{
 "ocl_version": "0.1.0",
 "name": "Old Stage Road",
 "slug": "old-stage-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 35.2065986387629,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1744.0,
   "end_distance_m": 1746.0,
   "start_elevation_m": 287.05616056517914,
   "end_elevation_m": 287.7602925379544,
   "min_gradient_pct": -17.95847951733407
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 33.115984527025454,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1732.0,
   "end_distance_m": 1735.0,
   "start_elevation_m": 284.3191832431336,
   "end_elevation_m": 285.31266277894434,
   "min_gradient_pct": -16.95090280349329
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 29.673469138887185,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1731.0,
   "end_distance_m": 1736.0,
   "start_elevation_m": 284.08754635998275,
   "end_elevation_m": 285.5712198169271,
   "min_gradient_pct": -15.117392499741982
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 28.310325860218768,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1726.0,
   "end_distance_m": 1736.0,
   "start_elevation_m": 282.74018723090524,
   "end_elevation_m": 285.5712198169271,
   "min_gradient_pct": -14.309702980570194
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 25.10052653524582,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1726.0,
   "end_distance_m": 1746.0,
   "start_elevation_m": 282.74018723090524,
   "end_elevation_m": 287.7602925379544,
   "min_gradient_pct": -13.159633404057445
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.01448883891203,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1721.0,
   "end_distance_m": 1746.0,
   "start_elevation_m": 282.0066703282264,
   "end_elevation_m": 287.7602925379544,
   "min_gradient_pct": -12.776370717442205
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.6815982312977,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 2143.0,
   "end_distance_m": 2193.0,
   "start_elevation_m": 322.30328385598807,
   "end_elevation_m": 332.1440829716369,
   "min_gradient_pct": -10.591252755196194
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.853445528255747,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 2093.0,
   "end_distance_m": 2193.0,
   "start_elevation_m": 313.2906374433812,
   "end_elevation_m": 332.1440829716369,
   "min_gradient_pct": -8.073245351891217
  }
 ],
 "shape": {
  "ascent_concentration": 0.412,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 188.0,
  "shape_class": "sustained"
 },
 "length_m": 2456.480800189422,
 "start_elevation_m": 216.0413270311264,
 "end_elevation_m": 360.50613974744374,
 "endpoint_gain_m": 144.46481271631734,
 "overall_gradient_pct": 5.880966490972675,
 "accumulated_ascent_m": 173.22292080262395,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 29.673469138887185,
   "start_distance_m": 1731.0,
   "end_distance_m": 1736.0,
   "midpoint_distance_m": 1733.5,
   "start_elevation_m": 284.08754635998275,
   "end_elevation_m": 285.5712198169271,
   "start_xy": [
    282802.20024864556,
    4833276.044326592
   ],
   "end_xy": [
    282803.94720539055,
    4833280.7292104615
   ]
  },
  "max_10m": {
   "gradient_pct": 28.310325860218768,
   "start_distance_m": 1726.0,
   "end_distance_m": 1736.0,
   "midpoint_distance_m": 1731.0,
   "start_elevation_m": 282.74018723090524,
   "end_elevation_m": 285.5712198169271,
   "start_xy": [
    282800.4529682083,
    4833271.359563461
   ],
   "end_xy": [
    282803.94720539055,
    4833280.7292104615
   ]
  },
  "max_20m": {
   "gradient_pct": 25.10052653524582,
   "start_distance_m": 1726.0,
   "end_distance_m": 1746.0,
   "midpoint_distance_m": 1736.0,
   "start_elevation_m": 282.74018723090524,
   "end_elevation_m": 287.7602925379544,
   "start_xy": [
    282800.4529682083,
    4833271.359563461
   ],
   "end_xy": [
    282807.44232396554,
    4833290.098528813
   ]
  },
  "max_25m": {
   "gradient_pct": 23.01448883891203,
   "start_distance_m": 1721.0,
   "end_distance_m": 1746.0,
   "midpoint_distance_m": 1733.5,
   "start_elevation_m": 282.0066703282264,
   "end_elevation_m": 287.7602925379544,
   "start_xy": [
    282799.1689212724,
    4833266.570346962
   ],
   "end_xy": [
    282807.44232396554,
    4833290.098528813
   ]
  },
  "max_50m": {
   "gradient_pct": 19.6815982312977,
   "start_distance_m": 2143.0,
   "end_distance_m": 2193.0,
   "midpoint_distance_m": 2168.0,
   "start_elevation_m": 322.30328385598807,
   "end_elevation_m": 332.1440829716369,
   "start_xy": [
    282853.5701777326,
    4833683.170630316
   ],
   "end_xy": [
    282859.5220142833,
    4833732.79126644
   ]
  },
  "max_100m": {
   "gradient_pct": 18.853445528255747,
   "start_distance_m": 2093.0,
   "end_distance_m": 2193.0,
   "midpoint_distance_m": 2143.0,
   "start_elevation_m": 313.2906374433812,
   "end_elevation_m": 332.1440829716369,
   "start_xy": [
    282847.42702472315,
    4833633.55414027
   ],
   "end_xy": [
    282859.5220142833,
    4833732.79126644
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -15.117392499741982,
   "start_distance_m": 1345.0,
   "end_distance_m": 1350.0,
   "midpoint_distance_m": 1347.5,
   "start_elevation_m": 255.72759211196637,
   "end_elevation_m": 254.97172248697927,
   "start_xy": [
    282816.7900661156,
    4832949.605507001
   ],
   "end_xy": [
    282821.3590461339,
    4832951.635320783
   ]
  },
  "min_10m": {
   "gradient_pct": -14.309702980570194,
   "start_distance_m": 1343.0,
   "end_distance_m": 1353.0,
   "midpoint_distance_m": 1348.0,
   "start_elevation_m": 256.0121892889825,
   "end_elevation_m": 254.58121899092546,
   "start_xy": [
    282814.9695321423,
    4832948.777463564
   ],
   "end_xy": [
    282824.1274122907,
    4832952.791239146
   ]
  },
  "min_20m": {
   "gradient_pct": -13.159633404057445,
   "start_distance_m": 1338.0,
   "end_distance_m": 1358.0,
   "midpoint_distance_m": 1348.0,
   "start_elevation_m": 256.59820637323867,
   "end_elevation_m": 253.96627969242718,
   "start_xy": [
    282810.4181174595,
    4832946.707530361
   ],
   "end_xy": [
    282828.7417088132,
    4832954.716924813
   ]
  },
  "min_25m": {
   "gradient_pct": -12.776370717442205,
   "start_distance_m": 1338.0,
   "end_distance_m": 1363.0,
   "midpoint_distance_m": 1350.5,
   "start_elevation_m": 256.59820637323867,
   "end_elevation_m": 253.40411369387812,
   "start_xy": [
    282810.4181174595,
    4832946.707530361
   ],
   "end_xy": [
    282833.3559144233,
    4832956.642827514
   ]
  },
  "min_50m": {
   "gradient_pct": -10.591252755196194,
   "start_distance_m": 1338.0,
   "end_distance_m": 1388.0,
   "midpoint_distance_m": 1363.0,
   "start_elevation_m": 256.59820637323867,
   "end_elevation_m": 251.30257999564057,
   "start_xy": [
    282810.4181174595,
    4832946.707530361
   ],
   "end_xy": [
    282854.9458672286,
    4832968.970068039
   ]
  },
  "min_100m": {
   "gradient_pct": -8.073245351891217,
   "start_distance_m": 1308.0,
   "end_distance_m": 1408.0,
   "midpoint_distance_m": 1358.0,
   "start_elevation_m": 258.2759958749055,
   "end_elevation_m": 250.2027505230143,
   "start_xy": [
    282783.23144641833,
    4832934.039262983
   ],
   "end_xy": [
    282870.73732251214,
    4832981.188862396
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 35.2065986387629,
   "start_distance_m": 1744.0,
   "end_distance_m": 1746.0,
   "midpoint_distance_m": 1745.0,
   "start_elevation_m": 287.05616056517914,
   "end_elevation_m": 287.7602925379544,
   "start_xy": [
    282806.74336566386,
    4833288.224640765
   ],
   "end_xy": [
    282807.44232396554,
    4833290.098528813
   ]
  },
  "max_3m": {
   "gradient_pct": 33.115984527025454,
   "start_distance_m": 1732.0,
   "end_distance_m": 1735.0,
   "midpoint_distance_m": 1733.5,
   "start_elevation_m": 284.3191832431336,
   "end_elevation_m": 285.31266277894434,
   "start_xy": [
    282802.5498427987,
    4833276.98122772
   ],
   "end_xy": [
    282803.5981652486,
    4833279.792102688
   ]
  }
 },
 "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": 0.313,
   "obstruction_max_height_m": 36.11,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    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:26919",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/nh/USGS_one_meter_x28y484_NH_CT_RiverNorthL6_2015.tif"
  ],
  "calculated_at": "2026-09-03T08:59:20+00:00",
  "road_source": "/mnt/HC_Volume_106727764/site-corpus-fresh/us/old-stage-road/old-stage-road.geojson",
  "run_id": "canopy-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, NH_CT_RiverNorthL6_2015 (collected 2015)",
  "elevation_tile_ids": [
   "x28y484"
  ],
  "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_River_Lot6_Winnipesaulee_2015_LAS_2017",
   "ept_crs": "EPSG:3857",
   "station_coverage": 0.994,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "Bristol",
  "county": "New Hampshire"
 }
}