{
 "ocl_version": "0.1.0",
 "name": "Cochran Way",
 "slug": "cochran-way",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 41.04931565542813,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1977.0,
   "end_distance_m": 1979.0,
   "start_elevation_m": 367.9201975147235,
   "end_elevation_m": 368.74118382783206,
   "min_gradient_pct": -20.847120873341396
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 37.07551047032306,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 710.0,
   "end_distance_m": 713.0,
   "start_elevation_m": 206.6274700030708,
   "end_elevation_m": 207.7397353171805,
   "min_gradient_pct": -18.286181116404048
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 32.42881265772667,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 709.0,
   "end_distance_m": 714.0,
   "start_elevation_m": 206.43950482765678,
   "end_elevation_m": 208.0609454605431,
   "min_gradient_pct": -11.053023653703349
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 26.630528489409926,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1311.0,
   "end_distance_m": 1321.0,
   "start_elevation_m": 272.9796493274054,
   "end_elevation_m": 275.6427021763464,
   "min_gradient_pct": -6.515830814371952
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.16863338436454,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 683.0,
   "end_distance_m": 703.0,
   "start_elevation_m": 202.056431296839,
   "end_elevation_m": 206.49015797371192,
   "min_gradient_pct": -3.690204218491715
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.150690987235066,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 617.0,
   "end_distance_m": 642.0,
   "start_elevation_m": 189.5322799640025,
   "end_elevation_m": 195.06995271081126,
   "min_gradient_pct": -3.0912338929590533
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.7472394436399,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 604.0,
   "end_distance_m": 654.0,
   "start_elevation_m": 187.5519340564706,
   "end_elevation_m": 197.42555377829055,
   "min_gradient_pct": -2.3028397565260548
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.133142118471852,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 604.0,
   "end_distance_m": 704.0,
   "start_elevation_m": 187.5519340564706,
   "end_elevation_m": 206.68507617494245,
   "min_gradient_pct": 2.7791572069862127
  }
 ],
 "shape": {
  "ascent_concentration": 0.297,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 205.0,
  "shape_class": "sustained"
 },
 "length_m": 2274.8439106931714,
 "start_elevation_m": 108.70059710080649,
 "end_elevation_m": 393.3613469042268,
 "endpoint_gain_m": 284.66074980342034,
 "overall_gradient_pct": 12.513418985159333,
 "accumulated_ascent_m": 290.0258947012963,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 32.42881265772667,
   "start_distance_m": 709.0,
   "end_distance_m": 714.0,
   "midpoint_distance_m": 711.5,
   "start_elevation_m": 206.43950482765678,
   "end_elevation_m": 208.0609454605431,
   "start_xy": [
    660571.823477621,
    4917168.898800137
   ],
   "end_xy": [
    660570.5976467034,
    4917164.051475559
   ]
  },
  "max_10m": {
   "gradient_pct": 26.630528489409926,
   "start_distance_m": 1311.0,
   "end_distance_m": 1321.0,
   "midpoint_distance_m": 1316.0,
   "start_elevation_m": 272.9796493274054,
   "end_elevation_m": 275.6427021763464,
   "start_xy": [
    660870.2984452056,
    4916785.680601746
   ],
   "end_xy": [
    660876.5747818702,
    4916778.187740328
   ]
  },
  "max_20m": {
   "gradient_pct": 22.16863338436454,
   "start_distance_m": 683.0,
   "end_distance_m": 703.0,
   "midpoint_distance_m": 693.0,
   "start_elevation_m": 202.056431296839,
   "end_elevation_m": 206.49015797371192,
   "start_xy": [
    660578.3651319629,
    4917194.062400009
   ],
   "end_xy": [
    660573.3330901614,
    4917174.705784723
   ]
  },
  "max_25m": {
   "gradient_pct": 22.150690987235066,
   "start_distance_m": 617.0,
   "end_distance_m": 642.0,
   "midpoint_distance_m": 629.5,
   "start_elevation_m": 189.5322799640025,
   "end_elevation_m": 195.06995271081126,
   "start_xy": [
    660584.9125294073,
    4917259.580871694
   ],
   "end_xy": [
    660583.5656358448,
    4917234.620542934
   ]
  },
  "max_50m": {
   "gradient_pct": 19.7472394436399,
   "start_distance_m": 604.0,
   "end_distance_m": 654.0,
   "midpoint_distance_m": 629.0,
   "start_elevation_m": 187.5519340564706,
   "end_elevation_m": 197.42555377829055,
   "start_xy": [
    660585.501891622,
    4917272.567505291
   ],
   "end_xy": [
    660582.5433398234,
    4917222.664167612
   ]
  },
  "max_100m": {
   "gradient_pct": 19.133142118471852,
   "start_distance_m": 604.0,
   "end_distance_m": 704.0,
   "midpoint_distance_m": 654.0,
   "start_elevation_m": 187.5519340564706,
   "end_elevation_m": 206.68507617494245,
   "start_xy": [
    660585.501891622,
    4917272.567505291
   ],
   "end_xy": [
    660573.0814880714,
    4917173.737953959
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -11.053023653703349,
   "start_distance_m": 2236.0,
   "end_distance_m": 2241.0,
   "midpoint_distance_m": 2238.5,
   "start_elevation_m": 394.6952774752233,
   "end_elevation_m": 394.1426262925381,
   "start_xy": [
    660801.2848460391,
    4915872.812239536
   ],
   "end_xy": [
    660802.537443137,
    4915867.971681664
   ]
  },
  "min_10m": {
   "gradient_pct": -6.515830814371952,
   "start_distance_m": 2237.0,
   "end_distance_m": 2247.0,
   "midpoint_distance_m": 2242.0,
   "start_elevation_m": 394.70986172224156,
   "end_elevation_m": 394.05827864080436,
   "start_xy": [
    660801.5353654588,
    4915871.844127961
   ],
   "end_xy": [
    660804.0405596545,
    4915862.163012218
   ]
  },
  "min_20m": {
   "gradient_pct": -3.690204218491715,
   "start_distance_m": 2221.0,
   "end_distance_m": 2241.0,
   "midpoint_distance_m": 2231.0,
   "start_elevation_m": 394.88066713623647,
   "end_elevation_m": 394.1426262925381,
   "start_xy": [
    660797.5270547456,
    4915887.333913151
   ],
   "end_xy": [
    660802.537443137,
    4915867.971681664
   ]
  },
  "min_25m": {
   "gradient_pct": -3.0912338929590533,
   "start_distance_m": 2221.0,
   "end_distance_m": 2246.0,
   "midpoint_distance_m": 2233.5,
   "start_elevation_m": 394.88066713623647,
   "end_elevation_m": 394.1078586629967,
   "start_xy": [
    660797.5270547456,
    4915887.333913151
   ],
   "end_xy": [
    660803.7900402349,
    4915863.131123792
   ]
  },
  "min_50m": {
   "gradient_pct": -2.3028397565260548,
   "start_distance_m": 2220.0,
   "end_distance_m": 2270.0,
   "midpoint_distance_m": 2245.0,
   "start_elevation_m": 394.88694594468626,
   "end_elevation_m": 393.73552606642323,
   "start_xy": [
    660797.276535326,
    4915888.302024726
   ],
   "end_xy": [
    660809.8025063046,
    4915839.896446007
   ]
  },
  "min_100m": {
   "gradient_pct": 2.7791572069862127,
   "start_distance_m": 2174.0,
   "end_distance_m": 2274.0,
   "midpoint_distance_m": 2224.0,
   "start_elevation_m": 390.680821629185,
   "end_elevation_m": 393.4599788361712,
   "start_xy": [
    660791.4887230188,
    4915933.738594675
   ],
   "end_xy": [
    660810.8045839829,
    4915836.023999711
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 41.04931565542813,
   "start_distance_m": 1977.0,
   "end_distance_m": 1979.0,
   "midpoint_distance_m": 1978.0,
   "start_elevation_m": 367.9201975147235,
   "end_elevation_m": 368.74118382783206,
   "start_xy": [
    660822.0384762379,
    4916127.834832184
   ],
   "end_xy": [
    660821.8317858782,
    4916125.84554108
   ]
  },
  "max_3m": {
   "gradient_pct": 37.07551047032306,
   "start_distance_m": 710.0,
   "end_distance_m": 713.0,
   "midpoint_distance_m": 711.5,
   "start_elevation_m": 206.6274700030708,
   "end_elevation_m": 207.7397353171805,
   "start_xy": [
    660571.5718755309,
    4917167.930969373
   ],
   "end_xy": [
    660570.8382412117,
    4917165.022101277
   ]
  }
 },
 "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": 0.535,
   "obstruction_max_height_m": 31.48,
   "flagged_windows_m": [
    2,
    3,
    5,
    20,
    25,
    50,
    100
   ]
  },
  "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_x66y492_VT_Statewide_A23.tif"
  ],
  "calculated_at": "2026-09-05T00:30:06+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": "hunt-wave2-260905",
  "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": [
   "x66y492"
  ],
  "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": "Richmond",
  "county": "Vermont"
 }
}