{
 "ocl_version": "0.1.0",
 "name": "Mundel Road",
 "slug": "mundel-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 24.102986562527917,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 536.0,
   "end_distance_m": 538.0,
   "start_elevation_m": 414.0624784852838,
   "end_elevation_m": 414.54453821653436,
   "min_gradient_pct": -10.972909897444083
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 23.996129988764398,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 536.0,
   "end_distance_m": 539.0,
   "start_elevation_m": 414.0624784852838,
   "end_elevation_m": 414.78236238494674,
   "min_gradient_pct": -10.21808720246895
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.87621475788137,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 537.0,
   "end_distance_m": 542.0,
   "start_elevation_m": 414.3012752602115,
   "end_elevation_m": 415.4950859981056,
   "min_gradient_pct": -10.036961315413464
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.68287629787062,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 537.0,
   "end_distance_m": 547.0,
   "start_elevation_m": 414.3012752602115,
   "end_elevation_m": 416.6695628899986,
   "min_gradient_pct": -9.373675472173773
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.367916323593363,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 533.0,
   "end_distance_m": 553.0,
   "start_elevation_m": 413.3714189509677,
   "end_elevation_m": 418.0450022156864,
   "min_gradient_pct": -8.758840354962842
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.15266162949183,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 532.0,
   "end_distance_m": 557.0,
   "start_elevation_m": 413.14341250695304,
   "end_elevation_m": 418.931577914326,
   "min_gradient_pct": -8.504707013988309
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 22.25047089752752,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 514.0,
   "end_distance_m": 564.0,
   "start_elevation_m": 409.2946031402168,
   "end_elevation_m": 420.41983858898055,
   "min_gradient_pct": -7.588531726375436
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.813643718375374,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 496.0,
   "end_distance_m": 596.0,
   "start_elevation_m": 405.76428547369227,
   "end_elevation_m": 426.57792919206764,
   "min_gradient_pct": -4.785347754176371
  }
 ],
 "shape": {
  "ascent_concentration": 0.412,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 285.0,
  "shape_class": "sustained"
 },
 "length_m": 1267.4007452953995,
 "start_elevation_m": 349.8311772048895,
 "end_elevation_m": 465.5166531399547,
 "endpoint_gain_m": 115.6854759350652,
 "overall_gradient_pct": 9.127774018162015,
 "accumulated_ascent_m": 123.13086926961768,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.87621475788137,
   "start_distance_m": 537.0,
   "end_distance_m": 542.0,
   "midpoint_distance_m": 539.5,
   "start_elevation_m": 414.3012752602115,
   "end_elevation_m": 415.4950859981056,
   "start_xy": [
    709226.1666351233,
    4864486.890333548
   ],
   "end_xy": [
    709223.6067591757,
    4864491.181369068
   ]
  },
  "max_10m": {
   "gradient_pct": 23.68287629787062,
   "start_distance_m": 537.0,
   "end_distance_m": 547.0,
   "midpoint_distance_m": 542.0,
   "start_elevation_m": 414.3012752602115,
   "end_elevation_m": 416.6695628899986,
   "start_xy": [
    709226.1666351233,
    4864486.890333548
   ],
   "end_xy": [
    709221.2947294813,
    4864495.614710775
   ]
  },
  "max_20m": {
   "gradient_pct": 23.367916323593363,
   "start_distance_m": 533.0,
   "end_distance_m": 553.0,
   "midpoint_distance_m": 543.0,
   "start_elevation_m": 413.3714189509677,
   "end_elevation_m": 418.0450022156864,
   "start_xy": [
    709228.2971912507,
    4864483.504963467
   ],
   "end_xy": [
    709218.5202938481,
    4864500.9347208245
   ]
  },
  "max_25m": {
   "gradient_pct": 23.15266162949183,
   "start_distance_m": 532.0,
   "end_distance_m": 557.0,
   "midpoint_distance_m": 544.5,
   "start_elevation_m": 413.14341250695304,
   "end_elevation_m": 418.931577914326,
   "start_xy": [
    709228.8298302826,
    4864482.658620946
   ],
   "end_xy": [
    709216.6706700927,
    4864504.48139419
   ]
  },
  "max_50m": {
   "gradient_pct": 22.25047089752752,
   "start_distance_m": 514.0,
   "end_distance_m": 564.0,
   "midpoint_distance_m": 539.0,
   "start_elevation_m": 409.2946031402168,
   "end_elevation_m": 420.41983858898055,
   "start_xy": [
    709238.6862050489,
    4864467.606765884
   ],
   "end_xy": [
    709213.5281056915,
    4864510.732402723
   ]
  },
  "max_100m": {
   "gradient_pct": 20.813643718375374,
   "start_distance_m": 496.0,
   "end_distance_m": 596.0,
   "midpoint_distance_m": 546.0,
   "start_elevation_m": 405.76428547369227,
   "end_elevation_m": 426.57792919206764,
   "start_xy": [
    709249.3955508798,
    4864453.146055051
   ],
   "end_xy": [
    709201.1150636146,
    4864540.226747713
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -10.036961315413464,
   "start_distance_m": 1227.0,
   "end_distance_m": 1232.0,
   "midpoint_distance_m": 1229.5,
   "start_elevation_m": 467.64181438208675,
   "end_elevation_m": 467.1399663163161,
   "start_xy": [
    708702.2710203886,
    4864446.642022016
   ],
   "end_xy": [
    708697.3457838326,
    4864445.780601756
   ]
  },
  "min_10m": {
   "gradient_pct": -9.373675472173773,
   "start_distance_m": 1225.0,
   "end_distance_m": 1235.0,
   "midpoint_distance_m": 1230.0,
   "start_elevation_m": 467.82375883317036,
   "end_elevation_m": 466.886391285953,
   "start_xy": [
    708704.241115011,
    4864446.986590121
   ],
   "end_xy": [
    708694.390641899,
    4864445.2637495985
   ]
  },
  "min_20m": {
   "gradient_pct": -8.758840354962842,
   "start_distance_m": 1215.0,
   "end_distance_m": 1235.0,
   "midpoint_distance_m": 1225.0,
   "start_elevation_m": 468.63815935694555,
   "end_elevation_m": 466.886391285953,
   "start_xy": [
    708714.0915881231,
    4864448.709430644
   ],
   "end_xy": [
    708694.390641899,
    4864445.2637495985
   ]
  },
  "min_25m": {
   "gradient_pct": -8.504707013988309,
   "start_distance_m": 1209.0,
   "end_distance_m": 1234.0,
   "midpoint_distance_m": 1221.5,
   "start_elevation_m": 469.08842946406435,
   "end_elevation_m": 466.96225271056727,
   "start_xy": [
    708720.0018719904,
    4864449.743134958
   ],
   "end_xy": [
    708695.3756892101,
    4864445.43603365
   ]
  },
  "min_50m": {
   "gradient_pct": -7.588531726375436,
   "start_distance_m": 1196.0,
   "end_distance_m": 1246.0,
   "midpoint_distance_m": 1221.0,
   "start_elevation_m": 469.89350127780557,
   "end_elevation_m": 466.09923541461785,
   "start_xy": [
    708732.8074870362,
    4864451.982827638
   ],
   "end_xy": [
    708683.5551214756,
    4864443.368625023
   ]
  },
  "min_100m": {
   "gradient_pct": -4.785347754176371,
   "start_distance_m": 1166.0,
   "end_distance_m": 1266.0,
   "midpoint_distance_m": 1216.0,
   "start_elevation_m": 470.2977502539762,
   "end_elevation_m": 465.5124024997998,
   "start_xy": [
    708762.2508816682,
    4864457.710881233
   ],
   "end_xy": [
    708664.6134947523,
    4864437.32979023
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 24.102986562527917,
   "start_distance_m": 536.0,
   "end_distance_m": 538.0,
   "midpoint_distance_m": 537.0,
   "start_elevation_m": 414.0624784852838,
   "end_elevation_m": 414.54453821653436,
   "start_xy": [
    709226.6992741551,
    4864486.043991028
   ],
   "end_xy": [
    709225.6339960914,
    4864487.736676069
   ]
  },
  "max_3m": {
   "gradient_pct": 23.996129988764398,
   "start_distance_m": 536.0,
   "end_distance_m": 539.0,
   "midpoint_distance_m": 537.5,
   "start_elevation_m": 414.0624784852838,
   "end_elevation_m": 414.78236238494674,
   "start_xy": [
    709226.6992741551,
    4864486.043991028
   ],
   "end_xy": [
    709225.1013570596,
    4864488.583018589
   ]
  }
 },
 "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": 0.508,
   "obstruction_max_height_m": 28.41,
   "flagged_windows_m": [
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "descends_at_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_x70y487_VT_Statewide_A23.tif"
  ],
  "calculated_at": "2026-09-04T21:24:26+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": [
   "x70y487"
  ],
  "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"
 },
 "area": {
  "place": "Strafford",
  "county": "Vermont"
 }
}