{
 "ocl_version": "0.1.0",
 "name": "17th Street",
 "slug": "17th-street",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 37.2161742403506,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 358.0,
   "end_distance_m": 360.0,
   "start_elevation_m": 259.00630872288104,
   "end_elevation_m": 259.75063220768806,
   "min_gradient_pct": 0.15050200786532741
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 34.90092211328791,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 358.0,
   "end_distance_m": 361.0,
   "start_elevation_m": 259.00630872288104,
   "end_elevation_m": 260.0533363862797,
   "min_gradient_pct": 0.18024095936747622
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 31.93980752126663,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 357.0,
   "end_distance_m": 362.0,
   "start_elevation_m": 258.7125008530029,
   "end_elevation_m": 260.3094912290662,
   "min_gradient_pct": 0.373522258097978
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 29.194644017361497,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 164.0,
   "end_distance_m": 174.0,
   "start_elevation_m": 241.97611481453197,
   "end_elevation_m": 244.89557921626812,
   "min_gradient_pct": 0.7112579298637911
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 28.710440289292052,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 163.0,
   "end_distance_m": 183.0,
   "start_elevation_m": 241.692842853827,
   "end_elevation_m": 247.4349309116854,
   "min_gradient_pct": 1.66395188460001
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 28.26249255445225,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 162.0,
   "end_distance_m": 187.0,
   "start_elevation_m": 241.433993371408,
   "end_elevation_m": 248.49961651002107,
   "min_gradient_pct": 1.99493180110926
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 23.843210869455962,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 154.0,
   "end_distance_m": 204.0,
   "start_elevation_m": 240.37787049968236,
   "end_elevation_m": 252.29947593441034,
   "min_gradient_pct": 2.774763567081891
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.949682236233485,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 107.0,
   "end_distance_m": 207.0,
   "start_elevation_m": 231.4825982123982,
   "end_elevation_m": 252.43228044863167,
   "min_gradient_pct": 3.085150596865674
  }
 ],
 "shape": {
  "ascent_concentration": 0.434,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 106.0,
  "shape_class": "sustained"
 },
 "length_m": 584.579737970801,
 "start_elevation_m": 228.24240297155768,
 "end_elevation_m": 280.62079479882505,
 "endpoint_gain_m": 52.378391827267365,
 "overall_gradient_pct": 8.960008092152451,
 "accumulated_ascent_m": 52.378391827267365,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 31.93980752126663,
   "start_distance_m": 357.0,
   "end_distance_m": 362.0,
   "midpoint_distance_m": 359.5,
   "start_elevation_m": 258.7125008530029,
   "end_elevation_m": 260.3094912290662,
   "start_xy": [
    563753.2577249294,
    4503068.738376824
   ],
   "end_xy": [
    563757.5896851722,
    4503066.241554753
   ]
  },
  "max_10m": {
   "gradient_pct": 29.194644017361497,
   "start_distance_m": 164.0,
   "end_distance_m": 174.0,
   "midpoint_distance_m": 169.0,
   "start_elevation_m": 241.97611481453197,
   "end_elevation_m": 244.89557921626812,
   "start_xy": [
    563655.6258930503,
    4503192.7207354065
   ],
   "end_xy": [
    563664.8702379126,
    4503196.5341443885
   ]
  },
  "max_20m": {
   "gradient_pct": 28.710440289292052,
   "start_distance_m": 163.0,
   "end_distance_m": 183.0,
   "midpoint_distance_m": 173.0,
   "start_elevation_m": 241.692842853827,
   "end_elevation_m": 247.4349309116854,
   "start_xy": [
    563654.701458564,
    4503192.339394508
   ],
   "end_xy": [
    563673.1901482886,
    4503199.966212473
   ]
  },
  "max_25m": {
   "gradient_pct": 28.26249255445225,
   "start_distance_m": 162.0,
   "end_distance_m": 187.0,
   "midpoint_distance_m": 174.5,
   "start_elevation_m": 241.433993371408,
   "end_elevation_m": 248.49961651002107,
   "start_xy": [
    563653.7770240778,
    4503191.95805361
   ],
   "end_xy": [
    563676.8878862336,
    4503201.491576066
   ]
  },
  "max_50m": {
   "gradient_pct": 23.843210869455962,
   "start_distance_m": 154.0,
   "end_distance_m": 204.0,
   "midpoint_distance_m": 179.0,
   "start_elevation_m": 240.37787049968236,
   "end_elevation_m": 252.29947593441034,
   "start_xy": [
    563646.3814792024,
    4503188.9074936975
   ],
   "end_xy": [
    563692.6032724995,
    4503207.974371336
   ]
  },
  "max_100m": {
   "gradient_pct": 20.949682236233485,
   "start_distance_m": 107.0,
   "end_distance_m": 207.0,
   "midpoint_distance_m": 157.0,
   "start_elevation_m": 231.4825982123982,
   "end_elevation_m": 252.43228044863167,
   "start_xy": [
    563602.9299569918,
    4503170.9919915395
   ],
   "end_xy": [
    563693.9163315741,
    4503205.601637844
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.373522258097978,
   "start_distance_m": 5.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 7.5,
   "start_elevation_m": 228.3123415466016,
   "end_elevation_m": 228.3310176595065,
   "start_xy": [
    563563.4764719515,
    4503265.032960398
   ],
   "end_xy": [
    563565.4099439031,
    4503260.421920796
   ]
  },
  "min_10m": {
   "gradient_pct": 0.7112579298637911,
   "start_distance_m": 2.0,
   "end_distance_m": 12.0,
   "midpoint_distance_m": 7.0,
   "start_elevation_m": 228.2730816833905,
   "end_elevation_m": 228.34420747637688,
   "start_xy": [
    563562.3163887806,
    4503267.79958416
   ],
   "end_xy": [
    563566.1833326838,
    4503258.577504955
   ]
  },
  "min_20m": {
   "gradient_pct": 1.66395188460001,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 228.24240297155768,
   "end_elevation_m": 228.57519334847768,
   "start_xy": [
    563561.543,
    4503269.644
   ],
   "end_xy": [
    563569.2768878062,
    4503251.1998415915
   ]
  },
  "min_25m": {
   "gradient_pct": 1.99493180110926,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 228.24240297155768,
   "end_elevation_m": 228.741135921835,
   "start_xy": [
    563561.543,
    4503269.644
   ],
   "end_xy": [
    563571.2103597578,
    4503246.588801989
   ]
  },
  "min_50m": {
   "gradient_pct": 2.774763567081891,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 228.24240297155768,
   "end_elevation_m": 229.62978475509863,
   "start_xy": [
    563561.543,
    4503269.644
   ],
   "end_xy": [
    563580.8777195156,
    4503223.533603979
   ]
  },
  "min_100m": {
   "gradient_pct": 3.085150596865674,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 228.24240297155768,
   "end_elevation_m": 231.32755356842335,
   "start_xy": [
    563561.543,
    4503269.644
   ],
   "end_xy": [
    563600.2124390312,
    4503177.423207957
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 37.2161742403506,
   "start_distance_m": 358.0,
   "end_distance_m": 360.0,
   "midpoint_distance_m": 359.0,
   "start_elevation_m": 259.00630872288104,
   "end_elevation_m": 259.75063220768806,
   "start_xy": [
    563754.1241169779,
    4503068.23901241
   ],
   "end_xy": [
    563755.856901075,
    4503067.240283581
   ]
  },
  "max_3m": {
   "gradient_pct": 34.90092211328791,
   "start_distance_m": 358.0,
   "end_distance_m": 361.0,
   "midpoint_distance_m": 359.5,
   "start_elevation_m": 259.00630872288104,
   "end_elevation_m": 260.0533363862797,
   "start_xy": [
    563754.1241169779,
    4503068.23901241
   ],
   "end_xy": [
    563756.7232931235,
    4503066.740919167
   ]
  }
 },
 "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": []
 },
 "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": "2026-09-07T11:44:40+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"
 }
}