{
 "ocl_version": "0.1.0",
 "name": "Pope Road",
 "slug": "pope-road",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 28.99437453186522,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 369.0,
   "end_distance_m": 371.0,
   "start_elevation_m": 471.96471697657756,
   "end_elevation_m": 472.54460446721487,
   "min_gradient_pct": -6.224827708598468
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.01247455758183,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 369.0,
   "end_distance_m": 372.0,
   "start_elevation_m": 471.96471697657756,
   "end_elevation_m": 472.775091213305,
   "min_gradient_pct": -5.642974116032444
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.02925978429721,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 369.0,
   "end_distance_m": 374.0,
   "start_elevation_m": 471.96471697657756,
   "end_elevation_m": 473.1661799657924,
   "min_gradient_pct": -4.885993471925758
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.991005583423657,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 369.0,
   "end_distance_m": 379.0,
   "start_elevation_m": 471.96471697657756,
   "end_elevation_m": 474.16381753491993,
   "min_gradient_pct": -3.456994759541203
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.653598545449654,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 358.0,
   "end_distance_m": 378.0,
   "start_elevation_m": 469.8323621655012,
   "end_elevation_m": 473.9630818745911,
   "min_gradient_pct": -1.1730616247285752
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.525341282381305,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 358.0,
   "end_distance_m": 383.0,
   "start_elevation_m": 469.8323621655012,
   "end_elevation_m": 474.9636974860965,
   "min_gradient_pct": -0.9443610020971391
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.199887256899274,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 340.0,
   "end_distance_m": 390.0,
   "start_elevation_m": 466.65076112609677,
   "end_elevation_m": 476.2507047545464,
   "min_gradient_pct": -0.3757647904762962
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.60430374887403,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 321.0,
   "end_distance_m": 421.0,
   "start_elevation_m": 463.8412942941492,
   "end_elevation_m": 481.4455980430232,
   "min_gradient_pct": 2.3299455309385735
  }
 ],
 "shape": {
  "ascent_concentration": 0.366,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 152.0,
  "shape_class": "sustained"
 },
 "length_m": 428.03081431342684,
 "start_elevation_m": 432.3461543061493,
 "end_elevation_m": 482.2953309600707,
 "endpoint_gain_m": 49.94917665392143,
 "overall_gradient_pct": 11.66952821703766,
 "accumulated_ascent_m": 50.47270140436012,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.02925978429721,
   "start_distance_m": 369.0,
   "end_distance_m": 374.0,
   "midpoint_distance_m": 371.5,
   "start_elevation_m": 471.96471697657756,
   "end_elevation_m": 473.1661799657924,
   "start_xy": [
    696676.0129393763,
    4824056.978570663
   ],
   "end_xy": [
    696673.0739709934,
    4824052.933516295
   ]
  },
  "max_10m": {
   "gradient_pct": 21.991005583423657,
   "start_distance_m": 369.0,
   "end_distance_m": 379.0,
   "midpoint_distance_m": 374.0,
   "start_elevation_m": 471.96471697657756,
   "end_elevation_m": 474.16381753491993,
   "start_xy": [
    696676.0129393763,
    4824056.978570663
   ],
   "end_xy": [
    696670.1350026106,
    4824048.888461927
   ]
  },
  "max_20m": {
   "gradient_pct": 20.653598545449654,
   "start_distance_m": 358.0,
   "end_distance_m": 378.0,
   "midpoint_distance_m": 368.0,
   "start_elevation_m": 469.8323621655012,
   "end_elevation_m": 473.9630818745911,
   "start_xy": [
    696682.4786698186,
    4824065.877690274
   ],
   "end_xy": [
    696670.7227962872,
    4824049.6974728005
   ]
  },
  "max_25m": {
   "gradient_pct": 20.525341282381305,
   "start_distance_m": 358.0,
   "end_distance_m": 383.0,
   "midpoint_distance_m": 370.5,
   "start_elevation_m": 469.8323621655012,
   "end_elevation_m": 474.9636974860965,
   "start_xy": [
    696682.4786698186,
    4824065.877690274
   ],
   "end_xy": [
    696667.7838279043,
    4824045.652418432
   ]
  },
  "max_50m": {
   "gradient_pct": 19.199887256899274,
   "start_distance_m": 340.0,
   "end_distance_m": 390.0,
   "midpoint_distance_m": 365.0,
   "start_elevation_m": 466.65076112609677,
   "end_elevation_m": 476.2507047545464,
   "start_xy": [
    696693.0589559969,
    4824080.439886001
   ],
   "end_xy": [
    696663.6692721683,
    4824039.989342316
   ]
  },
  "max_100m": {
   "gradient_pct": 17.60430374887403,
   "start_distance_m": 321.0,
   "end_distance_m": 421.0,
   "midpoint_distance_m": 371.0,
   "start_elevation_m": 463.8412942941492,
   "end_elevation_m": 481.4455980430232,
   "start_xy": [
    696704.2232930688,
    4824095.813582782
   ],
   "end_xy": [
    696645.4476681945,
    4824014.91000523
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -4.885993471925758,
   "start_distance_m": 12.0,
   "end_distance_m": 17.0,
   "midpoint_distance_m": 14.5,
   "start_elevation_m": 432.65892931237477,
   "end_elevation_m": 432.4146296387785,
   "start_xy": [
    696896.4342988848,
    4824314.95452298
   ],
   "end_xy": [
    696892.9474575146,
    4824311.377090185
   ]
  },
  "min_10m": {
   "gradient_pct": -3.456994759541203,
   "start_distance_m": 10.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 15.0,
   "start_elevation_m": 432.6949895638541,
   "end_elevation_m": 432.3492900879,
   "start_xy": [
    696897.9495282859,
    4824316.25992708
   ],
   "end_xy": [
    696890.8972813352,
    4824309.186935479
   ]
  },
  "min_20m": {
   "gradient_pct": -1.1730616247285752,
   "start_distance_m": 10.0,
   "end_distance_m": 30.0,
   "midpoint_distance_m": 20.0,
   "start_elevation_m": 432.6949895638541,
   "end_elevation_m": 432.4603772389084,
   "start_xy": [
    696897.9495282859,
    4824316.25992708
   ],
   "end_xy": [
    696884.5571537574,
    4824301.487074031
   ]
  },
  "min_25m": {
   "gradient_pct": -0.9443610020971391,
   "start_distance_m": 11.0,
   "end_distance_m": 36.0,
   "midpoint_distance_m": 23.5,
   "start_elevation_m": 432.68955031582794,
   "end_elevation_m": 432.45346006530366,
   "start_xy": [
    696897.1919135854,
    4824315.607225031
   ],
   "end_xy": [
    696881.1313412742,
    4824296.561243255
   ]
  },
  "min_50m": {
   "gradient_pct": -0.3757647904762962,
   "start_distance_m": 10.0,
   "end_distance_m": 60.0,
   "midpoint_distance_m": 35.0,
   "start_elevation_m": 432.6949895638541,
   "end_elevation_m": 432.50710716861596,
   "start_xy": [
    696897.9495282859,
    4824316.25992708
   ],
   "end_xy": [
    696867.5245920325,
    4824276.792137915
   ]
  },
  "min_100m": {
   "gradient_pct": 2.3299455309385735,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 432.3461543061493,
   "end_elevation_m": 434.67609983708786,
   "start_xy": [
    696902.571,
    4824324.756
   ],
   "end_xy": [
    696844.0847319323,
    4824244.438403426
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 28.99437453186522,
   "start_distance_m": 369.0,
   "end_distance_m": 371.0,
   "midpoint_distance_m": 370.0,
   "start_elevation_m": 471.96471697657756,
   "end_elevation_m": 472.54460446721487,
   "start_xy": [
    696676.0129393763,
    4824056.978570663
   ],
   "end_xy": [
    696674.8373520231,
    4824055.360548916
   ]
  },
  "max_3m": {
   "gradient_pct": 27.01247455758183,
   "start_distance_m": 369.0,
   "end_distance_m": 372.0,
   "midpoint_distance_m": 370.5,
   "start_elevation_m": 471.96471697657756,
   "end_elevation_m": 472.775091213305,
   "start_xy": [
    696676.0129393763,
    4824056.978570663
   ],
   "end_xy": [
    696674.2495583466,
    4824054.551538043
   ]
  }
 },
 "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_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_x69y483_VT_Statewide_A23.tif"
  ],
  "calculated_at": "2026-08-24T22:00:37+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": [
   "x69y483"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 15.9% over 200 m (Terrain 50), gain 50.0 m over 428 m way. KEPT at seed extent: no ascending continuation (min_avg=2.0%). ADOPTED (NE wave 1, 2026-08-25): clean-steep. Wales dials per PRODUCTION 'US ADOPTION DIALS'.",
  "canopy_check": "unavailable \u2014 EPT corridor failed: VT_Statewide_2_A23: no corridor points fetched; VT_Statewide_1_A23: no EPT nodes intersect the corridor",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "Woodstock",
  "county": "Vermont"
 }
}