{
 "ocl_version": "0.1.0",
 "name": "6th Street",
 "slug": "6th-street-7",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 29.727481538743916,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 168.0,
   "end_distance_m": 170.0,
   "start_elevation_m": 248.4396019095668,
   "end_elevation_m": 249.03415154034167,
   "min_gradient_pct": -0.8090196807557959
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 29.472012045540435,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 168.0,
   "end_distance_m": 171.0,
   "start_elevation_m": 248.4396019095668,
   "end_elevation_m": 249.323762270933,
   "min_gradient_pct": -0.5979479320785686
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 28.592049214227018,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 168.0,
   "end_distance_m": 173.0,
   "start_elevation_m": 248.4396019095668,
   "end_elevation_m": 249.86920437027814,
   "min_gradient_pct": 0.7292409439617131
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 28.339034267171144,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 162.0,
   "end_distance_m": 172.0,
   "start_elevation_m": 246.7663947921237,
   "end_elevation_m": 249.6002982188408,
   "min_gradient_pct": 6.866067015263297
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 27.59723026280966,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 160.0,
   "end_distance_m": 180.0,
   "start_elevation_m": 246.22006787849824,
   "end_elevation_m": 251.73951393106017,
   "min_gradient_pct": 9.458182826509756
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 27.56663044283141,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 161.0,
   "end_distance_m": 186.0,
   "start_elevation_m": 246.49367399392113,
   "end_elevation_m": 253.385331604629,
   "min_gradient_pct": 10.478685932164353
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 25.348456787460744,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 97.0,
   "end_distance_m": 147.0,
   "start_elevation_m": 231.82510689993325,
   "end_elevation_m": 244.49933529366362,
   "min_gradient_pct": 12.128485372574062
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 24.57003918786773,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 97.0,
   "end_distance_m": 197.0,
   "start_elevation_m": 231.82510689993325,
   "end_elevation_m": 256.395146087801,
   "min_gradient_pct": 13.35073468025098
  }
 ],
 "shape": {
  "ascent_concentration": 0.338,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 123.0,
  "shape_class": "sustained"
 },
 "length_m": 200.07525687034507,
 "start_elevation_m": 219.15730306167723,
 "end_elevation_m": 256.6690095214782,
 "endpoint_gain_m": 37.51170645980096,
 "overall_gradient_pct": 18.748798350467546,
 "accumulated_ascent_m": 37.52964489776332,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 28.592049214227018,
   "start_distance_m": 168.0,
   "end_distance_m": 173.0,
   "midpoint_distance_m": 170.5,
   "start_elevation_m": 248.4396019095668,
   "end_elevation_m": 249.86920437027814,
   "start_xy": [
    563001.5159949755,
    4504398.88667292
   ],
   "end_xy": [
    563005.510351923,
    4504401.894182284
   ]
  },
  "max_10m": {
   "gradient_pct": 28.339034267171144,
   "start_distance_m": 162.0,
   "end_distance_m": 172.0,
   "midpoint_distance_m": 167.0,
   "start_elevation_m": 246.7663947921237,
   "end_elevation_m": 249.6002982188408,
   "start_xy": [
    562996.7227666385,
    4504395.277661683
   ],
   "end_xy": [
    563004.7114805335,
    4504401.292680412
   ]
  },
  "max_20m": {
   "gradient_pct": 27.59723026280966,
   "start_distance_m": 160.0,
   "end_distance_m": 180.0,
   "midpoint_distance_m": 170.0,
   "start_elevation_m": 246.22006787849824,
   "end_elevation_m": 251.73951393106017,
   "start_xy": [
    562995.1250238594,
    4504394.0746579375
   ],
   "end_xy": [
    563011.1024516495,
    4504406.104695395
   ]
  },
  "max_25m": {
   "gradient_pct": 27.56663044283141,
   "start_distance_m": 161.0,
   "end_distance_m": 186.0,
   "midpoint_distance_m": 173.5,
   "start_elevation_m": 246.49367399392113,
   "end_elevation_m": 253.385331604629,
   "start_xy": [
    562995.923895249,
    4504394.67615981
   ],
   "end_xy": [
    563015.8956799865,
    4504409.713706631
   ]
  },
  "max_50m": {
   "gradient_pct": 25.348456787460744,
   "start_distance_m": 97.0,
   "end_distance_m": 147.0,
   "midpoint_distance_m": 122.0,
   "start_elevation_m": 231.82510689993325,
   "end_elevation_m": 244.49933529366362,
   "start_xy": [
    562944.6490397337,
    4504356.37625894
   ],
   "end_xy": [
    562984.7204861778,
    4504386.280759937
   ]
  },
  "max_100m": {
   "gradient_pct": 24.57003918786773,
   "start_distance_m": 97.0,
   "end_distance_m": 197.0,
   "midpoint_distance_m": 147.0,
   "start_elevation_m": 231.82510689993325,
   "end_elevation_m": 256.395146087801,
   "start_xy": [
    562944.6490397337,
    4504356.37625894
   ],
   "end_xy": [
    563024.6832652709,
    4504416.330227233
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.7292409439617131,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 219.15730306167723,
   "end_elevation_m": 219.1937651088753,
   "start_xy": [
    562866.391,
    4504299.066
   ],
   "end_xy": [
    562870.4323791928,
    4504302.010020078
   ]
  },
  "min_10m": {
   "gradient_pct": 6.866067015263297,
   "start_distance_m": 73.0,
   "end_distance_m": 83.0,
   "midpoint_distance_m": 78.0,
   "start_elevation_m": 228.43101012098776,
   "end_elevation_m": 229.1176168225141,
   "start_xy": [
    562925.3951362149,
    4504342.048693139
   ],
   "end_xy": [
    562933.4290347293,
    4504348.002998661
   ]
  },
  "min_20m": {
   "gradient_pct": 9.458182826509756,
   "start_distance_m": 63.0,
   "end_distance_m": 83.0,
   "midpoint_distance_m": 73.0,
   "start_elevation_m": 227.22598025721214,
   "end_elevation_m": 229.1176168225141,
   "start_xy": [
    562917.3123778292,
    4504336.160652983
   ],
   "end_xy": [
    562933.4290347293,
    4504348.002998661
   ]
  },
  "min_25m": {
   "gradient_pct": 10.478685932164353,
   "start_distance_m": 58.0,
   "end_distance_m": 83.0,
   "midpoint_distance_m": 70.5,
   "start_elevation_m": 226.497945339473,
   "end_elevation_m": 229.1176168225141,
   "start_xy": [
    562913.2709986365,
    4504333.216632905
   ],
   "end_xy": [
    562933.4290347293,
    4504348.002998661
   ]
  },
  "min_50m": {
   "gradient_pct": 12.128485372574062,
   "start_distance_m": 33.0,
   "end_distance_m": 83.0,
   "midpoint_distance_m": 58.0,
   "start_elevation_m": 223.05337413622706,
   "end_elevation_m": 229.1176168225141,
   "start_xy": [
    562893.0641026725,
    4504318.496532515
   ],
   "end_xy": [
    562933.4290347293,
    4504348.002998661
   ]
  },
  "min_100m": {
   "gradient_pct": 13.35073468025098,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 219.15730306167723,
   "end_elevation_m": 232.5080377419282,
   "start_xy": [
    562866.391,
    4504299.066
   ],
   "end_xy": [
    562947.0533265204,
    4504358.170529
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 29.727481538743916,
   "start_distance_m": 168.0,
   "end_distance_m": 170.0,
   "midpoint_distance_m": 169.0,
   "start_elevation_m": 248.4396019095668,
   "end_elevation_m": 249.03415154034167,
   "start_xy": [
    563001.5159949755,
    4504398.88667292
   ],
   "end_xy": [
    563003.1137377545,
    4504400.089676666
   ]
  },
  "max_3m": {
   "gradient_pct": 29.472012045540435,
   "start_distance_m": 168.0,
   "end_distance_m": 171.0,
   "midpoint_distance_m": 169.5,
   "start_elevation_m": 248.4396019095668,
   "end_elevation_m": 249.323762270933,
   "start_xy": [
    563001.5159949755,
    4504398.88667292
   ],
   "end_xy": [
    563003.912609144,
    4504400.691178539
   ]
  }
 },
 "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",
   "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_x56y451_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-07T14:23:55+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": [
   "x56y451"
  ],
  "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": "Freedom",
  "county": "Pennsylvania"
 }
}