{
 "ocl_version": "0.1.0",
 "name": "Lemon Street",
 "slug": "lemon-street",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 21.572238669523358,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 513.0,
   "end_distance_m": 515.0,
   "start_elevation_m": 262.6716981418332,
   "end_elevation_m": 263.10314291522366,
   "min_gradient_pct": -5.296423841332398
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.534230445774938,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 512.0,
   "end_distance_m": 515.0,
   "start_elevation_m": 262.4571160018504,
   "end_elevation_m": 263.10314291522366,
   "min_gradient_pct": -4.731634477075393
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.341165548301433,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 510.0,
   "end_distance_m": 515.0,
   "start_elevation_m": 262.0360846378086,
   "end_elevation_m": 263.10314291522366,
   "min_gradient_pct": -4.045694197135958
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.141674726781616,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 508.0,
   "end_distance_m": 518.0,
   "start_elevation_m": 261.61346723737057,
   "end_elevation_m": 263.72763471004873,
   "min_gradient_pct": -3.8262333127289594
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.859364103677933,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 501.0,
   "end_distance_m": 521.0,
   "start_elevation_m": 260.18469539741847,
   "end_elevation_m": 264.35656821815405,
   "min_gradient_pct": -3.0504984476178265
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.627143047848676,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 497.0,
   "end_distance_m": 522.0,
   "start_elevation_m": 259.39695134926507,
   "end_elevation_m": 264.55373711122724,
   "min_gradient_pct": -2.649872782529087
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.517857264020677,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 474.0,
   "end_distance_m": 524.0,
   "start_elevation_m": 255.17202166314007,
   "end_elevation_m": 264.9309502951504,
   "min_gradient_pct": -1.583843193891937
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.211117479476854,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 454.0,
   "end_distance_m": 554.0,
   "start_elevation_m": 251.96703818952147,
   "end_elevation_m": 269.17815566899833,
   "min_gradient_pct": -0.3599325680504535
  }
 ],
 "shape": {
  "ascent_concentration": 0.52,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 127.0,
  "shape_class": "stepped"
 },
 "length_m": 554.8963127775527,
 "start_elevation_m": 229.30626418701712,
 "end_elevation_m": 269.33659342468655,
 "endpoint_gain_m": 40.030329237669434,
 "overall_gradient_pct": 7.214019685460918,
 "accumulated_ascent_m": 41.01914683429308,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.341165548301433,
   "start_distance_m": 510.0,
   "end_distance_m": 515.0,
   "midpoint_distance_m": 512.5,
   "start_elevation_m": 262.0360846378086,
   "end_elevation_m": 263.10314291522366,
   "start_xy": [
    598975.1994783195,
    4464657.976217513
   ],
   "end_xy": [
    598979.4507764016,
    4464660.608035252
   ]
  },
  "max_10m": {
   "gradient_pct": 21.141674726781616,
   "start_distance_m": 508.0,
   "end_distance_m": 518.0,
   "midpoint_distance_m": 513.0,
   "start_elevation_m": 261.61346723737057,
   "end_elevation_m": 263.72763471004873,
   "start_xy": [
    598973.4989590867,
    4464656.923490416
   ],
   "end_xy": [
    598982.0015552508,
    4464662.187125897
   ]
  },
  "max_20m": {
   "gradient_pct": 20.859364103677933,
   "start_distance_m": 501.0,
   "end_distance_m": 521.0,
   "midpoint_distance_m": 511.0,
   "start_elevation_m": 260.18469539741847,
   "end_elevation_m": 264.35656821815405,
   "start_xy": [
    598967.5471417718,
    4464653.23894558
   ],
   "end_xy": [
    598984.5523341,
    4464663.766216541
   ]
  },
  "max_25m": {
   "gradient_pct": 20.627143047848676,
   "start_distance_m": 497.0,
   "end_distance_m": 522.0,
   "midpoint_distance_m": 509.5,
   "start_elevation_m": 259.39695134926507,
   "end_elevation_m": 264.55373711122724,
   "start_xy": [
    598964.1461033062,
    4464651.1334913885
   ],
   "end_xy": [
    598985.4025937164,
    4464664.2925800895
   ]
  },
  "max_50m": {
   "gradient_pct": 19.517857264020677,
   "start_distance_m": 474.0,
   "end_distance_m": 524.0,
   "midpoint_distance_m": 499.0,
   "start_elevation_m": 255.17202166314007,
   "end_elevation_m": 264.9309502951504,
   "start_xy": [
    598944.322212005,
    4464639.489636301
   ],
   "end_xy": [
    598987.1031129493,
    4464665.345307185
   ]
  },
  "max_100m": {
   "gradient_pct": 17.211117479476854,
   "start_distance_m": 454.0,
   "end_distance_m": 554.0,
   "midpoint_distance_m": 504.0,
   "start_elevation_m": 251.96703818952147,
   "end_elevation_m": 269.17815566899833,
   "start_xy": [
    598926.7268462916,
    4464629.981581536
   ],
   "end_xy": [
    599012.6109014415,
    4464681.136213627
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -4.045694197135958,
   "start_distance_m": 217.0,
   "end_distance_m": 222.0,
   "midpoint_distance_m": 219.5,
   "start_elevation_m": 242.76190324445284,
   "end_elevation_m": 242.55961853459604,
   "start_xy": [
    598722.795231702,
    4464509.3016288765
   ],
   "end_xy": [
    598727.0525060716,
    4464511.92376826
   ]
  },
  "min_10m": {
   "gradient_pct": -3.8262333127289594,
   "start_distance_m": 218.0,
   "end_distance_m": 228.0,
   "midpoint_distance_m": 223.0,
   "start_elevation_m": 242.73030629966613,
   "end_elevation_m": 242.34768296839323,
   "start_xy": [
    598723.646686576,
    4464509.826056753
   ],
   "end_xy": [
    598732.161235315,
    4464515.070335519
   ]
  },
  "min_20m": {
   "gradient_pct": -3.0504984476178265,
   "start_distance_m": 217.0,
   "end_distance_m": 237.0,
   "midpoint_distance_m": 227.0,
   "start_elevation_m": 242.76190324445284,
   "end_elevation_m": 242.15180355492927,
   "start_xy": [
    598722.795231702,
    4464509.3016288765
   ],
   "end_xy": [
    598739.8243291802,
    4464519.790186408
   ]
  },
  "min_25m": {
   "gradient_pct": -2.649872782529087,
   "start_distance_m": 217.0,
   "end_distance_m": 242.0,
   "midpoint_distance_m": 229.5,
   "start_elevation_m": 242.76190324445284,
   "end_elevation_m": 242.09943504882057,
   "start_xy": [
    598722.795231702,
    4464509.3016288765
   ],
   "end_xy": [
    598744.0816035497,
    4464522.412325791
   ]
  },
  "min_50m": {
   "gradient_pct": -1.583843193891937,
   "start_distance_m": 217.0,
   "end_distance_m": 267.0,
   "midpoint_distance_m": 242.0,
   "start_elevation_m": 242.76190324445284,
   "end_elevation_m": 241.96998164750687,
   "start_xy": [
    598722.795231702,
    4464509.3016288765
   ],
   "end_xy": [
    598765.3679753973,
    4464535.523022705
   ]
  },
  "min_100m": {
   "gradient_pct": -0.3599325680504535,
   "start_distance_m": 216.0,
   "end_distance_m": 316.0,
   "midpoint_distance_m": 266.0,
   "start_elevation_m": 242.74361790249532,
   "end_elevation_m": 242.38368533444486,
   "start_xy": [
    598722.3154350338,
    4464508.688553051
   ],
   "end_xy": [
    598807.3532710049,
    4464560.782166621
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 21.572238669523358,
   "start_distance_m": 513.0,
   "end_distance_m": 515.0,
   "midpoint_distance_m": 514.0,
   "start_elevation_m": 262.6716981418332,
   "end_elevation_m": 263.10314291522366,
   "start_xy": [
    598977.7502571688,
    4464659.555308157
   ],
   "end_xy": [
    598979.4507764016,
    4464660.608035252
   ]
  },
  "max_3m": {
   "gradient_pct": 21.534230445774938,
   "start_distance_m": 512.0,
   "end_distance_m": 515.0,
   "midpoint_distance_m": 513.5,
   "start_elevation_m": 262.4571160018504,
   "end_elevation_m": 263.10314291522366,
   "start_xy": [
    598976.8999975524,
    4464659.028944609
   ],
   "end_xy": [
    598979.4507764016,
    4464660.608035252
   ]
  }
 },
 "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_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:26917",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/pa-west/USGS_1M_17_x59y447_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-07T12:05:46+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": [
   "x59y447"
  ],
  "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": "McKeesport",
  "county": "Pennsylvania"
 }
}