{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (43.2545, -72.5197)",
 "slug": "discovered-lane-43-2545-72-5197",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 45.49675575995593,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 620.0,
   "end_distance_m": 622.0,
   "start_elevation_m": 333.82567807028914,
   "end_elevation_m": 334.73561318548826,
   "min_gradient_pct": -36.74638285182539,
   "suppressed_max_gradient_pct": 56.86699954931669,
   "suppressed_location_m": [
    422.0,
    424.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 44.741180763425824,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 619.0,
   "end_distance_m": 622.0,
   "start_elevation_m": 333.3933777625855,
   "end_elevation_m": 334.73561318548826,
   "min_gradient_pct": -34.934400655536514,
   "suppressed_max_gradient_pct": 48.58344357961452,
   "suppressed_location_m": [
    421.0,
    424.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 43.60219957073127,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 618.0,
   "end_distance_m": 623.0,
   "start_elevation_m": 332.9672043372724,
   "end_elevation_m": 335.14731431580896,
   "min_gradient_pct": -33.077719139550936
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 38.684252531711536,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 613.0,
   "end_distance_m": 623.0,
   "start_elevation_m": 331.2788890626378,
   "end_elevation_m": 335.14731431580896,
   "min_gradient_pct": -29.043027893995372
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 31.733443408500932,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 611.0,
   "end_distance_m": 631.0,
   "start_elevation_m": 330.63435611997954,
   "end_elevation_m": 336.98104480167973,
   "min_gradient_pct": -19.79714973265004
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 29.392560389369464,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 611.0,
   "end_distance_m": 636.0,
   "start_elevation_m": 330.63435611997954,
   "end_elevation_m": 337.9824962173219,
   "min_gradient_pct": -17.071956856618726,
   "suppressed_max_gradient_pct": 30.2051296315542,
   "suppressed_location_m": [
    599.0,
    624.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.319791005076127,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 315.0,
   "end_distance_m": 365.0,
   "start_elevation_m": 296.76276688132555,
   "end_elevation_m": 305.4226623838636,
   "min_gradient_pct": -7.020902829851593,
   "suppressed_max_gradient_pct": 26.295821191928667,
   "suppressed_location_m": [
    585.0,
    635.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 13.176703671644475,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 319.0,
   "end_distance_m": 419.0,
   "start_elevation_m": 297.3554080459751,
   "end_elevation_m": 310.53211171761956,
   "min_gradient_pct": -3.480872205582898,
   "suppressed_max_gradient_pct": 18.433308967616313,
   "suppressed_location_m": [
    536.0,
    636.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.514,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 67.0,
  "shape_class": "stepped"
 },
 "length_m": 1456.8586668799842,
 "start_elevation_m": 281.6863136091943,
 "end_elevation_m": 353.98637059178805,
 "endpoint_gain_m": 72.30005698259373,
 "overall_gradient_pct": 4.962736511526674,
 "accumulated_ascent_m": 100.90003003998146,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 43.60219957073127,
   "start_distance_m": 618.0,
   "end_distance_m": 623.0,
   "midpoint_distance_m": 620.5,
   "start_elevation_m": 332.9672043372724,
   "end_elevation_m": 335.14731431580896,
   "start_xy": [
    701275.6114637133,
    4791911.127862152
   ],
   "end_xy": [
    701278.6506811599,
    4791915.09814612
   ]
  },
  "max_10m": {
   "gradient_pct": 38.684252531711536,
   "start_distance_m": 613.0,
   "end_distance_m": 623.0,
   "midpoint_distance_m": 618.0,
   "start_elevation_m": 331.2788890626378,
   "end_elevation_m": 335.14731431580896,
   "start_xy": [
    701272.5716157018,
    4791907.158060637
   ],
   "end_xy": [
    701278.6506811599,
    4791915.09814612
   ]
  },
  "max_20m": {
   "gradient_pct": 31.733443408500932,
   "start_distance_m": 611.0,
   "end_distance_m": 631.0,
   "midpoint_distance_m": 621.0,
   "start_elevation_m": 330.63435611997954,
   "end_elevation_m": 336.98104480167973,
   "start_xy": [
    701271.3551939061,
    4791905.570509804
   ],
   "end_xy": [
    701283.5144379783,
    4791921.449828544
   ]
  },
  "max_25m": {
   "gradient_pct": 29.392560389369464,
   "start_distance_m": 611.0,
   "end_distance_m": 636.0,
   "midpoint_distance_m": 623.5,
   "start_elevation_m": 330.63435611997954,
   "end_elevation_m": 337.9824962173219,
   "start_xy": [
    701271.3551939061,
    4791905.570509804
   ],
   "end_xy": [
    701286.5542859895,
    4791925.419630059
   ]
  },
  "max_50m": {
   "gradient_pct": 17.319791005076127,
   "start_distance_m": 315.0,
   "end_distance_m": 365.0,
   "midpoint_distance_m": 340.0,
   "start_elevation_m": 296.76276688132555,
   "end_elevation_m": 305.4226623838636,
   "start_xy": [
    701072.1848743815,
    4791740.022649802
   ],
   "end_xy": [
    701100.6417412836,
    4791780.006488453
   ]
  },
  "max_100m": {
   "gradient_pct": 13.176703671644475,
   "start_distance_m": 319.0,
   "end_distance_m": 419.0,
   "midpoint_distance_m": 369.0,
   "start_elevation_m": 297.3554080459751,
   "end_elevation_m": 310.53211171761956,
   "start_xy": [
    701074.9992654573,
    4791742.865043665
   ],
   "end_xy": [
    701112.6598283038,
    4791832.238098274
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -33.077719139550936,
   "start_distance_m": 649.0,
   "end_distance_m": 654.0,
   "midpoint_distance_m": 651.5,
   "start_elevation_m": 337.20071770765577,
   "end_elevation_m": 335.5468317506782,
   "start_xy": [
    701294.4577428458,
    4791935.741226677
   ],
   "end_xy": [
    701297.4975908571,
    4791939.711028192
   ]
  },
  "min_10m": {
   "gradient_pct": -29.043027893995372,
   "start_distance_m": 645.0,
   "end_distance_m": 655.0,
   "midpoint_distance_m": 650.0,
   "start_elevation_m": 338.2022406144533,
   "end_elevation_m": 335.29793782505374,
   "start_xy": [
    701292.0264950015,
    4791932.564903012
   ],
   "end_xy": [
    701298.1055604594,
    4791940.504988494
   ]
  },
  "min_20m": {
   "gradient_pct": -19.79714973265004,
   "start_distance_m": 643.0,
   "end_distance_m": 663.0,
   "midpoint_distance_m": 653.0,
   "start_elevation_m": 338.3729333956228,
   "end_elevation_m": 334.4135034490928,
   "start_xy": [
    701290.8105557967,
    4791930.976982405
   ],
   "end_xy": [
    701302.9693172777,
    4791946.856670919
   ]
  },
  "min_25m": {
   "gradient_pct": -17.071956856618726,
   "start_distance_m": 644.0,
   "end_distance_m": 669.0,
   "midpoint_distance_m": 656.5,
   "start_elevation_m": 338.363978241826,
   "end_elevation_m": 334.0959890276713,
   "start_xy": [
    701291.4185253992,
    4791931.7709427085
   ],
   "end_xy": [
    701306.6176174826,
    4791951.620062963
   ]
  },
  "min_50m": {
   "gradient_pct": -7.020902829851593,
   "start_distance_m": 464.0,
   "end_distance_m": 514.0,
   "midpoint_distance_m": 489.0,
   "start_elevation_m": 318.71873708334283,
   "end_elevation_m": 315.20828566841703,
   "start_xy": [
    701155.569124516,
    4791835.617044365
   ],
   "end_xy": [
    701205.3733143768,
    4791837.001763393
   ]
  },
  "min_100m": {
   "gradient_pct": -3.480872205582898,
   "start_distance_m": 1280.0,
   "end_distance_m": 1380.0,
   "midpoint_distance_m": 1330.0,
   "start_elevation_m": 357.8880711717986,
   "end_elevation_m": 354.4071989662157,
   "start_xy": [
    701445.6768544397,
    4792522.065747707
   ],
   "end_xy": [
    701488.3008381013,
    4792610.181622423
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 45.49675575995593,
   "start_distance_m": 620.0,
   "end_distance_m": 622.0,
   "midpoint_distance_m": 621.0,
   "start_elevation_m": 333.82567807028914,
   "end_elevation_m": 334.73561318548826,
   "start_xy": [
    701276.8267723529,
    4791912.716265211
   ],
   "end_xy": [
    701278.0427115577,
    4791914.304185817
   ]
  },
  "max_3m": {
   "gradient_pct": 44.741180763425824,
   "start_distance_m": 619.0,
   "end_distance_m": 622.0,
   "midpoint_distance_m": 620.5,
   "start_elevation_m": 333.3933777625855,
   "end_elevation_m": 334.73561318548826,
   "start_xy": [
    701276.2191775809,
    4791911.922018121
   ],
   "end_xy": [
    701278.0427115577,
    4791914.304185817
   ]
  }
 },
 "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": 0.034,
   "windows_resited": [
    2.0,
    3.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    420.0,
    425.0
   ],
   [
    559.0,
    601.0
   ]
  ],
  "review": [],
  "extent": [],
  "suggested_summit_cut_m": 1271.0,
  "trailing_descent_m": 3.9
 },
 "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_x70y480_VT_Statewide_A23.tif"
  ],
  "calculated_at": "2026-08-25T06:12:35+00:00",
  "road_source": "../ne-docs/vt/discovered-lane-43-2545-72-5197/discovered-lane-43-2545-72-5197.geojson",
  "run_id": "rebatch-xsection-vt-260825",
  "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": [
   "x70y480"
  ],
  "climb_origin": "discovered",
  "notes": "NE box session: masked re-batch, xsection channel-crossing evidence (calibrated vs the NHD-confirmed population, 2026-08-25) + manifest masks where present. ADOPTED (NE wave 1, 2026-08-25): clean-steep,qualified-steep. Wales dials per PRODUCTION 'US ADOPTION DIALS'. MASKED RE-BATCH (2026-08-25): culvert-class V-dip masks applied (NHD flowline / xsection channel-crossing evidence, ne-adoption-audits); superseded values in B2 redo trees.",
  "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",
  "mask_ranges_m": [
   [
    564.0,
    596.0
   ]
  ],
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "Springfield",
  "county": "Vermont"
 }
}