{
 "ocl_version": "0.1.0",
 "name": "Overlook Knoll Road",
 "slug": "overlook-knoll-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 23.276254495476678,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 339.0,
   "end_distance_m": 341.0,
   "start_elevation_m": 65.62520737968086,
   "end_elevation_m": 66.09073246959039,
   "min_gradient_pct": 0.6304209068030531
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 23.086314663348162,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 339.0,
   "end_distance_m": 342.0,
   "start_elevation_m": 65.62520737968086,
   "end_elevation_m": 66.3177968195813,
   "min_gradient_pct": 0.9092632836865752
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.818129624571384,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 337.0,
   "end_distance_m": 342.0,
   "start_elevation_m": 65.17689033835273,
   "end_elevation_m": 66.3177968195813,
   "min_gradient_pct": 0.9998581197554302
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.42865298361025,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 332.0,
   "end_distance_m": 342.0,
   "start_elevation_m": 64.07493152122028,
   "end_elevation_m": 66.3177968195813,
   "min_gradient_pct": 1.1447423622339414
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.53782190672583,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 330.0,
   "end_distance_m": 350.0,
   "start_elevation_m": 63.64806311435631,
   "end_elevation_m": 67.95562749570148,
   "min_gradient_pct": 1.3332665642317565
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.198375928012382,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 329.0,
   "end_distance_m": 354.0,
   "start_elevation_m": 63.4414544188835,
   "end_elevation_m": 68.7410484008866,
   "min_gradient_pct": 1.4258146876866817
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.21388618151164,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 316.0,
   "end_distance_m": 366.0,
   "start_elevation_m": 61.35554587933126,
   "end_elevation_m": 70.96248897008708,
   "min_gradient_pct": 1.674188660684905
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 14.67245777693364,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 266.0,
   "end_distance_m": 366.0,
   "start_elevation_m": 56.29003119315344,
   "end_elevation_m": 70.96248897008708,
   "min_gradient_pct": 2.490074968230452
  }
 ],
 "shape": {
  "ascent_concentration": 0.355,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 105.0,
  "shape_class": "sustained"
 },
 "length_m": 366.1818222326451,
 "start_elevation_m": 32.48859971617702,
 "end_elevation_m": 70.99823610216788,
 "endpoint_gain_m": 38.50963638599086,
 "overall_gradient_pct": 10.51653414994605,
 "accumulated_ascent_m": 38.50963638599086,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.818129624571384,
   "start_distance_m": 337.0,
   "end_distance_m": 342.0,
   "midpoint_distance_m": 339.5,
   "start_elevation_m": 65.17689033835273,
   "end_elevation_m": 66.3177968195813,
   "start_xy": [
    643736.072451198,
    4590046.407213008
   ],
   "end_xy": [
    643731.3336546257,
    4590044.812281461
   ]
  },
  "max_10m": {
   "gradient_pct": 22.42865298361025,
   "start_distance_m": 332.0,
   "end_distance_m": 342.0,
   "midpoint_distance_m": 337.0,
   "start_elevation_m": 64.07493152122028,
   "end_elevation_m": 66.3177968195813,
   "start_xy": [
    643740.8115499022,
    4590048.001246222
   ],
   "end_xy": [
    643731.3336546257,
    4590044.812281461
   ]
  },
  "max_20m": {
   "gradient_pct": 21.53782190672583,
   "start_distance_m": 330.0,
   "end_distance_m": 350.0,
   "midpoint_distance_m": 340.0,
   "start_elevation_m": 63.64806311435631,
   "end_elevation_m": 67.95562749570148,
   "start_xy": [
    643742.707109236,
    4590048.639097939
   ],
   "end_xy": [
    643723.7999380111,
    4590042.127519983
   ]
  },
  "max_25m": {
   "gradient_pct": 21.198375928012382,
   "start_distance_m": 329.0,
   "end_distance_m": 354.0,
   "midpoint_distance_m": 341.5,
   "start_elevation_m": 63.4414544188835,
   "end_elevation_m": 68.7410484008866,
   "start_xy": [
    643743.6547962966,
    4590048.958298858
   ],
   "end_xy": [
    643720.0826618109,
    4590040.650409979
   ]
  },
  "max_50m": {
   "gradient_pct": 19.21388618151164,
   "start_distance_m": 316.0,
   "end_distance_m": 366.0,
   "midpoint_distance_m": 341.0,
   "start_elevation_m": 61.35554587933126,
   "end_elevation_m": 70.96248897008708,
   "start_xy": [
    643755.975617524,
    4590053.105268977
   ],
   "end_xy": [
    643709.9542230094,
    4590034.386405676
   ]
  },
  "max_100m": {
   "gradient_pct": 14.67245777693364,
   "start_distance_m": 266.0,
   "end_distance_m": 366.0,
   "midpoint_distance_m": 316.0,
   "start_elevation_m": 56.29003119315344,
   "end_elevation_m": 70.96248897008708,
   "start_xy": [
    643803.3630770256,
    4590069.0560871
   ],
   "end_xy": [
    643709.9542230094,
    4590034.386405676
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.9998581197554302,
   "start_distance_m": 109.0,
   "end_distance_m": 114.0,
   "midpoint_distance_m": 111.5,
   "start_elevation_m": 42.361117214606026,
   "end_elevation_m": 42.4111101205938,
   "start_xy": [
    643952.1566654287,
    4590118.57304423
   ],
   "end_xy": [
    643947.4574369679,
    4590116.865048942
   ]
  },
  "min_10m": {
   "gradient_pct": 1.1447423622339414,
   "start_distance_m": 104.0,
   "end_distance_m": 114.0,
   "midpoint_distance_m": 109.0,
   "start_elevation_m": 42.2966358843704,
   "end_elevation_m": 42.4111101205938,
   "start_xy": [
    643956.8559823568,
    4590120.280795708
   ],
   "end_xy": [
    643947.4574369679,
    4590116.865048942
   ]
  },
  "min_20m": {
   "gradient_pct": 1.3332665642317565,
   "start_distance_m": 100.0,
   "end_distance_m": 120.0,
   "midpoint_distance_m": 110.0,
   "start_elevation_m": 42.23517069477023,
   "end_elevation_m": 42.501824007616584,
   "start_xy": [
    643960.6154472997,
    4590121.6469648685
   ],
   "end_xy": [
    643941.8181806875,
    4590114.815955972
   ]
  },
  "min_25m": {
   "gradient_pct": 1.4258146876866817,
   "start_distance_m": 98.0,
   "end_distance_m": 123.0,
   "midpoint_distance_m": 110.5,
   "start_elevation_m": 42.201666472142946,
   "end_elevation_m": 42.55812014406462,
   "start_xy": [
    643962.4952382476,
    4590122.3298888095
   ],
   "end_xy": [
    643938.9983620954,
    4590113.791933868
   ]
  },
  "min_50m": {
   "gradient_pct": 1.674188660684905,
   "start_distance_m": 98.0,
   "end_distance_m": 148.0,
   "midpoint_distance_m": 123.0,
   "start_elevation_m": 42.201666472142946,
   "end_elevation_m": 43.0387608024854,
   "start_xy": [
    643962.4952382476,
    4590122.3298888095
   ],
   "end_xy": [
    643915.501485943,
    4590105.253978929
   ]
  },
  "min_100m": {
   "gradient_pct": 2.490074968230452,
   "start_distance_m": 75.0,
   "end_distance_m": 175.0,
   "midpoint_distance_m": 125.0,
   "start_elevation_m": 41.1898915428557,
   "end_elevation_m": 43.67996651108615,
   "start_xy": [
    643965.803589533,
    4590138.484835788
   ],
   "end_xy": [
    643889.8363125209,
    4590097.000406825
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 23.276254495476678,
   "start_distance_m": 339.0,
   "end_distance_m": 341.0,
   "midpoint_distance_m": 340.0,
   "start_elevation_m": 65.62520737968086,
   "end_elevation_m": 66.09073246959039,
   "start_xy": [
    643734.1769010086,
    4590045.769334131
   ],
   "end_xy": [
    643732.2814342924,
    4590045.13120732
   ]
  },
  "max_3m": {
   "gradient_pct": 23.086314663348162,
   "start_distance_m": 339.0,
   "end_distance_m": 342.0,
   "midpoint_distance_m": 340.5,
   "start_elevation_m": 65.62520737968086,
   "end_elevation_m": 66.3177968195813,
   "start_xy": [
    643734.1769010086,
    4590045.769334131
   ],
   "end_xy": [
    643731.3336546257,
    4590044.812281461
   ]
  }
 },
 "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": 0.413,
   "obstruction_max_height_m": 26.27,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "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/ct/USGS_1M_18_x64y460_CT_Statewide_C16.tif"
  ],
  "calculated_at": "2026-09-03T19:47:35+00:00",
  "road_source": "/mnt/HC_Volume_106727764/site-corpus-fresh/us/overlook-knoll-road/overlook-knoll-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, CT_Statewide_C16 (collected 2016)",
  "elevation_tile_ids": [
   "x64y460"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://usgs-lidar-public.s3-us-west-2.amazonaws.com/CT_Statewide_B3_2016",
   "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": "Newtown",
  "county": "Connecticut"
 }
}