{
 "ocl_version": "0.1.0",
 "name": "Olde Cheney Road",
 "slug": "olde-cheney-road",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 56.135860712075214,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 279.0,
   "end_distance_m": 281.0,
   "start_elevation_m": 442.52702276268536,
   "end_elevation_m": 443.64973997692687,
   "min_gradient_pct": -13.853145874958273
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 54.69535810967159,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 278.0,
   "end_distance_m": 281.0,
   "start_elevation_m": 442.0088792336367,
   "end_elevation_m": 443.64973997692687,
   "min_gradient_pct": -13.32439953655277
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 53.31061773668807,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 276.0,
   "end_distance_m": 281.0,
   "start_elevation_m": 440.98420909009246,
   "end_elevation_m": 443.64973997692687,
   "min_gradient_pct": -13.14921983064437
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 49.24558453428119,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 273.0,
   "end_distance_m": 283.0,
   "start_elevation_m": 439.64138929104774,
   "end_elevation_m": 444.56594774447586,
   "min_gradient_pct": -12.82909050164676
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 39.30011864216425,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 265.0,
   "end_distance_m": 285.0,
   "start_elevation_m": 437.06834853885465,
   "end_elevation_m": 444.9283722672875,
   "min_gradient_pct": -12.015019148959993
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 34.584983468101655,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 260.0,
   "end_distance_m": 285.0,
   "start_elevation_m": 436.2821264002621,
   "end_elevation_m": 444.9283722672875,
   "min_gradient_pct": -11.263098211895795
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 24.73654994825347,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 235.0,
   "end_distance_m": 285.0,
   "start_elevation_m": 432.56009729316077,
   "end_elevation_m": 444.9283722672875,
   "min_gradient_pct": -6.758938980613948
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.315333808848607,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 191.0,
   "end_distance_m": 291.0,
   "start_elevation_m": 428.328144340981,
   "end_elevation_m": 445.6434781498296,
   "min_gradient_pct": -3.181291971207031
  }
 ],
 "shape": {
  "ascent_concentration": 0.49,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 83.0,
  "shape_class": "stepped"
 },
 "length_m": 934.4391495416345,
 "start_elevation_m": 416.520533395686,
 "end_elevation_m": 460.6897749355521,
 "endpoint_gain_m": 44.16924153986611,
 "overall_gradient_pct": 4.726818387428675,
 "accumulated_ascent_m": 55.26586262955152,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 53.31061773668807,
   "start_distance_m": 276.0,
   "end_distance_m": 281.0,
   "midpoint_distance_m": 278.5,
   "start_elevation_m": 440.98420909009246,
   "end_elevation_m": 443.64973997692687,
   "start_xy": [
    685692.974886201,
    4777179.091513199
   ],
   "end_xy": [
    685688.9196411758,
    4777182.016163589
   ]
  },
  "max_10m": {
   "gradient_pct": 49.24558453428119,
   "start_distance_m": 273.0,
   "end_distance_m": 283.0,
   "midpoint_distance_m": 278.0,
   "start_elevation_m": 439.64138929104774,
   "end_elevation_m": 444.56594774447586,
   "start_xy": [
    685695.4150720217,
    4777177.346380176
   ],
   "end_xy": [
    685687.4457480292,
    4777183.36806558
   ]
  },
  "max_20m": {
   "gradient_pct": 39.30011864216425,
   "start_distance_m": 265.0,
   "end_distance_m": 285.0,
   "midpoint_distance_m": 275.0,
   "start_elevation_m": 437.06834853885465,
   "end_elevation_m": 444.9283722672875,
   "start_xy": [
    685701.9215583287,
    4777172.6917457655
   ],
   "end_xy": [
    685685.9718548825,
    4777184.719967571
   ]
  },
  "max_25m": {
   "gradient_pct": 34.584983468101655,
   "start_distance_m": 260.0,
   "end_distance_m": 285.0,
   "midpoint_distance_m": 272.5,
   "start_elevation_m": 436.2821264002621,
   "end_elevation_m": 444.9283722672875,
   "start_xy": [
    685706.1975280808,
    4777170.192401571
   ],
   "end_xy": [
    685685.9718548825,
    4777184.719967571
   ]
  },
  "max_50m": {
   "gradient_pct": 24.73654994825347,
   "start_distance_m": 235.0,
   "end_distance_m": 285.0,
   "midpoint_distance_m": 260.0,
   "start_elevation_m": 432.56009729316077,
   "end_elevation_m": 444.9283722672875,
   "start_xy": [
    685730.3694689438,
    4777163.811403743
   ],
   "end_xy": [
    685685.9718548825,
    4777184.719967571
   ]
  },
  "max_100m": {
   "gradient_pct": 17.315333808848607,
   "start_distance_m": 191.0,
   "end_distance_m": 291.0,
   "midpoint_distance_m": 241.0,
   "start_elevation_m": 428.328144340981,
   "end_elevation_m": 445.6434781498296,
   "start_xy": [
    685772.4595476005,
    4777151.026420153
   ],
   "end_xy": [
    685680.6754533832,
    4777186.725052891
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -13.14921983064437,
   "start_distance_m": 891.0,
   "end_distance_m": 896.0,
   "midpoint_distance_m": 893.5,
   "start_elevation_m": 462.3659708848654,
   "end_elevation_m": 461.7085098933332,
   "start_xy": [
    685277.7360017372,
    4777624.2725717155
   ],
   "end_xy": [
    685273.7683974715,
    4777627.315286179
   ]
  },
  "min_10m": {
   "gradient_pct": -12.82909050164676,
   "start_distance_m": 886.0,
   "end_distance_m": 896.0,
   "midpoint_distance_m": 891.0,
   "start_elevation_m": 462.9914189434979,
   "end_elevation_m": 461.7085098933332,
   "start_xy": [
    685281.6925424205,
    4777621.215728299
   ],
   "end_xy": [
    685273.7683974715,
    4777627.315286179
   ]
  },
  "min_20m": {
   "gradient_pct": -12.015019148959993,
   "start_distance_m": 881.0,
   "end_distance_m": 901.0,
   "midpoint_distance_m": 891.0,
   "start_elevation_m": 463.5151350993152,
   "end_elevation_m": 461.1121312695232,
   "start_xy": [
    685285.5559907388,
    4777618.041813317
   ],
   "end_xy": [
    685269.8007736187,
    4777630.357974324
   ]
  },
  "min_25m": {
   "gradient_pct": -11.263098211895795,
   "start_distance_m": 879.0,
   "end_distance_m": 904.0,
   "midpoint_distance_m": 891.5,
   "start_elevation_m": 463.672789248683,
   "end_elevation_m": 460.85701469570904,
   "start_xy": [
    685287.101005142,
    4777616.77180147
   ],
   "end_xy": [
    685267.4201181974,
    4777632.18348239
   ]
  },
  "min_50m": {
   "gradient_pct": -6.758938980613948,
   "start_distance_m": 860.0,
   "end_distance_m": 910.0,
   "midpoint_distance_m": 885.0,
   "start_elevation_m": 463.981871137234,
   "end_elevation_m": 460.60240164692704,
   "start_xy": [
    685301.7779361906,
    4777604.705838963
   ],
   "end_xy": [
    685262.6585730381,
    4777635.834192484
   ]
  },
  "min_100m": {
   "gradient_pct": -3.181291971207031,
   "start_distance_m": 834.0,
   "end_distance_m": 934.0,
   "midpoint_distance_m": 884.0,
   "start_elevation_m": 463.87459233689583,
   "end_elevation_m": 460.6933003656888,
   "start_xy": [
    685320.10338404,
    4777586.315792343
   ],
   "end_xy": [
    685244.2860966647,
    4777651.274164581
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 56.135860712075214,
   "start_distance_m": 279.0,
   "end_distance_m": 281.0,
   "midpoint_distance_m": 280.0,
   "start_elevation_m": 442.52702276268536,
   "end_elevation_m": 443.64973997692687,
   "start_xy": [
    685690.5351738004,
    4777180.8373089265
   ],
   "end_xy": [
    685688.9196411758,
    4777182.016163589
   ]
  },
  "max_3m": {
   "gradient_pct": 54.69535810967159,
   "start_distance_m": 278.0,
   "end_distance_m": 281.0,
   "midpoint_distance_m": 279.5,
   "start_elevation_m": 442.0088792336367,
   "end_elevation_m": 443.64973997692687,
   "start_xy": [
    685691.3486355687,
    4777180.255690539
   ],
   "end_xy": [
    685688.9196411758,
    4777182.016163589
   ]
  }
 },
 "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": {
  "structure_suppression": {
   "masked_fraction": 0.004,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    0.0,
    3.0
   ]
  ],
  "review": [
   "max5_over_45",
   "max10_over_40"
  ],
  "extent": [],
  "suggested_summit_cut_m": 844.0,
  "trailing_descent_m": 3.5
 },
 "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/vt/USGS_1M_18_x68y478_VT_Statewide_A23.tif"
  ],
  "calculated_at": "2026-09-03T19:46:07+00:00",
  "road_source": "/mnt/HC_Volume_106727764/site-corpus-fresh/us/olde-cheney-road/olde-cheney-road.geojson",
  "run_id": "canopy-all-260903",
  "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, VT_Statewide_A23 (collected 2023)",
  "elevation_tile_ids": [
   "x68y478"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 EPT corridor failed: VT_Statewide_2_A23: no EPT nodes intersect the corridor; VT_Statewide_1_A23: no EPT nodes intersect the corridor",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "Jamaica",
  "county": "Vermont"
 }
}