{
 "ocl_version": "0.1.0",
 "name": "Frederick Street",
 "slug": "frederick-street-2",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 22.168293698948105,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 182.0,
   "end_distance_m": 184.0,
   "start_elevation_m": 261.0738536514172,
   "end_elevation_m": 261.5172195253962,
   "min_gradient_pct": -0.6474317157994847
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.04422023096413,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 181.0,
   "end_distance_m": 184.0,
   "start_elevation_m": 260.85589291846725,
   "end_elevation_m": 261.5172195253962,
   "min_gradient_pct": -0.5590236613575902
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.934135280366718,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 178.0,
   "end_distance_m": 183.0,
   "start_elevation_m": 260.2025321425933,
   "end_elevation_m": 261.29923890661166,
   "min_gradient_pct": -0.24568711900030848
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.458358787868974,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 175.0,
   "end_distance_m": 185.0,
   "start_elevation_m": 259.58009126540856,
   "end_elevation_m": 261.72592714419545,
   "min_gradient_pct": 2.504194394946353
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.913860476648267,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 175.0,
   "end_distance_m": 195.0,
   "start_elevation_m": 259.58009126540856,
   "end_elevation_m": 263.7628633607382,
   "min_gradient_pct": 4.0963766571670135
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.618301918376346,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 171.0,
   "end_distance_m": 196.0,
   "start_elevation_m": 258.8035350239735,
   "end_elevation_m": 263.9581105035676,
   "min_gradient_pct": 4.347225510727981
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.385924296102644,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 145.0,
   "end_distance_m": 195.0,
   "start_elevation_m": 253.5699012126869,
   "end_elevation_m": 263.7628633607382,
   "min_gradient_pct": 8.002778690970672
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.00812749003643,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 102.0,
   "end_distance_m": 202.0,
   "start_elevation_m": 246.0897749748778,
   "end_elevation_m": 265.0979024649142,
   "min_gradient_pct": 13.252799393948267
  }
 ],
 "shape": {
  "ascent_concentration": 0.317,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 176.0,
  "shape_class": "sustained"
 },
 "length_m": 206.49113211192588,
 "start_elevation_m": 232.4888572412166,
 "end_elevation_m": 265.8679353924423,
 "endpoint_gain_m": 33.379078151225684,
 "overall_gradient_pct": 16.164896676111486,
 "accumulated_ascent_m": 33.396248492165796,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.934135280366718,
   "start_distance_m": 178.0,
   "end_distance_m": 183.0,
   "midpoint_distance_m": 180.5,
   "start_elevation_m": 260.2025321425933,
   "end_elevation_m": 261.29923890661166,
   "start_xy": [
    586844.0401799204,
    4482487.10267979
   ],
   "end_xy": [
    586839.1995193576,
    4482488.35487998
   ]
  },
  "max_10m": {
   "gradient_pct": 21.458358787868974,
   "start_distance_m": 175.0,
   "end_distance_m": 185.0,
   "midpoint_distance_m": 180.0,
   "start_elevation_m": 259.58009126540856,
   "end_elevation_m": 261.72592714419545,
   "start_xy": [
    586846.9445762581,
    4482486.351359676
   ],
   "end_xy": [
    586837.2632551326,
    4482488.8557600565
   ]
  },
  "max_20m": {
   "gradient_pct": 20.913860476648267,
   "start_distance_m": 175.0,
   "end_distance_m": 195.0,
   "midpoint_distance_m": 185.0,
   "start_elevation_m": 259.58009126540856,
   "end_elevation_m": 263.7628633607382,
   "start_xy": [
    586846.9445762581,
    4482486.351359676
   ],
   "end_xy": [
    586827.5819340071,
    4482491.3601604365
   ]
  },
  "max_25m": {
   "gradient_pct": 20.618301918376346,
   "start_distance_m": 171.0,
   "end_distance_m": 196.0,
   "midpoint_distance_m": 183.5,
   "start_elevation_m": 258.8035350239735,
   "end_elevation_m": 263.9581105035676,
   "start_xy": [
    586850.8171047083,
    4482485.3495995235
   ],
   "end_xy": [
    586826.6138018946,
    4482491.610600474
   ]
  },
  "max_50m": {
   "gradient_pct": 20.385924296102644,
   "start_distance_m": 145.0,
   "end_distance_m": 195.0,
   "midpoint_distance_m": 170.0,
   "start_elevation_m": 253.5699012126869,
   "end_elevation_m": 263.7628633607382,
   "start_xy": [
    586875.9885396345,
    4482478.838158535
   ],
   "end_xy": [
    586827.5819340071,
    4482491.3601604365
   ]
  },
  "max_100m": {
   "gradient_pct": 19.00812749003643,
   "start_distance_m": 102.0,
   "end_distance_m": 202.0,
   "midpoint_distance_m": 152.0,
   "start_elevation_m": 246.0897749748778,
   "end_elevation_m": 265.0979024649142,
   "start_xy": [
    586917.6190828853,
    4482468.072571485
   ],
   "end_xy": [
    586820.8050092193,
    4482493.113240703
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.24568711900030848,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 232.4888572412166,
   "end_elevation_m": 232.4765728852666,
   "start_xy": [
    587015.896,
    4482440.78
   ],
   "end_xy": [
    587011.087315455,
    4482442.149873333
   ]
  },
  "min_10m": {
   "gradient_pct": 2.504194394946353,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 232.4888572412166,
   "end_elevation_m": 232.73927668071124,
   "start_xy": [
    587015.896,
    4482440.78
   ],
   "end_xy": [
    587006.2786309101,
    4482443.519746665
   ]
  },
  "min_20m": {
   "gradient_pct": 4.0963766571670135,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 232.4888572412166,
   "end_elevation_m": 233.30813257265,
   "start_xy": [
    587015.896,
    4482440.78
   ],
   "end_xy": [
    586996.6612618201,
    4482446.2594933305
   ]
  },
  "min_25m": {
   "gradient_pct": 4.347225510727981,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 232.4888572412166,
   "end_elevation_m": 233.5756636188986,
   "start_xy": [
    587015.896,
    4482440.78
   ],
   "end_xy": [
    586991.8525772752,
    4482447.629366663
   ]
  },
  "min_50m": {
   "gradient_pct": 8.002778690970672,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 232.4888572412166,
   "end_elevation_m": 236.49024658670194,
   "start_xy": [
    587015.896,
    4482440.78
   ],
   "end_xy": [
    586967.8036844701,
    4482454.45927721
   ]
  },
  "min_100m": {
   "gradient_pct": 13.252799393948267,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 232.4888572412166,
   "end_elevation_m": 245.74165663516487,
   "start_xy": [
    587015.896,
    4482440.78
   ],
   "end_xy": [
    586919.5554011752,
    4482467.571900455
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 22.168293698948105,
   "start_distance_m": 182.0,
   "end_distance_m": 184.0,
   "midpoint_distance_m": 183.0,
   "start_elevation_m": 261.0738536514172,
   "end_elevation_m": 261.5172195253962,
   "start_xy": [
    586840.1676514703,
    4482488.104439942
   ],
   "end_xy": [
    586838.2313872451,
    4482488.605320018
   ]
  },
  "max_3m": {
   "gradient_pct": 22.04422023096413,
   "start_distance_m": 181.0,
   "end_distance_m": 184.0,
   "midpoint_distance_m": 182.5,
   "start_elevation_m": 260.85589291846725,
   "end_elevation_m": 261.5172195253962,
   "start_xy": [
    586841.1357835828,
    4482487.853999904
   ],
   "end_xy": [
    586838.2313872451,
    4482488.605320018
   ]
  }
 },
 "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_x58y449_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-07T11:18:32+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": [
   "x58y449"
  ],
  "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": "Millvale",
  "county": "Pennsylvania"
 }
}