{
 "ocl_version": "0.1.0",
 "name": "Oxbow Road",
 "slug": "oxbow-road-2",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 59.422171627348064,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 396.0,
   "end_distance_m": 398.0,
   "start_elevation_m": 216.28968745316638,
   "end_elevation_m": 217.47813088571334,
   "min_gradient_pct": -23.8916603778776
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 52.4282162101836,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 395.0,
   "end_distance_m": 398.0,
   "start_elevation_m": 215.90528439940783,
   "end_elevation_m": 217.47813088571334,
   "min_gradient_pct": -17.62803766788939
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 43.85608937230927,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 394.0,
   "end_distance_m": 399.0,
   "start_elevation_m": 215.6447377582203,
   "end_elevation_m": 217.83754222683575,
   "min_gradient_pct": -9.425872361729262
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 30.657412297007625,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 390.0,
   "end_distance_m": 400.0,
   "start_elevation_m": 214.9770181695149,
   "end_elevation_m": 218.04275939921567,
   "min_gradient_pct": 0.3147760829716617
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.07787110841383,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 381.0,
   "end_distance_m": 401.0,
   "start_elevation_m": 213.3405059156638,
   "end_elevation_m": 218.15608013734658,
   "min_gradient_pct": 1.6185562976968981
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.868421295715166,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 373.0,
   "end_distance_m": 398.0,
   "start_elevation_m": 212.01102556178455,
   "end_elevation_m": 217.47813088571334,
   "min_gradient_pct": 1.6389785448118346
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.906349840770076,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 350.0,
   "end_distance_m": 400.0,
   "start_elevation_m": 208.08958447883063,
   "end_elevation_m": 218.04275939921567,
   "min_gradient_pct": 2.140373290876198
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.824138295956374,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 300.0,
   "end_distance_m": 400.0,
   "start_elevation_m": 200.2186211032593,
   "end_elevation_m": 218.04275939921567,
   "min_gradient_pct": 4.493951955966622
  }
 ],
 "shape": {
  "ascent_concentration": 0.398,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 201.0,
  "shape_class": "sustained"
 },
 "length_m": 546.9999999999496,
 "start_elevation_m": 168.09758246337947,
 "end_elevation_m": 229.69051752176767,
 "endpoint_gain_m": 61.59293505838821,
 "overall_gradient_pct": 11.260134379962318,
 "accumulated_ascent_m": 62.2091912366069,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 43.85608937230927,
   "start_distance_m": 394.0,
   "end_distance_m": 399.0,
   "midpoint_distance_m": 396.5,
   "start_elevation_m": 215.6447377582203,
   "end_elevation_m": 217.83754222683575,
   "start_xy": [
    693620.2940186827,
    4860351.109115947
   ],
   "end_xy": [
    693619.3844292973,
    4860346.192547311
   ]
  },
  "max_10m": {
   "gradient_pct": 30.657412297007625,
   "start_distance_m": 390.0,
   "end_distance_m": 400.0,
   "midpoint_distance_m": 395.0,
   "start_elevation_m": 214.9770181695149,
   "end_elevation_m": 218.04275939921567,
   "start_xy": [
    693621.021690191,
    4860355.042370856
   ],
   "end_xy": [
    693619.2025114201,
    4860345.209233584
   ]
  },
  "max_20m": {
   "gradient_pct": 24.07787110841383,
   "start_distance_m": 381.0,
   "end_distance_m": 401.0,
   "midpoint_distance_m": 391.0,
   "start_elevation_m": 213.3405059156638,
   "end_elevation_m": 218.15608013734658,
   "start_xy": [
    693622.6589510847,
    4860363.892194401
   ],
   "end_xy": [
    693619.0205935431,
    4860344.225919857
   ]
  },
  "max_25m": {
   "gradient_pct": 21.868421295715166,
   "start_distance_m": 373.0,
   "end_distance_m": 398.0,
   "midpoint_distance_m": 385.5,
   "start_elevation_m": 212.01102556178455,
   "end_elevation_m": 217.47813088571334,
   "start_xy": [
    693624.1142941013,
    4860371.758704217
   ],
   "end_xy": [
    693619.5663471743,
    4860347.175861038
   ]
  },
  "max_50m": {
   "gradient_pct": 19.906349840770076,
   "start_distance_m": 350.0,
   "end_distance_m": 400.0,
   "midpoint_distance_m": 375.0,
   "start_elevation_m": 208.08958447883063,
   "end_elevation_m": 218.04275939921567,
   "start_xy": [
    693627.4591786724,
    4860394.486201372
   ],
   "end_xy": [
    693619.2025114201,
    4860345.209233584
   ]
  },
  "max_100m": {
   "gradient_pct": 17.824138295956374,
   "start_distance_m": 300.0,
   "end_distance_m": 400.0,
   "midpoint_distance_m": 350.0,
   "start_elevation_m": 200.2186211032593,
   "end_elevation_m": 218.04275939921567,
   "start_xy": [
    693636.813431608,
    4860441.345143481
   ],
   "end_xy": [
    693619.2025114201,
    4860345.209233584
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -9.425872361729262,
   "start_distance_m": 404.0,
   "end_distance_m": 409.0,
   "midpoint_distance_m": 406.5,
   "start_elevation_m": 218.5116517800723,
   "end_elevation_m": 218.04035816198584,
   "start_xy": [
    693618.4748399119,
    4860341.275978676
   ],
   "end_xy": [
    693617.5652505265,
    4860336.35941004
   ]
  },
  "min_10m": {
   "gradient_pct": 0.3147760829716617,
   "start_distance_m": 404.0,
   "end_distance_m": 414.0,
   "midpoint_distance_m": 409.0,
   "start_elevation_m": 218.5116517800723,
   "end_elevation_m": 218.54312938836947,
   "start_xy": [
    693618.4748399119,
    4860341.275978676
   ],
   "end_xy": [
    693616.655661141,
    4860331.442841404
   ]
  },
  "min_20m": {
   "gradient_pct": 1.6185562976968981,
   "start_distance_m": 5.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 15.0,
   "start_elevation_m": 168.1843707542677,
   "end_elevation_m": 168.50808201380707,
   "start_xy": [
    693890.4339857595,
    4860335.530900466
   ],
   "end_xy": [
    693870.5379287973,
    4860333.494502333
   ]
  },
  "min_25m": {
   "gradient_pct": 1.6389785448118346,
   "start_distance_m": 3.0,
   "end_distance_m": 28.0,
   "midpoint_distance_m": 15.5,
   "start_elevation_m": 168.15378507816143,
   "end_elevation_m": 168.5635297143644,
   "start_xy": [
    693892.4235914557,
    4860335.73454028
   ],
   "end_xy": [
    693867.553520253,
    4860333.189042614
   ]
  },
  "min_50m": {
   "gradient_pct": 2.140373290876198,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 168.09758246337947,
   "end_elevation_m": 169.16776910881757,
   "start_xy": [
    693895.408,
    4860336.04
   ],
   "end_xy": [
    693845.745310547,
    4860330.3338940395
   ]
  },
  "min_100m": {
   "gradient_pct": 4.493951955966622,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 168.09758246337947,
   "end_elevation_m": 172.5915344193461,
   "start_xy": [
    693895.408,
    4860336.04
   ],
   "end_xy": [
    693795.8342352189,
    4860329.344949548
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 59.422171627348064,
   "start_distance_m": 396.0,
   "end_distance_m": 398.0,
   "midpoint_distance_m": 397.0,
   "start_elevation_m": 216.28968745316638,
   "end_elevation_m": 217.47813088571334,
   "start_xy": [
    693619.9301829285,
    4860349.142488493
   ],
   "end_xy": [
    693619.5663471743,
    4860347.175861038
   ]
  },
  "max_3m": {
   "gradient_pct": 52.4282162101836,
   "start_distance_m": 395.0,
   "end_distance_m": 398.0,
   "midpoint_distance_m": 396.5,
   "start_elevation_m": 215.90528439940783,
   "end_elevation_m": 217.47813088571334,
   "start_xy": [
    693620.1121008056,
    4860350.12580222
   ],
   "end_xy": [
    693619.5663471743,
    4860347.175861038
   ]
  }
 },
 "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": 0.562,
   "obstruction_max_height_m": 29.32,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [
   "short_window_divergence"
  ],
  "extent": []
 },
 "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_x69y487_VT_Statewide_A23.tif"
  ],
  "calculated_at": "2026-09-04T21:25:47+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": [
   "x69y487"
  ],
  "route_summit_trim_m": 316.4,
  "route_summit_trim_loss_m": 4.8,
  "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": 0.998,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "Bethel",
  "county": "Vermont"
 }
}