{
 "ocl_version": "0.1.0",
 "name": "Vermont Route 9",
 "slug": "vermont-route-9-2",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 57.42080623243169,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 2262.0,
   "end_distance_m": 2264.0,
   "start_elevation_m": 428.60180497346676,
   "end_elevation_m": 429.7502210981154,
   "min_gradient_pct": -57.24585817649768,
   "suppressed_max_gradient_pct": 73.8252205309351,
   "suppressed_location_m": [
    2268.0,
    2270.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 55.81287112350045,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 2261.0,
   "end_distance_m": 2264.0,
   "start_elevation_m": 428.0758349644104,
   "end_elevation_m": 429.7502210981154,
   "min_gradient_pct": -52.85843398851474,
   "suppressed_max_gradient_pct": 72.7645714439537,
   "suppressed_location_m": [
    2267.0,
    2270.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 54.125939810718364,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 2259.0,
   "end_distance_m": 2264.0,
   "start_elevation_m": 427.04392410757947,
   "end_elevation_m": 429.7502210981154,
   "min_gradient_pct": -46.98309445559971,
   "suppressed_max_gradient_pct": 68.12456711810341,
   "suppressed_location_m": [
    2266.0,
    2271.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 43.48994984759656,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 2254.0,
   "end_distance_m": 2264.0,
   "start_elevation_m": 425.40122611335573,
   "end_elevation_m": 429.7502210981154,
   "min_gradient_pct": -43.00141188932173,
   "suppressed_max_gradient_pct": 60.6536710401042,
   "suppressed_location_m": [
    2262.0,
    2272.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 26.41023593137362,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 2244.0,
   "end_distance_m": 2264.0,
   "start_elevation_m": 424.46817391184067,
   "end_elevation_m": 429.7502210981154,
   "min_gradient_pct": -36.92451523879811,
   "suppressed_max_gradient_pct": 56.106050899987565,
   "suppressed_location_m": [
    2257.0,
    2277.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.625416198979792,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 2239.0,
   "end_distance_m": 2264.0,
   "start_elevation_m": 424.34386704837044,
   "end_elevation_m": 429.7502210981154,
   "min_gradient_pct": -31.665107137140012,
   "suppressed_max_gradient_pct": 52.31477758166784,
   "suppressed_location_m": [
    2255.0,
    2280.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 8.296290375323338,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 2337.0,
   "end_distance_m": 2387.0,
   "start_elevation_m": 443.23556336130883,
   "end_elevation_m": 447.3837085489705,
   "min_gradient_pct": -14.957743423323336,
   "suppressed_max_gradient_pct": 30.89575359178275,
   "suppressed_location_m": [
    2246.0,
    2296.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 8.175872400853109,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 2289.0,
   "end_distance_m": 2389.0,
   "start_elevation_m": 439.3619099366983,
   "end_elevation_m": 447.5377823375514,
   "min_gradient_pct": -3.8574093934944926,
   "suppressed_max_gradient_pct": 19.504037564669716,
   "suppressed_location_m": [
    2246.0,
    2346.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.38,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 44.0,
  "shape_class": "sustained"
 },
 "length_m": 5731.343572955297,
 "start_elevation_m": 354.55448014391095,
 "end_elevation_m": 662.1784155068955,
 "endpoint_gain_m": 307.6239353629845,
 "overall_gradient_pct": 5.367396517887725,
 "accumulated_ascent_m": 315.9864215824358,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 54.125939810718364,
   "start_distance_m": 2259.0,
   "end_distance_m": 2264.0,
   "midpoint_distance_m": 2261.5,
   "start_elevation_m": 427.04392410757947,
   "end_elevation_m": 429.7502210981154,
   "start_xy": [
    653801.6081245774,
    4749263.867832683
   ],
   "end_xy": [
    653800.3773347854,
    4749259.021684581
   ]
  },
  "max_10m": {
   "gradient_pct": 43.48994984759656,
   "start_distance_m": 2254.0,
   "end_distance_m": 2264.0,
   "midpoint_distance_m": 2259.0,
   "start_elevation_m": 425.40122611335573,
   "end_elevation_m": 429.7502210981154,
   "start_xy": [
    653802.8391248703,
    4749268.713927628
   ],
   "end_xy": [
    653800.3773347854,
    4749259.021684581
   ]
  },
  "max_20m": {
   "gradient_pct": 26.41023593137362,
   "start_distance_m": 2244.0,
   "end_distance_m": 2264.0,
   "midpoint_distance_m": 2254.0,
   "start_elevation_m": 424.46817391184067,
   "end_elevation_m": 429.7502210981154,
   "start_xy": [
    653805.3002474084,
    4749278.406340402
   ],
   "end_xy": [
    653800.3773347854,
    4749259.021684581
   ]
  },
  "max_25m": {
   "gradient_pct": 21.625416198979792,
   "start_distance_m": 2239.0,
   "end_distance_m": 2264.0,
   "midpoint_distance_m": 2251.5,
   "start_elevation_m": 424.34386704837044,
   "end_elevation_m": 429.7502210981154,
   "start_xy": [
    653806.53127001,
    4749283.25242943
   ],
   "end_xy": [
    653800.3773347854,
    4749259.021684581
   ]
  },
  "max_50m": {
   "gradient_pct": 8.296290375323338,
   "start_distance_m": 2337.0,
   "end_distance_m": 2387.0,
   "midpoint_distance_m": 2362.0,
   "start_elevation_m": 443.23556336130883,
   "end_elevation_m": 447.3837085489705,
   "start_xy": [
    653783.6128045503,
    4749187.996949341
   ],
   "end_xy": [
    653781.1500449938,
    4749138.31200142
   ]
  },
  "max_100m": {
   "gradient_pct": 8.175872400853109,
   "start_distance_m": 2289.0,
   "end_distance_m": 2389.0,
   "midpoint_distance_m": 2339.0,
   "start_elevation_m": 439.3619099366983,
   "end_elevation_m": 447.5377823375514,
   "start_xy": [
    653794.3143870601,
    4749234.768195964
   ],
   "end_xy": [
    653781.2247416292,
    4749136.313636961
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -46.98309445559971,
   "start_distance_m": 2206.0,
   "end_distance_m": 2211.0,
   "midpoint_distance_m": 2208.5,
   "start_elevation_m": 432.2185628075095,
   "end_elevation_m": 429.8694080847295,
   "start_xy": [
    653814.6551274237,
    4749315.236843906
   ],
   "end_xy": [
    653813.4243376345,
    4749310.390695804
   ]
  },
  "min_10m": {
   "gradient_pct": -43.00141188932173,
   "start_distance_m": 2206.0,
   "end_distance_m": 2216.0,
   "midpoint_distance_m": 2211.0,
   "start_elevation_m": 432.2185628075095,
   "end_elevation_m": 427.9184216185773,
   "start_xy": [
    653814.6551274237,
    4749315.236843906
   ],
   "end_xy": [
    653812.1933150326,
    4749305.544606775
   ]
  },
  "min_20m": {
   "gradient_pct": -36.92451523879811,
   "start_distance_m": 2205.0,
   "end_distance_m": 2225.0,
   "midpoint_distance_m": 2215.0,
   "start_elevation_m": 432.55371900192984,
   "end_elevation_m": 425.1688159541702,
   "start_xy": [
    653814.8554365044,
    4749316.216549436
   ],
   "end_xy": [
    653809.9782516004,
    4749296.821448585
   ]
  },
  "min_25m": {
   "gradient_pct": -31.665107137140012,
   "start_distance_m": 2205.0,
   "end_distance_m": 2230.0,
   "midpoint_distance_m": 2217.5,
   "start_elevation_m": 432.55371900192984,
   "end_elevation_m": 424.63744221764483,
   "start_xy": [
    653814.8554365044,
    4749316.216549436
   ],
   "end_xy": [
    653808.7472508596,
    4749291.975353995
   ]
  },
  "min_50m": {
   "gradient_pct": -14.957743423323336,
   "start_distance_m": 2196.0,
   "end_distance_m": 2246.0,
   "midpoint_distance_m": 2221.0,
   "start_elevation_m": 431.9552403024062,
   "end_elevation_m": 424.4763685907445,
   "start_xy": [
    653816.5716015181,
    4749325.051408844
   ],
   "end_xy": [
    653804.8081243964,
    4749276.46783197
   ]
  },
  "min_100m": {
   "gradient_pct": -3.8574093934944926,
   "start_distance_m": 2146.0,
   "end_distance_m": 2246.0,
   "midpoint_distance_m": 2196.0,
   "start_elevation_m": 428.333777984239,
   "end_elevation_m": 424.4763685907445,
   "start_xy": [
    653827.7816947754,
    4749373.772653751
   ],
   "end_xy": [
    653804.8081243964,
    4749276.46783197
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 57.42080623243169,
   "start_distance_m": 2262.0,
   "end_distance_m": 2264.0,
   "midpoint_distance_m": 2263.0,
   "start_elevation_m": 428.60180497346676,
   "end_elevation_m": 429.7502210981154,
   "start_xy": [
    653800.8692249877,
    4749260.960252086
   ],
   "end_xy": [
    653800.3773347854,
    4749259.021684581
   ]
  },
  "max_3m": {
   "gradient_pct": 55.81287112350045,
   "start_distance_m": 2261.0,
   "end_distance_m": 2264.0,
   "midpoint_distance_m": 2262.5,
   "start_elevation_m": 428.0758349644104,
   "end_elevation_m": 429.7502210981154,
   "start_xy": [
    653801.1152893421,
    4749261.929505578
   ],
   "end_xy": [
    653800.3773347854,
    4749259.021684581
   ]
  }
 },
 "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": {
  "structure_suppression": {
   "masked_fraction": 0.004,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    2204.0,
    2209.0
   ],
   [
    2265.0,
    2281.0
   ]
  ],
  "review": [
   "max5_over_45",
   "max10_over_40",
   "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_x65y475_VT_Statewide_A23.tif",
   "data/cache/usa/vt/USGS_1M_18_x65y476_VT_Statewide_A23.tif"
  ],
  "calculated_at": "2026-09-03T21:48:31+00:00",
  "road_source": "/mnt/HC_Volume_106727764/site-corpus-fresh/us/vermont-route-9-2/vermont-route-9-2.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, VT_Statewide_A23 (collected 2023)",
  "elevation_tile_ids": [
   "x65y475",
   "x65y476"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 EPT corridor failed: VT_Statewide_2_A23: no EPT nodes intersect the corridor; VT_Statewide_1_A23: no EPT nodes intersect the corridor",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "Woodford",
  "county": "Vermont"
 }
}