{
 "ocl_version": "0.1.0",
 "name": "Howe Farm Road",
 "slug": "howe-farm-road",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 30.082019995137443,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 739.0,
   "end_distance_m": 741.0,
   "start_elevation_m": 265.9780508896688,
   "end_elevation_m": 266.57969128957154,
   "min_gradient_pct": -2.017399871265013
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 28.160687050016502,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 739.0,
   "end_distance_m": 742.0,
   "start_elevation_m": 265.9780508896688,
   "end_elevation_m": 266.8228715011693,
   "min_gradient_pct": -1.3626255455164937
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.03163359889777,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1442.0,
   "end_distance_m": 1447.0,
   "start_elevation_m": 352.6020838951147,
   "end_elevation_m": 353.90366557505956,
   "min_gradient_pct": -1.1467880968967847
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.195758269277917,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1437.0,
   "end_distance_m": 1447.0,
   "start_elevation_m": 351.38408974813177,
   "end_elevation_m": 353.90366557505956,
   "min_gradient_pct": -0.8572478062782807
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.522012110823823,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1430.0,
   "end_distance_m": 1450.0,
   "start_elevation_m": 349.7169135525742,
   "end_elevation_m": 354.621315974739,
   "min_gradient_pct": -0.7601950857272755
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.77819177552351,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1430.0,
   "end_distance_m": 1455.0,
   "start_elevation_m": 349.7169135525742,
   "end_elevation_m": 355.6614614964551,
   "min_gradient_pct": -0.7352309092967744
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.721883100658488,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1422.0,
   "end_distance_m": 1472.0,
   "start_elevation_m": 348.15773072979516,
   "end_elevation_m": 358.5186722801244,
   "min_gradient_pct": -0.3678323591549315
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.48537758495695,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1423.0,
   "end_distance_m": 1523.0,
   "start_elevation_m": 348.31940979379,
   "end_elevation_m": 366.80478737874694,
   "min_gradient_pct": 0.6716248008145556
  }
 ],
 "shape": {
  "ascent_concentration": 0.344,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 251.0,
  "shape_class": "sustained"
 },
 "length_m": 1616.6946939870622,
 "start_elevation_m": 183.482039398246,
 "end_elevation_m": 374.63747317399077,
 "endpoint_gain_m": 191.15543377574477,
 "overall_gradient_pct": 11.823842466156723,
 "accumulated_ascent_m": 191.75661449507328,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.03163359889777,
   "start_distance_m": 1442.0,
   "end_distance_m": 1447.0,
   "midpoint_distance_m": 1444.5,
   "start_elevation_m": 352.6020838951147,
   "end_elevation_m": 353.90366557505956,
   "start_xy": [
    683121.5770813744,
    4773783.606515925
   ],
   "end_xy": [
    683123.62594836,
    4773788.167452679
   ]
  },
  "max_10m": {
   "gradient_pct": 25.195758269277917,
   "start_distance_m": 1437.0,
   "end_distance_m": 1447.0,
   "midpoint_distance_m": 1442.0,
   "start_elevation_m": 351.38408974813177,
   "end_elevation_m": 353.90366557505956,
   "start_xy": [
    683119.5282143886,
    4773779.045579171
   ],
   "end_xy": [
    683123.62594836,
    4773788.167452679
   ]
  },
  "max_20m": {
   "gradient_pct": 24.522012110823823,
   "start_distance_m": 1430.0,
   "end_distance_m": 1450.0,
   "midpoint_distance_m": 1440.0,
   "start_elevation_m": 349.7169135525742,
   "end_elevation_m": 354.621315974739,
   "start_xy": [
    683117.1395968436,
    4773772.467724031
   ],
   "end_xy": [
    683124.8552685513,
    4773790.904014732
   ]
  },
  "max_25m": {
   "gradient_pct": 23.77819177552351,
   "start_distance_m": 1430.0,
   "end_distance_m": 1455.0,
   "midpoint_distance_m": 1442.5,
   "start_elevation_m": 349.7169135525742,
   "end_elevation_m": 355.6614614964551,
   "start_xy": [
    683117.1395968436,
    4773772.467724031
   ],
   "end_xy": [
    683126.904135537,
    4773795.464951485
   ]
  },
  "max_50m": {
   "gradient_pct": 20.721883100658488,
   "start_distance_m": 1422.0,
   "end_distance_m": 1472.0,
   "midpoint_distance_m": 1447.0,
   "start_elevation_m": 348.15773072979516,
   "end_elevation_m": 358.5186722801244,
   "start_xy": [
    683114.4637619304,
    4773764.928499435
   ],
   "end_xy": [
    683133.8702832881,
    4773810.97213645
   ]
  },
  "max_100m": {
   "gradient_pct": 18.48537758495695,
   "start_distance_m": 1423.0,
   "end_distance_m": 1523.0,
   "midpoint_distance_m": 1473.0,
   "start_elevation_m": 348.31940979379,
   "end_elevation_m": 366.80478737874694,
   "start_xy": [
    683114.7982412945,
    4773765.870902509
   ],
   "end_xy": [
    683138.850591259,
    4773861.473369746
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -1.1467880968967847,
   "start_distance_m": 68.0,
   "end_distance_m": 73.0,
   "midpoint_distance_m": 70.5,
   "start_elevation_m": 188.02789308892312,
   "end_elevation_m": 187.97055368407828,
   "start_xy": [
    683306.557379702,
    4772461.630402775
   ],
   "end_xy": [
    683307.8114242462,
    4772466.470585858
   ]
  },
  "min_10m": {
   "gradient_pct": -0.8572478062782807,
   "start_distance_m": 65.0,
   "end_distance_m": 75.0,
   "midpoint_distance_m": 70.0,
   "start_elevation_m": 188.0421298712553,
   "end_elevation_m": 187.95640509062747,
   "start_xy": [
    683305.8049529754,
    4772458.726292925
   ],
   "end_xy": [
    683308.313042064,
    4772468.406659092
   ]
  },
  "min_20m": {
   "gradient_pct": -0.7601950857272755,
   "start_distance_m": 68.0,
   "end_distance_m": 88.0,
   "midpoint_distance_m": 78.0,
   "start_elevation_m": 188.02789308892312,
   "end_elevation_m": 187.87585407177767,
   "start_xy": [
    683306.557379702,
    4772461.630402775
   ],
   "end_xy": [
    683311.573557879,
    4772480.991135108
   ]
  },
  "min_25m": {
   "gradient_pct": -0.7352309092967744,
   "start_distance_m": 64.0,
   "end_distance_m": 89.0,
   "midpoint_distance_m": 76.5,
   "start_elevation_m": 188.04995423900715,
   "end_elevation_m": 187.86614651168296,
   "start_xy": [
    683305.5541440665,
    4772457.758256308
   ],
   "end_xy": [
    683311.8004616435,
    4772481.964947151
   ]
  },
  "min_50m": {
   "gradient_pct": -0.3678323591549315,
   "start_distance_m": 52.0,
   "end_distance_m": 102.0,
   "midpoint_distance_m": 77.0,
   "start_elevation_m": 188.05864266291493,
   "end_elevation_m": 187.87472648333747,
   "start_xy": [
    683302.5444371602,
    4772446.141816908
   ],
   "end_xy": [
    683314.6449853709,
    4772494.649925856
   ]
  },
  "min_100m": {
   "gradient_pct": 0.6716248008145556,
   "start_distance_m": 52.0,
   "end_distance_m": 152.0,
   "midpoint_distance_m": 102.0,
   "start_elevation_m": 188.05864266291493,
   "end_elevation_m": 188.7302674637295,
   "start_xy": [
    683302.5444371602,
    4772446.141816908
   ],
   "end_xy": [
    683324.2037264504,
    4772543.722730475
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 30.082019995137443,
   "start_distance_m": 739.0,
   "end_distance_m": 741.0,
   "midpoint_distance_m": 740.0,
   "start_elevation_m": 265.9780508896688,
   "end_elevation_m": 266.57969128957154,
   "start_xy": [
    683256.6590555544,
    4773118.555180862
   ],
   "end_xy": [
    683256.1631221011,
    4773120.492717961
   ]
  },
  "max_3m": {
   "gradient_pct": 28.160687050016502,
   "start_distance_m": 739.0,
   "end_distance_m": 742.0,
   "midpoint_distance_m": 740.5,
   "start_elevation_m": 265.9780508896688,
   "end_elevation_m": 266.8228715011693,
   "start_xy": [
    683256.6590555544,
    4773118.555180862
   ],
   "end_xy": [
    683255.9151553743,
    4773121.46148651
   ]
  }
 },
 "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": {
  "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/vt/USGS_1M_18_x68y478_VT_Statewide_A23.tif"
  ],
  "calculated_at": "2026-08-24T21:23:56+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": "redo-vt-1-260824",
  "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": [
   "x68y478"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 16.6% over 200 m (Terrain 50), gain 128.9 m over 1114 m way. EXTENDED by graph walk: +0 segment(s) at base, +1 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting. DEDUPE: absorbed 2 overlapping proposal(s): howe-farm, potter-road ADOPTED (NE wave 1, 2026-08-25): clean-steep,endurance. Wales dials per PRODUCTION 'US ADOPTION DIALS'.",
  "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": "Jamaica",
  "county": "Vermont"
 }
}