{
 "ocl_version": "0.1.0",
 "name": "Norwood Avenue",
 "slug": "norwood-avenue-2",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 23.026771716476446,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 240.0,
   "end_distance_m": 242.0,
   "start_elevation_m": 328.8889522833393,
   "end_elevation_m": 329.3494877176688,
   "min_gradient_pct": 0.6258916026723682
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.727969451801755,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 239.0,
   "end_distance_m": 242.0,
   "start_elevation_m": 328.66764863411476,
   "end_elevation_m": 329.3494877176688,
   "min_gradient_pct": 0.6683532471811304
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.233778102711312,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 238.0,
   "end_distance_m": 243.0,
   "start_elevation_m": 328.4565864985214,
   "end_elevation_m": 329.56827540365697,
   "min_gradient_pct": 1.051495537443543
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.981453633989645,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 236.0,
   "end_distance_m": 246.0,
   "start_elevation_m": 328.0184402004239,
   "end_elevation_m": 330.2165855638229,
   "min_gradient_pct": 1.7137716223362531
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.586764645125527,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 234.0,
   "end_distance_m": 254.0,
   "start_elevation_m": 327.59430474381645,
   "end_elevation_m": 331.91165767284156,
   "min_gradient_pct": 1.79063244555266
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.49938053836513,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 232.0,
   "end_distance_m": 257.0,
   "start_elevation_m": 327.1698207410483,
   "end_elevation_m": 332.54466587563957,
   "min_gradient_pct": 1.8354972629131225
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.07459037615638,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 231.0,
   "end_distance_m": 281.0,
   "start_elevation_m": 326.97015357613793,
   "end_elevation_m": 337.5074487642161,
   "min_gradient_pct": 2.244046163091639
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.723885111477102,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 201.0,
   "end_distance_m": 301.0,
   "start_elevation_m": 321.53287875187095,
   "end_elevation_m": 341.25676386334806,
   "min_gradient_pct": 6.4005877406262925
  }
 ],
 "shape": {
  "ascent_concentration": 0.402,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 190.0,
  "shape_class": "sustained"
 },
 "length_m": 522.0796808621593,
 "start_elevation_m": 297.3057220833822,
 "end_elevation_m": 358.81684018774297,
 "endpoint_gain_m": 61.511118104360776,
 "overall_gradient_pct": 11.781940642237155,
 "accumulated_ascent_m": 61.511118104360776,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.233778102711312,
   "start_distance_m": 238.0,
   "end_distance_m": 243.0,
   "midpoint_distance_m": 240.5,
   "start_elevation_m": 328.4565864985214,
   "end_elevation_m": 329.56827540365697,
   "start_xy": [
    578891.0216651077,
    4484460.57271819
   ],
   "end_xy": [
    578890.698795614,
    4484465.56228283
   ]
  },
  "max_10m": {
   "gradient_pct": 21.981453633989645,
   "start_distance_m": 236.0,
   "end_distance_m": 246.0,
   "midpoint_distance_m": 241.0,
   "start_elevation_m": 328.0184402004239,
   "end_elevation_m": 330.2165855638229,
   "start_xy": [
    578891.1508129053,
    4484458.576892335
   ],
   "end_xy": [
    578890.5050739177,
    4484468.556021613
   ]
  },
  "max_20m": {
   "gradient_pct": 21.586764645125527,
   "start_distance_m": 234.0,
   "end_distance_m": 254.0,
   "midpoint_distance_m": 244.0,
   "start_elevation_m": 327.59430474381645,
   "end_elevation_m": 331.91165767284156,
   "start_xy": [
    578891.2799607028,
    4484456.581066479
   ],
   "end_xy": [
    578889.9884827277,
    4484476.539325036
   ]
  },
  "max_25m": {
   "gradient_pct": 21.49938053836513,
   "start_distance_m": 232.0,
   "end_distance_m": 257.0,
   "midpoint_distance_m": 244.5,
   "start_elevation_m": 327.1698207410483,
   "end_elevation_m": 332.54466587563957,
   "start_xy": [
    578891.4091085002,
    4484454.585240623
   ],
   "end_xy": [
    578889.7947610314,
    4484479.53306382
   ]
  },
  "max_50m": {
   "gradient_pct": 21.07459037615638,
   "start_distance_m": 231.0,
   "end_distance_m": 281.0,
   "midpoint_distance_m": 256.0,
   "start_elevation_m": 326.97015357613793,
   "end_elevation_m": 337.5074487642161,
   "start_xy": [
    578891.473682399,
    4484453.587327695
   ],
   "end_xy": [
    578888.2469500164,
    4484503.483099501
   ]
  },
  "max_100m": {
   "gradient_pct": 19.723885111477102,
   "start_distance_m": 201.0,
   "end_distance_m": 301.0,
   "midpoint_distance_m": 251.0,
   "start_elevation_m": 321.53287875187095,
   "end_elevation_m": 341.25676386334806,
   "start_xy": [
    578893.4146807828,
    4484423.650184957
   ],
   "end_xy": [
    578886.9869390518,
    4484523.4433693485
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 1.051495537443543,
   "start_distance_m": 517.0,
   "end_distance_m": 522.0,
   "midpoint_distance_m": 519.5,
   "start_elevation_m": 358.76413268089647,
   "end_elevation_m": 358.81670745776864,
   "start_xy": [
    578969.8531677008,
    4484653.734801612
   ],
   "end_xy": [
    578969.53211633,
    4484658.724483567
   ]
  },
  "min_10m": {
   "gradient_pct": 1.7137716223362531,
   "start_distance_m": 500.0,
   "end_distance_m": 510.0,
   "midpoint_distance_m": 505.0,
   "start_elevation_m": 358.4255464132556,
   "end_elevation_m": 358.5969235754892,
   "start_xy": [
    578970.9447423617,
    4484636.769882963
   ],
   "end_xy": [
    578970.30263962,
    4484646.749246874
   ]
  },
  "min_20m": {
   "gradient_pct": 1.79063244555266,
   "start_distance_m": 502.0,
   "end_distance_m": 522.0,
   "midpoint_distance_m": 512.0,
   "start_elevation_m": 358.4585809686581,
   "end_elevation_m": 358.81670745776864,
   "start_xy": [
    578970.8163218133,
    4484638.765755746
   ],
   "end_xy": [
    578969.53211633,
    4484658.724483567
   ]
  },
  "min_25m": {
   "gradient_pct": 1.8354972629131225,
   "start_distance_m": 497.0,
   "end_distance_m": 522.0,
   "midpoint_distance_m": 509.5,
   "start_elevation_m": 358.35783314204036,
   "end_elevation_m": 358.81670745776864,
   "start_xy": [
    578971.1373731841,
    4484633.77607379
   ],
   "end_xy": [
    578969.53211633,
    4484658.724483567
   ]
  },
  "min_50m": {
   "gradient_pct": 2.244046163091639,
   "start_distance_m": 472.0,
   "end_distance_m": 522.0,
   "midpoint_distance_m": 497.0,
   "start_elevation_m": 357.6946843762228,
   "end_elevation_m": 358.81670745776864,
   "start_xy": [
    578972.7426300382,
    4484608.827664012
   ],
   "end_xy": [
    578969.53211633,
    4484658.724483567
   ]
  },
  "min_100m": {
   "gradient_pct": 6.4005877406262925,
   "start_distance_m": 422.0,
   "end_distance_m": 522.0,
   "midpoint_distance_m": 472.0,
   "start_elevation_m": 352.41611971714235,
   "end_elevation_m": 358.81670745776864,
   "start_xy": [
    578975.9531437464,
    4484558.930844457
   ],
   "end_xy": [
    578969.53211633,
    4484658.724483567
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 23.026771716476446,
   "start_distance_m": 240.0,
   "end_distance_m": 242.0,
   "midpoint_distance_m": 241.0,
   "start_elevation_m": 328.8889522833393,
   "end_elevation_m": 329.3494877176688,
   "start_xy": [
    578890.8925173102,
    4484462.568544046
   ],
   "end_xy": [
    578890.7633695127,
    4484464.564369902
   ]
  },
  "max_3m": {
   "gradient_pct": 22.727969451801755,
   "start_distance_m": 239.0,
   "end_distance_m": 242.0,
   "midpoint_distance_m": 240.5,
   "start_elevation_m": 328.66764863411476,
   "end_elevation_m": 329.3494877176688,
   "start_xy": [
    578890.957091209,
    4484461.5706311185
   ],
   "end_xy": [
    578890.7633695127,
    4484464.564369902
   ]
  }
 },
 "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": {
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "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:26917",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/pa-west/USGS_1M_17_x57y449_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-07T10:33:01+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/pennsylvania-2026-09-07-batch-band1.osm.pbf",
  "osm_snapshot": "",
  "run_id": "pa-run4-260907",
  "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, PA_WesternPA_2019_D20 (collected 2020)",
  "elevation_tile_ids": [
   "x57y449"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 EPT corridor failed: PA_WesternPA_2019_D20: HTTP Error 404: Not Found",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Avalon",
  "county": "Pennsylvania"
 }
}