{
 "ocl_version": "0.1.0",
 "name": "Pine Hollow Road",
 "slug": "pine-hollow-road-6",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 23.6612568971708,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1968.0,
   "end_distance_m": 1970.0,
   "start_elevation_m": 273.3065428191652,
   "end_elevation_m": 273.7797679571086,
   "min_gradient_pct": -13.439973267458072
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 23.080987229485572,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1967.0,
   "end_distance_m": 1970.0,
   "start_elevation_m": 273.08733834022405,
   "end_elevation_m": 273.7797679571086,
   "min_gradient_pct": -13.324082044319615
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.20134903791427,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1968.0,
   "end_distance_m": 1973.0,
   "start_elevation_m": 273.3065428191652,
   "end_elevation_m": 274.4666102710609,
   "min_gradient_pct": -12.5651075357041
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.703503407684025,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1963.0,
   "end_distance_m": 1973.0,
   "start_elevation_m": 272.1962599302925,
   "end_elevation_m": 274.4666102710609,
   "min_gradient_pct": -10.980688262901879
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.820142110302356,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1956.0,
   "end_distance_m": 1976.0,
   "start_elevation_m": 270.71605831086214,
   "end_elevation_m": 275.0800867329226,
   "min_gradient_pct": -9.722545322415641
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.32628850879337,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1952.0,
   "end_distance_m": 1977.0,
   "start_elevation_m": 269.9470819307061,
   "end_elevation_m": 275.2786540579044,
   "min_gradient_pct": -9.287376055552386
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.208923412635386,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1927.0,
   "end_distance_m": 1977.0,
   "start_elevation_m": 265.1741923515867,
   "end_elevation_m": 275.2786540579044,
   "min_gradient_pct": -7.082511942928647
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.62121426691624,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1877.0,
   "end_distance_m": 1977.0,
   "start_elevation_m": 256.6574397909882,
   "end_elevation_m": 275.2786540579044,
   "min_gradient_pct": -6.0396309005758155
  }
 ],
 "shape": {
  "ascent_concentration": 0.358,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 183.0,
  "shape_class": "sustained"
 },
 "length_m": 1979.3046912873278,
 "start_elevation_m": 179.77901398924234,
 "end_elevation_m": 275.4236582401153,
 "endpoint_gain_m": 95.64464425087294,
 "overall_gradient_pct": 4.832234504969836,
 "accumulated_ascent_m": 107.13878826161718,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.20134903791427,
   "start_distance_m": 1968.0,
   "end_distance_m": 1973.0,
   "midpoint_distance_m": 1970.5,
   "start_elevation_m": 273.3065428191652,
   "end_elevation_m": 274.4666102710609,
   "start_xy": [
    330328.43545863684,
    4520701.874329989
   ],
   "end_xy": [
    330325.89819357864,
    4520706.179376862
   ]
  },
  "max_10m": {
   "gradient_pct": 22.703503407684025,
   "start_distance_m": 1963.0,
   "end_distance_m": 1973.0,
   "midpoint_distance_m": 1968.0,
   "start_elevation_m": 272.1962599302925,
   "end_elevation_m": 274.4666102710609,
   "start_xy": [
    330331.22585538577,
    4520697.725392055
   ],
   "end_xy": [
    330325.89819357864,
    4520706.179376862
   ]
  },
  "max_20m": {
   "gradient_pct": 21.820142110302356,
   "start_distance_m": 1956.0,
   "end_distance_m": 1976.0,
   "midpoint_distance_m": 1966.0,
   "start_elevation_m": 270.71605831086214,
   "end_elevation_m": 275.0800867329226,
   "start_xy": [
    330335.1324108343,
    4520691.916878946
   ],
   "end_xy": [
    330324.42538859695,
    4520708.792965484
   ]
  },
  "max_25m": {
   "gradient_pct": 21.32628850879337,
   "start_distance_m": 1952.0,
   "end_distance_m": 1977.0,
   "midpoint_distance_m": 1964.5,
   "start_elevation_m": 269.9470819307061,
   "end_elevation_m": 275.2786540579044,
   "start_xy": [
    330337.3647282334,
    4520688.597728599
   ],
   "end_xy": [
    330323.9344536031,
    4520709.664161691
   ]
  },
  "max_50m": {
   "gradient_pct": 20.208923412635386,
   "start_distance_m": 1927.0,
   "end_distance_m": 1977.0,
   "midpoint_distance_m": 1952.0,
   "start_elevation_m": 265.1741923515867,
   "end_elevation_m": 275.2786540579044,
   "start_xy": [
    330348.9800658641,
    4520666.492461436
   ],
   "end_xy": [
    330323.9344536031,
    4520709.664161691
   ]
  },
  "max_100m": {
   "gradient_pct": 18.62121426691624,
   "start_distance_m": 1877.0,
   "end_distance_m": 1977.0,
   "midpoint_distance_m": 1927.0,
   "start_elevation_m": 256.6574397909882,
   "end_elevation_m": 275.2786540579044,
   "start_xy": [
    330371.28958388756,
    4520621.745557571
   ],
   "end_xy": [
    330323.9344536031,
    4520709.664161691
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -12.5651075357041,
   "start_distance_m": 1474.0,
   "end_distance_m": 1479.0,
   "midpoint_distance_m": 1476.5,
   "start_elevation_m": 247.0299232928746,
   "end_elevation_m": 246.4016679160894,
   "start_xy": [
    330602.01594250876,
    4520466.4893919
   ],
   "end_xy": [
    330600.99223611923,
    4520471.383472531
   ]
  },
  "min_10m": {
   "gradient_pct": -10.980688262901879,
   "start_distance_m": 1474.0,
   "end_distance_m": 1484.0,
   "midpoint_distance_m": 1479.0,
   "start_elevation_m": 247.0299232928746,
   "end_elevation_m": 245.9318544665844,
   "start_xy": [
    330602.01594250876,
    4520466.4893919
   ],
   "end_xy": [
    330599.9685297297,
    4520476.277553163
   ]
  },
  "min_20m": {
   "gradient_pct": -9.722545322415641,
   "start_distance_m": 1531.0,
   "end_distance_m": 1551.0,
   "midpoint_distance_m": 1541.0,
   "start_elevation_m": 243.90572054956633,
   "end_elevation_m": 241.9612114850832,
   "start_xy": [
    330616.5544584171,
    4520517.916829941
   ],
   "end_xy": [
    330611.35602875106,
    4520536.641806634
   ]
  },
  "min_25m": {
   "gradient_pct": -9.287376055552386,
   "start_distance_m": 1527.0,
   "end_distance_m": 1552.0,
   "midpoint_distance_m": 1539.5,
   "start_elevation_m": 244.20468413789496,
   "end_elevation_m": 241.88284012400686,
   "start_xy": [
    330614.95387587394,
    4520514.363313924
   ],
   "end_xy": [
    330610.87377804396,
    4520537.517839884
   ]
  },
  "min_50m": {
   "gradient_pct": -7.082511942928647,
   "start_distance_m": 1706.0,
   "end_distance_m": 1756.0,
   "midpoint_distance_m": 1731.0,
   "start_elevation_m": 245.66851408595696,
   "end_elevation_m": 242.12725811449263,
   "start_xy": [
    330482.2094212539,
    4520533.410442415
   ],
   "end_xy": [
    330434.7798079297,
    4520521.966774859
   ]
  },
  "min_100m": {
   "gradient_pct": -6.0396309005758155,
   "start_distance_m": 1474.0,
   "end_distance_m": 1574.0,
   "midpoint_distance_m": 1524.0,
   "start_elevation_m": 247.0299232928746,
   "end_elevation_m": 240.99029239229878,
   "start_xy": [
    330602.01594250876,
    4520466.4893919
   ],
   "end_xy": [
    330600.2076820496,
    4520556.755416409
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 23.6612568971708,
   "start_distance_m": 1968.0,
   "end_distance_m": 1970.0,
   "midpoint_distance_m": 1969.0,
   "start_elevation_m": 273.3065428191652,
   "end_elevation_m": 273.7797679571086,
   "start_xy": [
    330328.43545863684,
    4520701.874329989
   ],
   "end_xy": [
    330327.37099856033,
    4520703.56578824
   ]
  },
  "max_3m": {
   "gradient_pct": 23.080987229485572,
   "start_distance_m": 1967.0,
   "end_distance_m": 1970.0,
   "midpoint_distance_m": 1968.5,
   "start_elevation_m": 273.08733834022405,
   "end_elevation_m": 273.7797679571086,
   "start_xy": [
    330328.99353798665,
    4520701.044542402
   ],
   "end_xy": [
    330327.37099856033,
    4520703.56578824
   ]
  }
 },
 "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:26918",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/pa/USGS_one_meter_x32y452_PA_South_Central_B2_2017.tif",
   "data/cache/usa/pa/USGS_one_meter_x32y453_PA_South_Central_B2_2017.tif",
   "data/cache/usa/pa/USGS_one_meter_x33y452_PA_South_Central_B2_2017.tif",
   "data/cache/usa/pa/USGS_one_meter_x33y453_PA_South_Central_B2_2017.tif"
  ],
  "calculated_at": "2026-09-07T12:04:23+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_South_Central_B2_2017 (collected 2017)",
  "elevation_tile_ids": [
   "x32y452",
   "x32y453",
   "x33y452",
   "x33y453"
  ],
  "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": "Franklin",
  "county": "Pennsylvania"
 }
}