
   "end_elevation_m": 266.9655881201643,
   "min_gradient_pct": 2.764119099914069
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.96788439226077,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 97.0,
   "end_distance_m": 197.0,
   "start_elevation_m": 245.8017137149252,
   "end_elevation_m": 266.76959810718597,
   "min_gradient_pct": 9.547432218634583
  }
 ],
 "shape": {
  "ascent_concentration": 0.394,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 142.0,
  "shape_class": "sustained"
 },
 "length_m": 338.05173672955493,
 "start_elevation_m": 236.8142792375541,
 "end_elevation_m": 282.63998450782617,
 "endpoint_gain_m": 45.82570527027207,
 "overall_gradient_pct": 13.55582601456449,
 "accumulated_ascent_m": 46.207045502556895,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 33.167361133618556,
   "start_distance_m": 55.0,
   "end_distance_m": 60.0,
   "midpoint_distance_m": 57.5,
   "start_elevation_m": 240.9719397096417,
   "end_elevation_m": 242.63030776632263,
   "start_xy": [
    608853.3901173188,
    4597609.32037884
   ],
   "end_xy": [
    608848.8996775403,
    4597611.519458328
   ]
  },
  "max_10m": {
   "gradient_pct": 26.004212249742125,
   "start_distance_m": 52.0,
   "end_distance_m": 62.0,
   "midpoint_distance_m": 57.0,
   "start_elevation_m": 240.43633646910945,
   "end_elevation_m": 243.03675769408366,
   "start_xy": [
    608856.084381186,
    4597608.0009311475
   ],
   "end_xy": [
    608847.1035016289,
    4597612.399090123
   ]
  },
  "max_20m": {
   "gradient_pct": 24.698377144447363,
   "start_distance_m": 169.0,
   "end_distance_m": 189.0,
   "midpoint_distance_m": 179.0,
   "start_elevation_m": 260.11780987323726,
   "end_elevation_m": 265.05748530212674,
   "start_xy": [
    608782.6944111101,
    4597696.221297585
   ],
   "end_xy": [
    608776.8517312715,
    4597715.348845581
   ]
  },
  "max_25m": {
   "gradient_pct": 24.443906025216165,
   "start_distance_m": 164.0,
   "end_distance_m": 189.0,
   "midpoint_distance_m": 176.5,
   "start_elevation_m": 258.9465087958227,
   "end_elevation_m": 265.05748530212674,
   "start_xy": [
    608784.1550810698,
    4597691.439410587
   ],
   "end_xy": [
    608776.8517312715,
    4597715.348845581
   ]
  },
  "max_50m": {
   "gradient_pct": 22.29113794906203,
   "start_distance_m": 148.0,
   "end_distance_m": 198.0,
   "midpoint_distance_m": 173.0,
   "start_elevation_m": 255.82001914563327,
   "end_elevation_m": 266.9655881201643,
   "start_xy": [
    608793.3660854864,
    4597678.5198702635
   ],
   "end_xy": [
    608770.546452723,
    4597721.693991574
   ]
  },
  "max_100m": {
   "gradient_pct": 20.96788439226077,
   "start_distance_m": 97.0,
   "end_distance_m": 197.0,
   "midpoint_distance_m": 147.0,
   "start_elevation_m": 245.8017137149252,
   "end_elevation_m": 266.76959810718597,
   "start_xy": [
    608822.0293284879,
    4597636.475500265
   ],
   "end_xy": [
    608771.334249914,
    4597721.078056849
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -2.502345572697209,
   "start_distance_m": 38.0,
   "end_distance_m": 43.0,
   "midpoint_distance_m": 40.5,
   "start_elevation_m": 239.4958801925821,
   "end_elevation_m": 239.37076291394723,
   "start_xy": [
    608868.5920215221,
    4597601.713425263
   ],
   "end_xy": [
    608864.153928094,
    4597604.016320555
   ]
  },
  "min_10m": {
   "gradient_pct": 0.7364571016546506,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 236.8142792375541,
   "end_elevation_m": 236.88792494771957,
   "start_xy": [
    608903.422,
    4597587.008
   ],
   "end_xy": [
    608893.7873444238,
    4597589.686322596
   ]
  },
  "min_20m": {
   "gradient_pct": 2.0954220545158364,
   "start_distance_m": 222.0,
   "end_distance_m": 242.0,
   "midpoint_distance_m": 232.0,
   "start_elevation_m": 270.09653200052907,
   "end_elevation_m": 270.51561641143223,
   "start_xy": [
    608764.5977673678,
    4597738.089911399
   ],
   "end_xy": [
    608783.6316315162,
    4597743.866426863
   ]
  },
  "min_25m": {
   "gradient_pct": 2.2104561292869676,
   "start_distance_m": 228.0,
   "end_distance_m": 253.0,
   "midpoint_distance_m": 240.5,
   "start_elevation_m": 270.2165613229692,
   "end_elevation_m": 270.76917535529094,
   "start_xy": [
    608770.1181476252,
    4597740.207772311
   ],
   "end_xy": [
    608793.8565737652,
    4597747.772479401
   ]
  },
  "min_50m": {
   "gradient_pct": 2.764119099914069,
   "start_distance_m": 217.0,
   "end_distance_m": 267.0,
   "midpoint_distance_m": 242.0,
   "start_elevation_m": 269.88391303916666,
   "end_elevation_m": 271.2659725891237,
   "start_xy": [
    608760.9409089125,
    4597734.785670346
   ],
   "end_xy": [
    608803.6445421773,
    4597757.421569477
   ]
  },
  "min_100m": {
   "gradient_pct": 9.547432218634583,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 236.8142792375541,
   "end_elevation_m": 246.3617114561887,
   "start_xy": [
    608903.422,
    4597587.008
   ],
   "end_xy": [
    608820.4070138697,
    4597638.999008791
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 33.8059146208451,
   "start_distance_m": 55.0,
   "end_distance_m": 57.0,
   "midpoint_distance_m": 56.0,
   "start_elevation_m": 240.9719397096417,
   "end_elevation_m": 241.6480580020586,
   "start_xy": [
    608853.3901173188,
    4597609.32037884
   ],
   "end_xy": [
    608851.5939414074,
    4597610.200010635
   ]
  },
  "max_3m": {
   "gradient_pct": 33.653136435743626,
   "start_distance_m": 55.0,
   "end_distance_m": 58.0,
   "midpoint_distance_m": 56.5,
   "start_elevation_m": 240.9719397096417,
   "end_elevation_m": 241.981533802714,
   "start_xy": [
    608853.3901173188,
    4597609.32037884
   ],
   "end_xy": [
    608850.6958534517,
    4597610.639826532
   ]
  }
 },
 "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": 0.562,
   "obstruction_max_height_m": 24.6,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_end"
  ]
 },
 "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_x60y460_NY_SouthEast4County_A22.tif"
  ],
  "calculated_at": "2026-09-06T12:58:23+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": [
   "x60y460"
  ],
  "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": 0.997,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "East Fishkill",
  "county": "New York"
 }
}