{
 "ocl_version": "0.1.0",
 "name": "Evergreen Road",
 "slug": "evergreen-road-3-2",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 48.79371406681514,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 168.0,
   "end_distance_m": 170.0,
   "start_elevation_m": 228.27460519236394,
   "end_elevation_m": 229.25047947370024,
   "min_gradient_pct": -12.888632041185133
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 47.754565241469514,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 168.0,
   "end_distance_m": 171.0,
   "start_elevation_m": 228.27460519236394,
   "end_elevation_m": 229.70724214960802,
   "min_gradient_pct": -9.979692001580057
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 42.52546679042496,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 167.0,
   "end_distance_m": 172.0,
   "start_elevation_m": 227.96732970492712,
   "end_elevation_m": 230.09360304444837,
   "min_gradient_pct": -6.2291887451851835
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 31.698023115302476,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 164.0,
   "end_distance_m": 174.0,
   "start_elevation_m": 227.33452511131884,
   "end_elevation_m": 230.5043274228491,
   "min_gradient_pct": -3.996939989124826
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 25.061371006304398,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 154.0,
   "end_distance_m": 174.0,
   "start_elevation_m": 225.4920532215882,
   "end_elevation_m": 230.5043274228491,
   "min_gradient_pct": -3.603178162904044
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.482947707896074,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 166.0,
   "end_distance_m": 191.0,
   "start_elevation_m": 227.67515065068602,
   "end_elevation_m": 233.54588757766004,
   "min_gradient_pct": -3.5524882647084723
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.297439728754117,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 144.0,
   "end_distance_m": 194.0,
   "start_elevation_m": 223.54731177864468,
   "end_elevation_m": 234.19603164302174,
   "min_gradient_pct": -3.1687589371457534
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.978931908515904,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 144.0,
   "end_distance_m": 244.0,
   "start_elevation_m": 223.54731177864468,
   "end_elevation_m": 242.5262436871606,
   "min_gradient_pct": -2.26804375974541
  }
 ],
 "shape": {
  "ascent_concentration": 0.461,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 133.0,
  "shape_class": "stepped"
 },
 "length_m": 1351.999999999617,
 "start_elevation_m": 216.20124944494825,
 "end_elevation_m": 296.552684839186,
 "endpoint_gain_m": 80.35143539423774,
 "overall_gradient_pct": 5.94315350549264,
 "accumulated_ascent_m": 84.66836295539295,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 42.52546679042496,
   "start_distance_m": 167.0,
   "end_distance_m": 172.0,
   "midpoint_distance_m": 169.5,
   "start_elevation_m": 227.96732970492712,
   "end_elevation_m": 230.09360304444837,
   "start_xy": [
    361121.4768297835,
    4408585.966801372
   ],
   "end_xy": [
    361126.0251203942,
    4408588.043590366
   ]
  },
  "max_10m": {
   "gradient_pct": 31.698023115302476,
   "start_distance_m": 164.0,
   "end_distance_m": 174.0,
   "midpoint_distance_m": 169.0,
   "start_elevation_m": 227.33452511131884,
   "end_elevation_m": 230.5043274228491,
   "start_xy": [
    361118.74785541714,
    4408584.720727976
   ],
   "end_xy": [
    361127.99126987066,
    4408587.781254617
   ]
  },
  "max_20m": {
   "gradient_pct": 25.061371006304398,
   "start_distance_m": 154.0,
   "end_distance_m": 174.0,
   "midpoint_distance_m": 164.0,
   "start_elevation_m": 225.4920532215882,
   "end_elevation_m": 230.5043274228491,
   "start_xy": [
    361109.6512741959,
    4408580.567149991
   ],
   "end_xy": [
    361127.99126987066,
    4408587.781254617
   ]
  },
  "max_25m": {
   "gradient_pct": 23.482947707896074,
   "start_distance_m": 166.0,
   "end_distance_m": 191.0,
   "midpoint_distance_m": 178.5,
   "start_elevation_m": 227.67515065068602,
   "end_elevation_m": 233.54588757766004,
   "start_xy": [
    361120.5671716614,
    4408585.551443574
   ],
   "end_xy": [
    361144.8532178967,
    4408585.969161491
   ]
  },
  "max_50m": {
   "gradient_pct": 21.297439728754117,
   "start_distance_m": 144.0,
   "end_distance_m": 194.0,
   "midpoint_distance_m": 169.0,
   "start_elevation_m": 223.54731177864468,
   "end_elevation_m": 234.19603164302174,
   "start_xy": [
    361100.55469297455,
    4408576.413572005
   ],
   "end_xy": [
    361147.8527244729,
    4408585.914752856
   ]
  },
  "max_100m": {
   "gradient_pct": 18.978931908515904,
   "start_distance_m": 144.0,
   "end_distance_m": 244.0,
   "midpoint_distance_m": 194.0,
   "start_elevation_m": 223.54731177864468,
   "end_elevation_m": 242.5262436871606,
   "start_xy": [
    361100.55469297455,
    4408576.413572005
   ],
   "end_xy": [
    361197.4903660398,
    4408580.812306358
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -6.2291887451851835,
   "start_distance_m": 502.0,
   "end_distance_m": 507.0,
   "midpoint_distance_m": 504.5,
   "start_elevation_m": 262.740307619075,
   "end_elevation_m": 262.42884818181574,
   "start_xy": [
    361443.6753139425,
    4408607.82214663
   ],
   "end_xy": [
    361448.1975195582,
    4408609.95513898
   ]
  },
  "min_10m": {
   "gradient_pct": -3.996939989124826,
   "start_distance_m": 502.0,
   "end_distance_m": 512.0,
   "midpoint_distance_m": 507.0,
   "start_elevation_m": 262.740307619075,
   "end_elevation_m": 262.3406136201625,
   "start_xy": [
    361443.6753139425,
    4408607.82214663
   ],
   "end_xy": [
    361452.7197251739,
    4408612.088131332
   ]
  },
  "min_20m": {
   "gradient_pct": -3.603178162904044,
   "start_distance_m": 935.0,
   "end_distance_m": 955.0,
   "midpoint_distance_m": 945.0,
   "start_elevation_m": 281.9901644167191,
   "end_elevation_m": 281.2695287841383,
   "start_xy": [
    361825.60284393985,
    4408802.557610734
   ],
   "end_xy": [
    361834.8573391466,
    4408820.287275786
   ]
  },
  "min_25m": {
   "gradient_pct": -3.5524882647084723,
   "start_distance_m": 935.0,
   "end_distance_m": 960.0,
   "midpoint_distance_m": 947.5,
   "start_elevation_m": 281.9901644167191,
   "end_elevation_m": 281.102042350542,
   "start_xy": [
    361825.60284393985,
    4408802.557610734
   ],
   "end_xy": [
    361837.2232212245,
    4408824.692114261
   ]
  },
  "min_50m": {
   "gradient_pct": -3.1687589371457534,
   "start_distance_m": 929.0,
   "end_distance_m": 979.0,
   "midpoint_distance_m": 954.0,
   "start_elevation_m": 282.155037038787,
   "end_elevation_m": 280.5706575702141,
   "start_xy": [
    361822.84142052307,
    4408797.230834907
   ],
   "end_xy": [
    361846.0231058672,
    4408841.526155961
   ]
  },
  "min_100m": {
   "gradient_pct": -2.26804375974541,
   "start_distance_m": 909.0,
   "end_distance_m": 1009.0,
   "midpoint_distance_m": 959.0,
   "start_elevation_m": 282.425559137185,
   "end_elevation_m": 280.1575153774396,
   "start_xy": [
    361810.5495680996,
    4408781.6296041645
   ],
   "end_xy": [
    361858.7454314802,
    4408868.694932728
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 48.79371406681514,
   "start_distance_m": 168.0,
   "end_distance_m": 170.0,
   "midpoint_distance_m": 169.0,
   "start_elevation_m": 228.27460519236394,
   "end_elevation_m": 229.25047947370024,
   "start_xy": [
    361122.38648790563,
    4408586.382159171
   ],
   "end_xy": [
    361124.2058041499,
    4408587.212874768
   ]
  },
  "max_3m": {
   "gradient_pct": 47.754565241469514,
   "start_distance_m": 168.0,
   "end_distance_m": 171.0,
   "midpoint_distance_m": 169.5,
   "start_elevation_m": 228.27460519236394,
   "end_elevation_m": 229.70724214960802,
   "start_xy": [
    361122.38648790563,
    4408586.382159171
   ],
   "end_xy": [
    361125.115462272,
    4408587.628232567
   ]
  }
 },
 "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": [
   "short_window_divergence"
  ],
  "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:26918",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/pa/USGS_one_meter_x36y441_PA_Sandy_2014.tif"
  ],
  "calculated_at": "2026-09-07T14:57:06+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-band3.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_Sandy_2014 (collected 2014)",
  "elevation_tile_ids": [
   "x36y441"
  ],
  "route_summit_trim_m": 307.9,
  "route_summit_trim_loss_m": 8.4,
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 no surface model (DSM or point cloud) registered for this coverage",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "North Hopewell",
  "county": "Pennsylvania"
 }
}