{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (44.4789, -72.2906)",
 "slug": "discovered-lane-44-4789-72-2906",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 33.66994856619954,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 6.0,
   "end_distance_m": 8.0,
   "start_elevation_m": 395.4894911426343,
   "end_elevation_m": 396.16289011395827,
   "min_gradient_pct": -17.75306337700897,
   "suppressed_max_gradient_pct": 47.12961231611246,
   "suppressed_location_m": [
    1472.0,
    1474.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 31.734373628959627,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 161.0,
   "end_distance_m": 164.0,
   "start_elevation_m": 418.69272135514063,
   "end_elevation_m": 419.6447525640094,
   "min_gradient_pct": -15.874694115062008,
   "suppressed_max_gradient_pct": 45.71713232787147,
   "suppressed_location_m": [
    1471.0,
    1474.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 30.98945032212214,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 159.0,
   "end_distance_m": 164.0,
   "start_elevation_m": 418.0952800479033,
   "end_elevation_m": 419.6447525640094,
   "min_gradient_pct": -14.071466737497076,
   "suppressed_max_gradient_pct": 42.33099132350503,
   "suppressed_location_m": [
    1470.0,
    1475.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 28.94363019360128,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 156.0,
   "end_distance_m": 166.0,
   "start_elevation_m": 417.2861644100943,
   "end_elevation_m": 420.1805274294544,
   "min_gradient_pct": -10.969887595147725,
   "suppressed_max_gradient_pct": 37.13074784150706,
   "suppressed_location_m": [
    1466.0,
    1476.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 25.534643720209544,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 68.0,
   "end_distance_m": 88.0,
   "start_elevation_m": 402.93163544776456,
   "end_elevation_m": 408.0385641918065,
   "min_gradient_pct": -10.515334678269994,
   "suppressed_max_gradient_pct": 29.85395409053865,
   "suppressed_location_m": [
    1457.0,
    1477.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 24.968877291920307,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 67.0,
   "end_distance_m": 92.0,
   "start_elevation_m": 402.70880238668286,
   "end_elevation_m": 408.95102170966294,
   "min_gradient_pct": -8.801858721000144,
   "suppressed_max_gradient_pct": 25.957520805630566,
   "suppressed_location_m": [
    1453.0,
    1478.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.545926197003496,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 56.0,
   "end_distance_m": 106.0,
   "start_elevation_m": 400.90587591877085,
   "end_elevation_m": 410.6788390172726,
   "min_gradient_pct": -6.37830054762162
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.72560802000413,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 68.0,
   "end_distance_m": 168.0,
   "start_elevation_m": 402.93163544776456,
   "end_elevation_m": 420.6572434677687,
   "min_gradient_pct": -3.2106722399498153
  }
 ],
 "shape": {
  "ascent_concentration": 0.42,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 91.0,
  "shape_class": "sustained"
 },
 "length_m": 1806.5900366398946,
 "start_elevation_m": 395.43527496336634,
 "end_elevation_m": 486.6413899907416,
 "endpoint_gain_m": 91.20611502737523,
 "overall_gradient_pct": 5.048523083688147,
 "accumulated_ascent_m": 110.55013466759198,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 30.98945032212214,
   "start_distance_m": 159.0,
   "end_distance_m": 164.0,
   "midpoint_distance_m": 161.5,
   "start_elevation_m": 418.0952800479033,
   "end_elevation_m": 419.6447525640094,
   "start_xy": [
    715632.6128347575,
    4928614.086397579
   ],
   "end_xy": [
    715637.3958403284,
    4928612.6293958835
   ]
  },
  "max_10m": {
   "gradient_pct": 28.94363019360128,
   "start_distance_m": 156.0,
   "end_distance_m": 166.0,
   "midpoint_distance_m": 161.0,
   "start_elevation_m": 417.2861644100943,
   "end_elevation_m": 420.1805274294544,
   "start_xy": [
    715629.7432349853,
    4928614.961266859
   ],
   "end_xy": [
    715639.3028017003,
    4928612.026857516
   ]
  },
  "max_20m": {
   "gradient_pct": 25.534643720209544,
   "start_distance_m": 68.0,
   "end_distance_m": 88.0,
   "midpoint_distance_m": 78.0,
   "start_elevation_m": 402.93163544776456,
   "end_elevation_m": 408.0385641918065,
   "start_xy": [
    715542.9058260389,
    4928622.584794402
   ],
   "end_xy": [
    715562.8234455489,
    4928624.231025336
   ]
  },
  "max_25m": {
   "gradient_pct": 24.968877291920307,
   "start_distance_m": 67.0,
   "end_distance_m": 92.0,
   "midpoint_distance_m": 79.5,
   "start_elevation_m": 402.70880238668286,
   "end_elevation_m": 408.95102170966294,
   "start_xy": [
    715541.9109384549,
    4928622.483805813
   ],
   "end_xy": [
    715566.8234300701,
    4928624.242016859
   ]
  },
  "max_50m": {
   "gradient_pct": 19.545926197003496,
   "start_distance_m": 56.0,
   "end_distance_m": 106.0,
   "midpoint_distance_m": 81.0,
   "start_elevation_m": 400.90587591877085,
   "end_elevation_m": 410.6788390172726,
   "start_xy": [
    715530.9674882282,
    4928621.36986162
   ],
   "end_xy": [
    715580.8233795703,
    4928624.279016759
   ]
  },
  "max_100m": {
   "gradient_pct": 17.72560802000413,
   "start_distance_m": 68.0,
   "end_distance_m": 168.0,
   "midpoint_distance_m": 118.0,
   "start_elevation_m": 402.93163544776456,
   "end_elevation_m": 420.6572434677687,
   "start_xy": [
    715542.9058260389,
    4928622.584794402
   ],
   "end_xy": [
    715641.1900345124,
    4928611.364775796
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -14.071466737497076,
   "start_distance_m": 933.0,
   "end_distance_m": 938.0,
   "midpoint_distance_m": 935.5,
   "start_elevation_m": 456.14271547622747,
   "end_elevation_m": 455.4391421393526,
   "start_xy": [
    716306.709924049,
    4928271.963747722
   ],
   "end_xy": [
    716311.7077327446,
    4928272.1117419815
   ]
  },
  "min_10m": {
   "gradient_pct": -10.969887595147725,
   "start_distance_m": 931.0,
   "end_distance_m": 941.0,
   "midpoint_distance_m": 936.0,
   "start_elevation_m": 456.3480003066907,
   "end_elevation_m": 455.25101154717595,
   "start_xy": [
    716304.7107948381,
    4928271.904743846
   ],
   "end_xy": [
    716314.7064129785,
    4928272.200707977
   ]
  },
  "min_20m": {
   "gradient_pct": -10.515334678269994,
   "start_distance_m": 932.0,
   "end_distance_m": 952.0,
   "midpoint_distance_m": 942.0,
   "start_elevation_m": 456.2826097053899,
   "end_elevation_m": 454.1795427697359,
   "start_xy": [
    716305.7103458387,
    4928271.934706736
   ],
   "end_xy": [
    716325.7016092237,
    4928272.525713668
   ]
  },
  "min_25m": {
   "gradient_pct": -8.801858721000144,
   "start_distance_m": 927.0,
   "end_distance_m": 952.0,
   "midpoint_distance_m": 939.5,
   "start_elevation_m": 456.38000744998595,
   "end_elevation_m": 454.1795427697359,
   "start_xy": [
    716300.7114638343,
    4928271.879730898
   ],
   "end_xy": [
    716325.7016092237,
    4928272.525713668
   ]
  },
  "min_50m": {
   "gradient_pct": -6.37830054762162,
   "start_distance_m": 1710.0,
   "end_distance_m": 1760.0,
   "midpoint_distance_m": 1735.0,
   "start_elevation_m": 487.5425365434566,
   "end_elevation_m": 484.3533862696458,
   "start_xy": [
    717017.756964343,
    4927971.979770069
   ],
   "end_xy": [
    717066.3482294178,
    4927961.444255412
   ]
  },
  "min_100m": {
   "gradient_pct": -3.2106722399498153,
   "start_distance_m": 1665.0,
   "end_distance_m": 1765.0,
   "midpoint_distance_m": 1715.0,
   "start_elevation_m": 487.51683583808705,
   "end_elevation_m": 484.30616359813723,
   "start_xy": [
    716975.9047731298,
    4927988.475518126
   ],
   "end_xy": [
    717071.3463909923,
    4927961.435833993
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 33.66994856619954,
   "start_distance_m": 6.0,
   "end_distance_m": 8.0,
   "midpoint_distance_m": 7.0,
   "start_elevation_m": 395.4894911426343,
   "end_elevation_m": 396.16289011395827,
   "start_xy": [
    715482.7089957509,
    4928609.697998124
   ],
   "end_xy": [
    715484.5389614835,
    4928610.504982994
   ]
  },
  "max_3m": {
   "gradient_pct": 31.734373628959627,
   "start_distance_m": 161.0,
   "end_distance_m": 164.0,
   "midpoint_distance_m": 162.5,
   "start_elevation_m": 418.69272135514063,
   "end_elevation_m": 419.6447525640094,
   "start_xy": [
    715634.5262405551,
    4928613.50426516
   ],
   "end_xy": [
    715637.3958403284,
    4928612.6293958835
   ]
  }
 },
 "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": {
  "no_bench_suppression": {
   "masked_fraction": 0.017,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.034,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 1453.0,
     "end_m": 1478.0,
     "raw_pct": 25.96,
     "reason": "staircase+hump"
    },
    {
     "window_m": 20.0,
     "start_m": 1457.0,
     "end_m": 1477.0,
     "raw_pct": 29.85,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 1466.0,
     "end_m": 1476.0,
     "raw_pct": 37.13,
     "reason": "hump+short-step"
    },
    {
     "window_m": 5.0,
     "start_m": 1470.0,
     "end_m": 1475.0,
     "raw_pct": 42.33,
     "reason": "hump"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.881,
   "obstruction_max_height_m": 25.78,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    1451.0,
    1480.0
   ],
   [
    1620.0,
    1650.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "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_x71y493_VT_Statewide_A23.tif"
  ],
  "calculated_at": "2026-09-11T22:46:56+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": "texture-us-vt-260911",
  "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": [
   "x71y493"
  ],
  "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": "Walden",
  "county": "Vermont"
 }
}