{
 "ocl_version": "0.1.0",
 "name": "Papoose Hill Road",
 "slug": "papoose-hill-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 22.518209405996004,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 69.0,
   "end_distance_m": 71.0,
   "start_elevation_m": 137.97457155159069,
   "end_elevation_m": 138.4249357397106,
   "min_gradient_pct": 2.876294921264133
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.32981287635596,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 58.0,
   "end_distance_m": 61.0,
   "start_elevation_m": 135.60944662827018,
   "end_elevation_m": 136.27934101456086,
   "min_gradient_pct": 2.947961246138675
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.204488082421676,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 57.0,
   "end_distance_m": 62.0,
   "start_elevation_m": 135.3882324360235,
   "end_elevation_m": 136.49845684014457,
   "min_gradient_pct": 3.425900012221348
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.76005869942628,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 56.0,
   "end_distance_m": 66.0,
   "start_elevation_m": 135.1724619915308,
   "end_elevation_m": 137.34846786147344,
   "min_gradient_pct": 4.705938179835414
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.41555658410425,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 56.0,
   "end_distance_m": 76.0,
   "start_elevation_m": 135.1724619915308,
   "end_elevation_m": 139.45557330835166,
   "min_gradient_pct": 7.858283877820256
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.341352720093823,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 47.0,
   "end_distance_m": 72.0,
   "start_elevation_m": 133.30399546656815,
   "end_elevation_m": 138.6393336465916,
   "min_gradient_pct": 8.122154942824523
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.64947785236575,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 36.0,
   "end_distance_m": 86.0,
   "start_elevation_m": 131.18416625826416,
   "end_elevation_m": 141.50890518444703,
   "min_gradient_pct": 9.52515677154372
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.20678915292487,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 13.0,
   "end_distance_m": 113.0,
   "start_elevation_m": 127.57696580135823,
   "end_elevation_m": 144.7837549542831,
   "min_gradient_pct": 14.99280617599081
  }
 ],
 "shape": {
  "ascent_concentration": 0.377,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 99.0,
  "shape_class": "sustained"
 },
 "length_m": 141.26293340472668,
 "start_elevation_m": 126.86204904830224,
 "end_elevation_m": 147.12452139925517,
 "endpoint_gain_m": 20.262472350952933,
 "overall_gradient_pct": 14.343799794175126,
 "accumulated_ascent_m": 20.262472350952933,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.204488082421676,
   "start_distance_m": 57.0,
   "end_distance_m": 62.0,
   "midpoint_distance_m": 59.5,
   "start_elevation_m": 135.3882324360235,
   "end_elevation_m": 136.49845684014457,
   "start_xy": [
    640675.4363352783,
    4587856.784551938
   ],
   "end_xy": [
    640670.6085465671,
    4587855.483608807
   ]
  },
  "max_10m": {
   "gradient_pct": 21.76005869942628,
   "start_distance_m": 56.0,
   "end_distance_m": 66.0,
   "midpoint_distance_m": 61.0,
   "start_elevation_m": 135.1724619915308,
   "end_elevation_m": 137.34846786147344,
   "start_xy": [
    640676.4016515388,
    4587857.045635287
   ],
   "end_xy": [
    640666.8429253697,
    4587854.150740232
   ]
  },
  "max_20m": {
   "gradient_pct": 21.41555658410425,
   "start_distance_m": 56.0,
   "end_distance_m": 76.0,
   "midpoint_distance_m": 66.0,
   "start_elevation_m": 135.1724619915308,
   "end_elevation_m": 139.45557330835166,
   "start_xy": [
    640676.4016515388,
    4587857.045635287
   ],
   "end_xy": [
    640657.5874086964,
    4587850.364530126
   ]
  },
  "max_25m": {
   "gradient_pct": 21.341352720093823,
   "start_distance_m": 47.0,
   "end_distance_m": 72.0,
   "midpoint_distance_m": 59.5,
   "start_elevation_m": 133.30399546656815,
   "end_elevation_m": 138.6393336465916,
   "start_xy": [
    640685.0915936786,
    4587859.387619638
   ],
   "end_xy": [
    640661.2897540788,
    4587851.878674991
   ]
  },
  "max_50m": {
   "gradient_pct": 20.64947785236575,
   "start_distance_m": 36.0,
   "end_distance_m": 86.0,
   "midpoint_distance_m": 61.0,
   "start_elevation_m": 131.18416625826416,
   "end_elevation_m": 141.50890518444703,
   "start_xy": [
    640695.6963840312,
    4587862.308538055
   ],
   "end_xy": [
    640648.2538004126,
    4587846.776793318
   ]
  },
  "max_100m": {
   "gradient_pct": 17.20678915292487,
   "start_distance_m": 13.0,
   "end_distance_m": 113.0,
   "midpoint_distance_m": 63.0,
   "start_elevation_m": 127.57696580135823,
   "end_elevation_m": 144.7837549542831,
   "start_xy": [
    640717.7727872642,
    4587868.759637951
   ],
   "end_xy": [
    640622.0137610567,
    4587840.673188706
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 3.425900012221348,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 126.86204904830224,
   "end_elevation_m": 127.0333440489133,
   "start_xy": [
    640730.537,
    4587871.152
   ],
   "end_xy": [
    640725.6032054746,
    4587870.341033725
   ]
  },
  "min_10m": {
   "gradient_pct": 4.705938179835414,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 126.86204904830224,
   "end_elevation_m": 127.33264286628578,
   "start_xy": [
    640730.537,
    4587871.152
   ],
   "end_xy": [
    640720.6696001333,
    4587869.528919537
   ]
  },
  "min_20m": {
   "gradient_pct": 7.858283877820256,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 126.86204904830224,
   "end_elevation_m": 128.4337058238663,
   "start_xy": [
    640730.537,
    4587871.152
   ],
   "end_xy": [
    640711.0646005346,
    4587866.759582206
   ]
  },
  "min_25m": {
   "gradient_pct": 8.122154942824523,
   "start_distance_m": 116.0,
   "end_distance_m": 141.0,
   "midpoint_distance_m": 128.5,
   "start_elevation_m": 145.0786182661115,
   "end_elevation_m": 147.10915700181764,
   "start_xy": [
    640619.0489234491,
    4587840.215218992
   ],
   "end_xy": [
    640594.1692042884,
    4587837.893567485
   ]
  },
  "min_50m": {
   "gradient_pct": 9.52515677154372,
   "start_distance_m": 91.0,
   "end_distance_m": 141.0,
   "midpoint_distance_m": 116.0,
   "start_elevation_m": 142.34657861604578,
   "end_elevation_m": 147.10915700181764,
   "start_xy": [
    640643.5217772207,
    4587845.177663313
   ],
   "end_xy": [
    640594.1692042884,
    4587837.893567485
   ]
  },
  "min_100m": {
   "gradient_pct": 14.99280617599081,
   "start_distance_m": 41.0,
   "end_distance_m": 141.0,
   "midpoint_distance_m": 91.0,
   "start_elevation_m": 132.11635082582683,
   "end_elevation_m": 147.10915700181764,
   "start_xy": [
    640690.8850167406,
    4587860.948466203
   ],
   "end_xy": [
    640594.1692042884,
    4587837.893567485
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 22.518209405996004,
   "start_distance_m": 69.0,
   "end_distance_m": 71.0,
   "midpoint_distance_m": 70.0,
   "start_elevation_m": 137.97457155159069,
   "end_elevation_m": 138.4249357397106,
   "start_xy": [
    640664.0664120351,
    4587853.014531491
   ],
   "end_xy": [
    640662.2152385683,
    4587852.257460494
   ]
  },
  "max_3m": {
   "gradient_pct": 22.32981287635596,
   "start_distance_m": 58.0,
   "end_distance_m": 61.0,
   "midpoint_distance_m": 59.5,
   "start_elevation_m": 135.60944662827018,
   "end_elevation_m": 136.27934101456086,
   "start_xy": [
    640674.4707003104,
    4587856.524649825
   ],
   "end_xy": [
    640671.5739307444,
    4587855.744440916
   ]
  }
 },
 "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": 0.818,
   "obstruction_max_height_m": 26.63,
   "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_x64y459_CT_Statewide_C16.tif"
  ],
  "calculated_at": "2026-09-03T19:50:54+00:00",
  "road_source": "/mnt/HC_Volume_106727764/site-corpus-fresh/us/papoose-hill-road/papoose-hill-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": [
   "x64y459"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://usgs-lidar-public.s3-us-west-2.amazonaws.com/USGS_LPC_CT_Sandy_2014_LAS_2015",
   "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"
 }
}