{
 "ocl_version": "0.1.0",
 "name": "5th Street",
 "slug": "5th-street-21",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 31.83386281401681,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1004.0,
   "end_distance_m": 1006.0,
   "start_elevation_m": 325.8716025075797,
   "end_elevation_m": 326.50827976386006,
   "min_gradient_pct": -4.529802038516095
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 30.781293721169806,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1003.0,
   "end_distance_m": 1006.0,
   "start_elevation_m": 325.58484095222497,
   "end_elevation_m": 326.50827976386006,
   "min_gradient_pct": -3.167236313936428
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 29.35155672638075,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 982.0,
   "end_distance_m": 987.0,
   "start_elevation_m": 320.02490383586945,
   "end_elevation_m": 321.4924816721885,
   "min_gradient_pct": -2.7195376012082306
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 28.494025772957343,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 980.0,
   "end_distance_m": 990.0,
   "start_elevation_m": 319.47023207993004,
   "end_elevation_m": 322.3196346572258,
   "min_gradient_pct": -2.200246613354011
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 27.19356955225919,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 969.0,
   "end_distance_m": 989.0,
   "start_elevation_m": 316.6076848926779,
   "end_elevation_m": 322.04639880312976,
   "min_gradient_pct": -1.0232126825135879
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 27.059529881692924,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 982.0,
   "end_distance_m": 1007.0,
   "start_elevation_m": 320.02490383586945,
   "end_elevation_m": 326.7897863062927,
   "min_gradient_pct": -0.8807916632308661
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 26.00258181875529,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 957.0,
   "end_distance_m": 1007.0,
   "start_elevation_m": 313.78849539691504,
   "end_elevation_m": 326.7897863062927,
   "min_gradient_pct": 1.5635255493025397
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 23.601052560511388,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 947.0,
   "end_distance_m": 1047.0,
   "start_elevation_m": 311.9358874647605,
   "end_elevation_m": 335.5369400252719,
   "min_gradient_pct": 2.867116294121047
  }
 ],
 "shape": {
  "ascent_concentration": 0.498,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 173.0,
  "shape_class": "stepped"
 },
 "length_m": 1089.9000000000117,
 "start_elevation_m": 245.54435330780177,
 "end_elevation_m": 339.9288753598636,
 "endpoint_gain_m": 94.38452205206181,
 "overall_gradient_pct": 8.659924952019523,
 "accumulated_ascent_m": 94.85243453387326,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 29.35155672638075,
   "start_distance_m": 982.0,
   "end_distance_m": 987.0,
   "midpoint_distance_m": 984.5,
   "start_elevation_m": 320.02490383586945,
   "end_elevation_m": 321.4924816721885,
   "start_xy": [
    605843.428230874,
    4471169.476909757
   ],
   "end_xy": [
    605848.2850863866,
    4471168.289075556
   ]
  },
  "max_10m": {
   "gradient_pct": 28.494025772957343,
   "start_distance_m": 980.0,
   "end_distance_m": 990.0,
   "midpoint_distance_m": 985.0,
   "start_elevation_m": 319.47023207993004,
   "end_elevation_m": 322.3196346572258,
   "start_xy": [
    605841.4852427437,
    4471169.95103727
   ],
   "end_xy": [
    605851.1993549527,
    4471167.577009795
   ]
  },
  "max_20m": {
   "gradient_pct": 27.19356955225919,
   "start_distance_m": 969.0,
   "end_distance_m": 989.0,
   "midpoint_distance_m": 979.0,
   "start_elevation_m": 316.6076848926779,
   "end_elevation_m": 322.04639880312976,
   "start_xy": [
    605830.7998011624,
    4471172.562802394
   ],
   "end_xy": [
    605850.2280256206,
    4471167.814747608
   ]
  },
  "max_25m": {
   "gradient_pct": 27.059529881692924,
   "start_distance_m": 982.0,
   "end_distance_m": 1007.0,
   "midpoint_distance_m": 994.5,
   "start_elevation_m": 320.02490383586945,
   "end_elevation_m": 326.7897863062927,
   "start_xy": [
    605843.428230874,
    4471169.476909757
   ],
   "end_xy": [
    605867.6566489899,
    4471163.322328492
   ]
  },
  "max_50m": {
   "gradient_pct": 26.00258181875529,
   "start_distance_m": 957.0,
   "end_distance_m": 1007.0,
   "midpoint_distance_m": 982.0,
   "start_elevation_m": 313.78849539691504,
   "end_elevation_m": 326.7897863062927,
   "start_xy": [
    605819.1429010972,
    4471175.411778002
   ],
   "end_xy": [
    605867.6566489899,
    4471163.322328492
   ]
  },
  "max_100m": {
   "gradient_pct": 23.601052560511388,
   "start_distance_m": 947.0,
   "end_distance_m": 1047.0,
   "midpoint_distance_m": 997.0,
   "start_elevation_m": 311.9358874647605,
   "end_elevation_m": 335.5369400252719,
   "start_xy": [
    605809.428788644,
    4471177.785805449
   ],
   "end_xy": [
    605903.3337649725,
    4471147.03199008
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -2.7195376012082306,
   "start_distance_m": 380.0,
   "end_distance_m": 385.0,
   "midpoint_distance_m": 382.5,
   "start_elevation_m": 270.5671992021306,
   "end_elevation_m": 270.4312223220702,
   "start_xy": [
    605447.8359226967,
    4471433.824776423
   ],
   "end_xy": [
    605446.4869237315,
    4471429.0101946425
   ]
  },
  "min_10m": {
   "gradient_pct": -2.200246613354011,
   "start_distance_m": 377.0,
   "end_distance_m": 387.0,
   "midpoint_distance_m": 382.0,
   "start_elevation_m": 270.6253423524195,
   "end_elevation_m": 270.4053176910841,
   "start_xy": [
    605448.6459659555,
    4471436.713345242
   ],
   "end_xy": [
    605445.9469963468,
    4471427.084453637
   ]
  },
  "min_20m": {
   "gradient_pct": -1.0232126825135879,
   "start_distance_m": 366.0,
   "end_distance_m": 386.0,
   "midpoint_distance_m": 376.0,
   "start_elevation_m": 270.6171349143065,
   "end_elevation_m": 270.4124923778038,
   "start_xy": [
    605445.2444665249,
    4471443.924491963
   ],
   "end_xy": [
    605446.2169600392,
    4471428.04732414
   ]
  },
  "min_25m": {
   "gradient_pct": -0.8807916632308661,
   "start_distance_m": 364.0,
   "end_distance_m": 389.0,
   "midpoint_distance_m": 376.5,
   "start_elevation_m": 270.63754011161603,
   "end_elevation_m": 270.4173421958083,
   "start_xy": [
    605443.3137669937,
    4471444.446410781
   ],
   "end_xy": [
    605445.407996207,
    4471425.158453138
   ]
  },
  "min_50m": {
   "gradient_pct": 1.5635255493025397,
   "start_distance_m": 363.0,
   "end_distance_m": 413.0,
   "midpoint_distance_m": 388.0,
   "start_elevation_m": 270.616319217252,
   "end_elevation_m": 271.39808199190327,
   "start_xy": [
    605442.3484315516,
    4471444.707423176
   ],
   "end_xy": [
    605438.931412739,
    4471402.048849323
   ]
  },
  "min_100m": {
   "gradient_pct": 2.867116294121047,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 245.54435330780177,
   "end_elevation_m": 248.41146960192282,
   "start_xy": [
    605192.635,
    4471362.552
   ],
   "end_xy": [
    605219.9689309767,
    4471458.743756775
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 31.83386281401681,
   "start_distance_m": 1004.0,
   "end_distance_m": 1006.0,
   "midpoint_distance_m": 1005.0,
   "start_elevation_m": 325.8716025075797,
   "end_elevation_m": 326.50827976386006,
   "start_xy": [
    605864.7636307435,
    4471164.116333489
   ],
   "end_xy": [
    605866.692186915,
    4471163.586549708
   ]
  },
  "max_3m": {
   "gradient_pct": 30.781293721169806,
   "start_distance_m": 1003.0,
   "end_distance_m": 1006.0,
   "midpoint_distance_m": 1004.5,
   "start_elevation_m": 325.58484095222497,
   "end_elevation_m": 326.50827976386006,
   "start_xy": [
    605863.799168672,
    4471164.380554717
   ],
   "end_xy": [
    605866.692186915,
    4471163.586549708
   ]
  }
 },
 "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_x60y448_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-15T21:10:04+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/pennsylvania-2026-09-07.osm.pbf",
  "osm_snapshot": "2026-09-06T20:21:35Z",
  "run_id": "retro-260915-dogleg-all",
  "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": [
   "x60y448"
  ],
  "route_cut_m": 1089.9,
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 EPT corridor failed: PA_WesternPA_2019_D20: HTTP Error 404: Not Found",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Trafford",
  "county": "Pennsylvania"
 }
}