{
 "ocl_version": "0.1.0",
 "name": "Ordway Road",
 "slug": "ordway-road-2",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 27.289917024893384,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 709.0,
   "end_distance_m": 711.0,
   "start_elevation_m": 533.0573907644676,
   "end_elevation_m": 533.6031891049655,
   "min_gradient_pct": -4.982262578343466
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 26.894030005299403,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 709.0,
   "end_distance_m": 712.0,
   "start_elevation_m": 533.0573907644676,
   "end_elevation_m": 533.8642116646266,
   "min_gradient_pct": -4.443859055173031
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.55891501250153,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 708.0,
   "end_distance_m": 713.0,
   "start_elevation_m": 532.8021722169137,
   "end_elevation_m": 534.1301179675388,
   "min_gradient_pct": -4.263437824899938
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.538453794891893,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 707.0,
   "end_distance_m": 717.0,
   "start_elevation_m": 532.5459280307537,
   "end_elevation_m": 535.0997734102428,
   "min_gradient_pct": -3.6789156338920748
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.469238816064944,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 698.0,
   "end_distance_m": 718.0,
   "start_elevation_m": 530.4502177548566,
   "end_elevation_m": 535.3440655180696,
   "min_gradient_pct": -3.2012198744550346
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 24.20732296452252,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 695.0,
   "end_distance_m": 720.0,
   "start_elevation_m": 529.7456334131873,
   "end_elevation_m": 535.7974641543179,
   "min_gradient_pct": -2.9402222054516187
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.887402425432583,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 675.0,
   "end_distance_m": 725.0,
   "start_elevation_m": 526.3646337602697,
   "end_elevation_m": 536.808334972986,
   "min_gradient_pct": -2.186729929547596
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.56661022083324,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 618.0,
   "end_distance_m": 718.0,
   "start_elevation_m": 514.7774552972363,
   "end_elevation_m": 535.3440655180696,
   "min_gradient_pct": -0.8662153228585794
  }
 ],
 "shape": {
  "ascent_concentration": 0.422,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 180.0,
  "shape_class": "sustained"
 },
 "length_m": 729.9992683178848,
 "start_elevation_m": 463.4271879084721,
 "end_elevation_m": 537.5103582764124,
 "endpoint_gain_m": 74.08317036794028,
 "overall_gradient_pct": 10.14838967423185,
 "accumulated_ascent_m": 75.4020205905108,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.55891501250153,
   "start_distance_m": 708.0,
   "end_distance_m": 713.0,
   "midpoint_distance_m": 710.5,
   "start_elevation_m": 532.8021722169137,
   "end_elevation_m": 534.1301179675388,
   "start_xy": [
    679192.5539129279,
    4883624.681085415
   ],
   "end_xy": [
    679190.4756817805,
    4883629.228717249
   ]
  },
  "max_10m": {
   "gradient_pct": 25.538453794891893,
   "start_distance_m": 707.0,
   "end_distance_m": 717.0,
   "midpoint_distance_m": 712.0,
   "start_elevation_m": 532.5459280307537,
   "end_elevation_m": 535.0997734102428,
   "start_xy": [
    679192.9695591574,
    4883623.771559048
   ],
   "end_xy": [
    679188.8130968625,
    4883632.866822716
   ]
  },
  "max_20m": {
   "gradient_pct": 24.469238816064944,
   "start_distance_m": 698.0,
   "end_distance_m": 718.0,
   "midpoint_distance_m": 708.0,
   "start_elevation_m": 530.4502177548566,
   "end_elevation_m": 535.3440655180696,
   "start_xy": [
    679196.2279379375,
    4883615.462777458
   ],
   "end_xy": [
    679188.397450633,
    4883633.776349083
   ]
  },
  "max_25m": {
   "gradient_pct": 24.20732296452252,
   "start_distance_m": 695.0,
   "end_distance_m": 720.0,
   "midpoint_distance_m": 707.5,
   "start_elevation_m": 529.7456334131873,
   "end_elevation_m": 535.7974641543179,
   "start_xy": [
    679196.4401408954,
    4883612.470291885
   ],
   "end_xy": [
    679187.566158174,
    4883635.595401817
   ]
  },
  "max_50m": {
   "gradient_pct": 20.887402425432583,
   "start_distance_m": 675.0,
   "end_distance_m": 725.0,
   "midpoint_distance_m": 700.0,
   "start_elevation_m": 526.3646337602697,
   "end_elevation_m": 536.808334972986,
   "start_xy": [
    679197.8548272824,
    4883592.520388065
   ],
   "end_xy": [
    679185.4879270266,
    4883640.143033651
   ]
  },
  "max_100m": {
   "gradient_pct": 20.56661022083324,
   "start_distance_m": 618.0,
   "end_distance_m": 718.0,
   "midpoint_distance_m": 668.0,
   "start_elevation_m": 514.7774552972363,
   "end_elevation_m": 535.3440655180696,
   "start_xy": [
    679203.0387672902,
    4883536.441601126
   ],
   "end_xy": [
    679188.397450633,
    4883633.776349083
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -4.263437824899938,
   "start_distance_m": 68.0,
   "end_distance_m": 73.0,
   "midpoint_distance_m": 70.5,
   "start_elevation_m": 464.6514386716904,
   "end_elevation_m": 464.4382667804454,
   "start_xy": [
    679681.4518699083,
    4883333.945901719
   ],
   "end_xy": [
    679676.6885033993,
    4883335.465881817
   ]
  },
  "min_10m": {
   "gradient_pct": -3.6789156338920748,
   "start_distance_m": 67.0,
   "end_distance_m": 77.0,
   "midpoint_distance_m": 72.0,
   "start_elevation_m": 464.68561323006014,
   "end_elevation_m": 464.31772166667093,
   "start_xy": [
    679682.40454321,
    4883333.641905699
   ],
   "end_xy": [
    679672.877810192,
    4883336.681865896
   ]
  },
  "min_20m": {
   "gradient_pct": -3.2012198744550346,
   "start_distance_m": 65.0,
   "end_distance_m": 85.0,
   "midpoint_distance_m": 75.0,
   "start_elevation_m": 464.749103835954,
   "end_elevation_m": 464.10885986106297,
   "start_xy": [
    679684.3098898138,
    4883333.033913659
   ],
   "end_xy": [
    679665.2564237774,
    4883339.113834054
   ]
  },
  "min_25m": {
   "gradient_pct": -2.9402222054516187,
   "start_distance_m": 60.0,
   "end_distance_m": 85.0,
   "midpoint_distance_m": 72.5,
   "start_elevation_m": 464.8439154124259,
   "end_elevation_m": 464.10885986106297,
   "start_xy": [
    679689.0732563228,
    4883331.513933561
   ],
   "end_xy": [
    679665.2564237774,
    4883339.113834054
   ]
  },
  "min_50m": {
   "gradient_pct": -2.186729929547596,
   "start_distance_m": 36.0,
   "end_distance_m": 86.0,
   "midpoint_distance_m": 61.0,
   "start_elevation_m": 465.19001387598445,
   "end_elevation_m": 464.09664891121065,
   "start_xy": [
    679711.4702254102,
    4883322.890378796
   ],
   "end_xy": [
    679664.3037504756,
    4883339.417830073
   ]
  },
  "min_100m": {
   "gradient_pct": -0.8662153228585794,
   "start_distance_m": 34.0,
   "end_distance_m": 134.0,
   "midpoint_distance_m": 84.0,
   "start_elevation_m": 465.1918301518881,
   "end_elevation_m": 464.3256148290295,
   "start_xy": [
    679713.3364414126,
    4883322.171186309
   ],
   "end_xy": [
    679618.5696765218,
    4883353.98758322
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 27.289917024893384,
   "start_distance_m": 709.0,
   "end_distance_m": 711.0,
   "midpoint_distance_m": 710.0,
   "start_elevation_m": 533.0573907644676,
   "end_elevation_m": 533.6031891049655,
   "start_xy": [
    679192.1382666983,
    4883625.590611782
   ],
   "end_xy": [
    679191.3069742394,
    4883627.409664515
   ]
  },
  "max_3m": {
   "gradient_pct": 26.894030005299403,
   "start_distance_m": 709.0,
   "end_distance_m": 712.0,
   "midpoint_distance_m": 710.5,
   "start_elevation_m": 533.0573907644676,
   "end_elevation_m": 533.8642116646266,
   "start_xy": [
    679192.1382666983,
    4883625.590611782
   ],
   "end_xy": [
    679190.8913280099,
    4883628.319190882
   ]
  }
 },
 "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": {
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.254,
   "obstruction_max_height_m": 24.64,
   "flagged_windows_m": [
    20,
    25,
    50,
    100
   ]
  },
  "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/vt/USGS_1M_18_x67y489_VT_Statewide_A23.tif"
  ],
  "calculated_at": "2026-09-04T21:38:26+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/vermont-260821.osm.pbf",
  "osm_snapshot": "2026-08-21T20:21:11Z",
  "run_id": "hunt-wave1-260905",
  "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": [
   "x67y489"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://s3-us-west-2.amazonaws.com/usgs-lidar-public/VT_Statewide_2_A23",
   "ept_crs": "EPSG:3857",
   "station_coverage": 1.0,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "Roxbury",
  "county": "Vermont"
 }
}