{
 "ocl_version": "0.1.0",
 "name": "Demming Drive",
 "slug": "demming-drive",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.394485047010562,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 212.0,
   "end_distance_m": 214.0,
   "start_elevation_m": 386.99074489374067,
   "end_elevation_m": 387.4986345946809,
   "min_gradient_pct": -3.6195528505857055
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.274831428690884,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 212.0,
   "end_distance_m": 215.0,
   "start_elevation_m": 386.99074489374067,
   "end_elevation_m": 387.7189898366014,
   "min_gradient_pct": -2.152690107561739
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.64599739525238,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 211.0,
   "end_distance_m": 216.0,
   "start_elevation_m": 386.8001544477712,
   "end_elevation_m": 387.9324543175338,
   "min_gradient_pct": -1.6539745318505084
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.58434190254752,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 211.0,
   "end_distance_m": 221.0,
   "start_elevation_m": 386.8001544477712,
   "end_elevation_m": 388.95858863802596,
   "min_gradient_pct": 3.1597781125640267
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.871556487466876,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 212.0,
   "end_distance_m": 232.0,
   "start_elevation_m": 386.99074489374067,
   "end_elevation_m": 391.16505619123404,
   "min_gradient_pct": 7.579491892171575
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.580433487592472,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 209.0,
   "end_distance_m": 234.0,
   "start_elevation_m": 386.4235583346897,
   "end_elevation_m": 391.5686667065878,
   "min_gradient_pct": 8.47644477024869
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.59528156742749,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 192.0,
   "end_distance_m": 242.0,
   "start_elevation_m": 383.21503508464343,
   "end_elevation_m": 393.0126758683572,
   "min_gradient_pct": 9.109550258379613
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.421029749298782,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 176.0,
   "end_distance_m": 276.0,
   "start_elevation_m": 380.6903715019064,
   "end_elevation_m": 398.11140125120517,
   "min_gradient_pct": 9.25390050667562
  }
 ],
 "shape": {
  "ascent_concentration": 0.36,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 155.0,
  "shape_class": "sustained"
 },
 "length_m": 312.00000000000955,
 "start_elevation_m": 363.06666056549125,
 "end_elevation_m": 402.7717520591462,
 "endpoint_gain_m": 39.70509149365495,
 "overall_gradient_pct": 12.725990863350555,
 "accumulated_ascent_m": 39.795600574032335,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.64599739525238,
   "start_distance_m": 211.0,
   "end_distance_m": 216.0,
   "midpoint_distance_m": 213.5,
   "start_elevation_m": 386.8001544477712,
   "end_elevation_m": 387.9324543175338,
   "start_xy": [
    447737.28474930837,
    4601073.02908422
   ],
   "end_xy": [
    447733.18071278057,
    4601075.885109626
   ]
  },
  "max_10m": {
   "gradient_pct": 21.58434190254752,
   "start_distance_m": 211.0,
   "end_distance_m": 221.0,
   "midpoint_distance_m": 216.0,
   "start_elevation_m": 386.8001544477712,
   "end_elevation_m": 388.95858863802596,
   "start_xy": [
    447737.28474930837,
    4601073.02908422
   ],
   "end_xy": [
    447729.0763579166,
    4601078.740677597
   ]
  },
  "max_20m": {
   "gradient_pct": 20.871556487466876,
   "start_distance_m": 212.0,
   "end_distance_m": 232.0,
   "midpoint_distance_m": 222.0,
   "start_elevation_m": 386.99074489374067,
   "end_elevation_m": 391.16505619123404,
   "start_xy": [
    447736.46378296753,
    4601073.60006081
   ],
   "end_xy": [
    447720.04731070675,
    4601085.023693771
   ]
  },
  "max_25m": {
   "gradient_pct": 20.580433487592472,
   "start_distance_m": 209.0,
   "end_distance_m": 234.0,
   "midpoint_distance_m": 221.5,
   "start_elevation_m": 386.4235583346897,
   "end_elevation_m": 391.5686667065878,
   "start_xy": [
    447738.9266819905,
    4601071.887131039
   ],
   "end_xy": [
    447718.4057041728,
    4601086.166115612
   ]
  },
  "max_50m": {
   "gradient_pct": 19.59528156742749,
   "start_distance_m": 192.0,
   "end_distance_m": 242.0,
   "midpoint_distance_m": 217.0,
   "start_elevation_m": 383.21503508464343,
   "end_elevation_m": 393.0126758683572,
   "start_xy": [
    447752.880724257,
    4601062.177101643
   ],
   "end_xy": [
    447711.83876862156,
    4601090.735070788
   ]
  },
  "max_100m": {
   "gradient_pct": 17.421029749298782,
   "start_distance_m": 176.0,
   "end_distance_m": 276.0,
   "midpoint_distance_m": 226.0,
   "start_elevation_m": 380.6903715019064,
   "end_elevation_m": 398.11140125120517,
   "start_xy": [
    447766.61114411306,
    4601054.442976054
   ],
   "end_xy": [
    447685.3529854694,
    4601112.000685139
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -1.6539745318505084,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 363.06666056549125,
   "end_elevation_m": 362.9839618388987,
   "start_xy": [
    447940.349,
    4601026.318
   ],
   "end_xy": [
    447935.4124352232,
    4601027.111929959
   ]
  },
  "min_10m": {
   "gradient_pct": 3.1597781125640267,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 363.06666056549125,
   "end_elevation_m": 363.38263837674765,
   "start_xy": [
    447940.349,
    4601026.318
   ],
   "end_xy": [
    447930.4758956874,
    4601027.906016682
   ]
  },
  "min_20m": {
   "gradient_pct": 7.579491892171575,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 363.06666056549125,
   "end_elevation_m": 364.58255894392556,
   "start_xy": [
    447940.349,
    4601026.318
   ],
   "end_xy": [
    447920.60263517464,
    4601029.493058711
   ]
  },
  "min_25m": {
   "gradient_pct": 8.47644477024869,
   "start_distance_m": 77.0,
   "end_distance_m": 102.0,
   "midpoint_distance_m": 89.5,
   "start_elevation_m": 371.13738241075765,
   "end_elevation_m": 373.2564936033198,
   "start_xy": [
    447864.3254864607,
    4601038.541921713
   ],
   "end_xy": [
    447839.6425820499,
    4601042.511066838
   ]
  },
  "min_50m": {
   "gradient_pct": 9.109550258379613,
   "start_distance_m": 77.0,
   "end_distance_m": 127.0,
   "midpoint_distance_m": 102.0,
   "start_elevation_m": 371.13738241075765,
   "end_elevation_m": 375.69215753994746,
   "start_xy": [
    447864.3254864607,
    4601038.541921713
   ],
   "end_xy": [
    447814.95949597197,
    4601046.479081114
   ]
  },
  "min_100m": {
   "gradient_pct": 9.25390050667562,
   "start_distance_m": 62.0,
   "end_distance_m": 162.0,
   "midpoint_distance_m": 112.0,
   "start_elevation_m": 369.6370615724157,
   "end_elevation_m": 378.8909620790913,
   "start_xy": [
    447879.1353119212,
    4601036.160949802
   ],
   "end_xy": [
    447780.4216037356,
    4601052.147065843
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.394485047010562,
   "start_distance_m": 212.0,
   "end_distance_m": 214.0,
   "midpoint_distance_m": 213.0,
   "start_elevation_m": 386.99074489374067,
   "end_elevation_m": 387.4986345946809,
   "start_xy": [
    447736.46378296753,
    4601073.60006081
   ],
   "end_xy": [
    447734.8223193145,
    4601074.742687785
   ]
  },
  "max_3m": {
   "gradient_pct": 24.274831428690884,
   "start_distance_m": 212.0,
   "end_distance_m": 215.0,
   "midpoint_distance_m": 213.5,
   "start_elevation_m": 386.99074489374067,
   "end_elevation_m": 387.7189898366014,
   "start_xy": [
    447736.46378296753,
    4601073.60006081
   ],
   "end_xy": [
    447734.0013607846,
    4601075.3136756
   ]
  }
 },
 "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:26918",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/pa/USGS_1M_18_x44y461_PA_Northcentral_2019_B19.tif"
  ],
  "calculated_at": "2026-09-08T18:07:31+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.osm.pbf",
  "osm_snapshot": "2026-09-06T20:21:35Z",
  "run_id": "retro-box-260908",
  "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_Northcentral_2019_B19 (collected 2019)",
  "elevation_tile_ids": [
   "x44y461"
  ],
  "route_cut_m": 423.1,
  "route_summit_trim_m": 111.1,
  "route_summit_trim_loss_m": 4.1,
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 EPT corridor failed: PA_Northcentral_2019_B19: HTTP Error 404: Not Found",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Scott",
  "county": "Pennsylvania"
 }
}