{
 "ocl_version": "0.1.0",
 "name": "Young Avenue",
 "slug": "young-avenue",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 22.282162099346436,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 108.0,
   "end_distance_m": 110.0,
   "start_elevation_m": 104.20404589478397,
   "end_elevation_m": 104.6496891367709,
   "min_gradient_pct": -13.274783085107345
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.098392530674477,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 107.0,
   "end_distance_m": 110.0,
   "start_elevation_m": 103.98673736085067,
   "end_elevation_m": 104.6496891367709,
   "min_gradient_pct": -13.094416568948475
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.88525036139481,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 108.0,
   "end_distance_m": 113.0,
   "start_elevation_m": 104.20404589478397,
   "end_elevation_m": 105.29830841285371,
   "min_gradient_pct": -12.787693712162707
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.613088805262777,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 101.0,
   "end_distance_m": 111.0,
   "start_elevation_m": 102.70491866737703,
   "end_elevation_m": 104.8662275479033,
   "min_gradient_pct": -12.579241041052995
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.30877164387904,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 94.0,
   "end_distance_m": 114.0,
   "start_elevation_m": 101.24889652048672,
   "end_elevation_m": 105.51065084926253,
   "min_gradient_pct": -11.885723343413375
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.977677002086466,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 89.0,
   "end_distance_m": 114.0,
   "start_elevation_m": 100.26623159874092,
   "end_elevation_m": 105.51065084926253,
   "min_gradient_pct": -11.640573940401282
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.14364303584128,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 73.0,
   "end_distance_m": 123.0,
   "start_elevation_m": 97.46385924381232,
   "end_elevation_m": 107.03568076173296,
   "min_gradient_pct": -10.247252989204014
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.455876041795733,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 21.0,
   "end_distance_m": 121.0,
   "start_elevation_m": 88.28473034346572,
   "end_elevation_m": 106.74060638526146,
   "min_gradient_pct": -9.003262540315887
  }
 ],
 "shape": {
  "ascent_concentration": 0.525,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 132.0,
  "shape_class": "stepped"
 },
 "length_m": 969.0218058272876,
 "start_elevation_m": 86.63965011474939,
 "end_elevation_m": 130.77315021031848,
 "endpoint_gain_m": 44.13350009556909,
 "overall_gradient_pct": 4.554438283036447,
 "accumulated_ascent_m": 62.496105899461995,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.88525036139481,
   "start_distance_m": 108.0,
   "end_distance_m": 113.0,
   "midpoint_distance_m": 110.5,
   "start_elevation_m": 104.20404589478397,
   "end_elevation_m": 105.29830841285371,
   "start_xy": [
    562501.9907684862,
    4756405.240793139
   ],
   "end_xy": [
    562502.38127871,
    4756410.225519988
   ]
  },
  "max_10m": {
   "gradient_pct": 21.613088805262777,
   "start_distance_m": 101.0,
   "end_distance_m": 111.0,
   "midpoint_distance_m": 106.0,
   "start_elevation_m": 102.70491866737703,
   "end_elevation_m": 104.8662275479033,
   "start_xy": [
    562501.444054173,
    4756398.262175549
   ],
   "end_xy": [
    562502.2250746205,
    4756408.231629248
   ]
  },
  "max_20m": {
   "gradient_pct": 21.30877164387904,
   "start_distance_m": 94.0,
   "end_distance_m": 114.0,
   "midpoint_distance_m": 104.0,
   "start_elevation_m": 101.24889652048672,
   "end_elevation_m": 105.51065084926253,
   "start_xy": [
    562500.8973398596,
    4756391.28355796
   ],
   "end_xy": [
    562502.4593807547,
    4756411.222465358
   ]
  },
  "max_25m": {
   "gradient_pct": 20.977677002086466,
   "start_distance_m": 89.0,
   "end_distance_m": 114.0,
   "midpoint_distance_m": 101.5,
   "start_elevation_m": 100.26623159874092,
   "end_elevation_m": 105.51065084926253,
   "start_xy": [
    562500.5068296358,
    4756386.29883111
   ],
   "end_xy": [
    562502.4593807547,
    4756411.222465358
   ]
  },
  "max_50m": {
   "gradient_pct": 19.14364303584128,
   "start_distance_m": 73.0,
   "end_distance_m": 123.0,
   "midpoint_distance_m": 98.0,
   "start_elevation_m": 97.46385924381232,
   "end_elevation_m": 107.03568076173296,
   "start_xy": [
    562498.1662977374,
    4756370.61141552
   ],
   "end_xy": [
    562503.1622991576,
    4756420.194973687
   ]
  },
  "max_100m": {
   "gradient_pct": 18.455876041795733,
   "start_distance_m": 21.0,
   "end_distance_m": 121.0,
   "midpoint_distance_m": 71.0,
   "start_elevation_m": 88.28473034346572,
   "end_elevation_m": 106.74060638526146,
   "start_xy": [
    562489.4628493458,
    4756320.899000903
   ],
   "end_xy": [
    562503.0060950681,
    4756418.201082948
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -12.787693712162707,
   "start_distance_m": 513.0,
   "end_distance_m": 518.0,
   "midpoint_distance_m": 515.5,
   "start_elevation_m": 122.98703762843212,
   "end_elevation_m": 122.34765294282398,
   "start_xy": [
    562170.4256181818,
    4756523.476833445
   ],
   "end_xy": [
    562170.0253721417,
    4756528.431770008
   ]
  },
  "min_10m": {
   "gradient_pct": -12.579241041052995,
   "start_distance_m": 511.0,
   "end_distance_m": 521.0,
   "midpoint_distance_m": 516.0,
   "start_elevation_m": 123.22646856673741,
   "end_elevation_m": 121.96854446263211,
   "start_xy": [
    562170.8103972783,
    4756521.514196176
   ],
   "end_xy": [
    562170.0910304015,
    4756531.431051421
   ]
  },
  "min_20m": {
   "gradient_pct": -11.885723343413375,
   "start_distance_m": 510.0,
   "end_distance_m": 530.0,
   "midpoint_distance_m": 520.0,
   "start_elevation_m": 123.3439820391227,
   "end_elevation_m": 120.96683737044002,
   "start_xy": [
    562171.0027868266,
    4756520.532877542
   ],
   "end_xy": [
    562170.2880051811,
    4756540.428895659
   ]
  },
  "min_25m": {
   "gradient_pct": -11.640573940401282,
   "start_distance_m": 506.0,
   "end_distance_m": 531.0,
   "midpoint_distance_m": 518.5,
   "start_elevation_m": 123.77537393048866,
   "end_elevation_m": 120.86523044538833,
   "start_xy": [
    562171.7723450196,
    4756516.607603006
   ],
   "end_xy": [
    562170.3098912677,
    4756541.42865613
   ]
  },
  "min_50m": {
   "gradient_pct": -10.247252989204014,
   "start_distance_m": 499.0,
   "end_distance_m": 549.0,
   "midpoint_distance_m": 524.0,
   "start_elevation_m": 124.42428057309533,
   "end_elevation_m": 119.30065407849332,
   "start_xy": [
    562173.1190718575,
    4756509.738372567
   ],
   "end_xy": [
    562170.7038408268,
    4756559.424344607
   ]
  },
  "min_100m": {
   "gradient_pct": -9.003262540315887,
   "start_distance_m": 497.0,
   "end_distance_m": 597.0,
   "midpoint_distance_m": 547.0,
   "start_elevation_m": 124.57207516078475,
   "end_elevation_m": 115.56881262046886,
   "start_xy": [
    562173.9852379803,
    4756507.948303574
   ],
   "end_xy": [
    562169.2220675078,
    4756607.087598705
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 22.282162099346436,
   "start_distance_m": 108.0,
   "end_distance_m": 110.0,
   "midpoint_distance_m": 109.0,
   "start_elevation_m": 104.20404589478397,
   "end_elevation_m": 104.6496891367709,
   "start_xy": [
    562501.9907684862,
    4756405.240793139
   ],
   "end_xy": [
    562502.1469725757,
    4756407.234683878
   ]
  },
  "max_3m": {
   "gradient_pct": 22.098392530674477,
   "start_distance_m": 107.0,
   "end_distance_m": 110.0,
   "midpoint_distance_m": 108.5,
   "start_elevation_m": 103.98673736085067,
   "end_elevation_m": 104.6496891367709,
   "start_xy": [
    562501.9126664415,
    4756404.243847769
   ],
   "end_xy": [
    562502.1469725757,
    4756407.234683878
   ]
  }
 },
 "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": 0.242,
   "obstruction_max_height_m": 25.82,
   "flagged_windows_m": [
    3,
    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_x56y476_NY_FEMAR2_Central_2018_D19.tif"
  ],
  "calculated_at": "2026-09-06T11:07:59+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-band2.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": [
   "x56y476"
  ],
  "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_2_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": "Amsterdam",
  "county": "New York"
 }
}