{
 "ocl_version": "0.1.0",
 "name": "Gallup Pitch Road",
 "slug": "gallup-pitch-road",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 24.421339275227183,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 461.0,
   "end_distance_m": 463.0,
   "start_elevation_m": 545.1159309248744,
   "end_elevation_m": 545.604357710379,
   "min_gradient_pct": 0.712604545145723
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.042188109566116,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 461.0,
   "end_distance_m": 464.0,
   "start_elevation_m": 545.1159309248744,
   "end_elevation_m": 545.8371965681614,
   "min_gradient_pct": 1.6757845507527236
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.683906508342716,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 459.0,
   "end_distance_m": 464.0,
   "start_elevation_m": 544.6530012427443,
   "end_elevation_m": 545.8371965681614,
   "min_gradient_pct": 2.3436809163604266
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.732572801452307,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 455.0,
   "end_distance_m": 465.0,
   "start_elevation_m": 543.7943440488799,
   "end_elevation_m": 546.0676013290251,
   "min_gradient_pct": 2.655415750615475
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.02975094322744,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 446.0,
   "end_distance_m": 466.0,
   "start_elevation_m": 542.0692598971489,
   "end_elevation_m": 546.2752100857944,
   "min_gradient_pct": 3.529407756388423
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.153426116610717,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 442.0,
   "end_distance_m": 467.0,
   "start_elevation_m": 541.4169741315948,
   "end_elevation_m": 546.4553306607474,
   "min_gradient_pct": 3.736342067435544
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.60045915133719,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 419.0,
   "end_distance_m": 469.0,
   "start_elevation_m": 537.9667913821501,
   "end_elevation_m": 546.7670209578187,
   "min_gradient_pct": 4.3466668518101415
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.78311706905339,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 16.0,
   "end_distance_m": 116.0,
   "start_elevation_m": 494.2437122555739,
   "end_elevation_m": 510.0268293246273,
   "min_gradient_pct": 7.016188710255051
  }
 ],
 "shape": {
  "ascent_concentration": 0.34,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 129.0,
  "shape_class": "sustained"
 },
 "length_m": 554.7051334201234,
 "start_elevation_m": 493.03125276959145,
 "end_elevation_m": 550.7905767514663,
 "endpoint_gain_m": 57.7593239818749,
 "overall_gradient_pct": 10.41261753352642,
 "accumulated_ascent_m": 57.764229669609335,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.683906508342716,
   "start_distance_m": 459.0,
   "end_distance_m": 464.0,
   "midpoint_distance_m": 461.5,
   "start_elevation_m": 544.6530012427443,
   "end_elevation_m": 545.8371965681614,
   "start_xy": [
    675778.8875231487,
    4754238.876998076
   ],
   "end_xy": [
    675778.0560210025,
    4754233.946622413
   ]
  },
  "max_10m": {
   "gradient_pct": 22.732572801452307,
   "start_distance_m": 455.0,
   "end_distance_m": 465.0,
   "midpoint_distance_m": 460.0,
   "start_elevation_m": 543.7943440488799,
   "end_elevation_m": 546.0676013290251,
   "start_xy": [
    675779.5527248656,
    4754242.821298607
   ],
   "end_xy": [
    675777.8897205732,
    4754232.9605472805
   ]
  },
  "max_20m": {
   "gradient_pct": 21.02975094322744,
   "start_distance_m": 446.0,
   "end_distance_m": 466.0,
   "midpoint_distance_m": 456.0,
   "start_elevation_m": 542.0692598971489,
   "end_elevation_m": 546.2752100857944,
   "start_xy": [
    675781.0494287288,
    4754251.695974801
   ],
   "end_xy": [
    675777.7234201441,
    4754231.974472147
   ]
  },
  "max_25m": {
   "gradient_pct": 20.153426116610717,
   "start_distance_m": 442.0,
   "end_distance_m": 467.0,
   "midpoint_distance_m": 454.5,
   "start_elevation_m": 541.4169741315948,
   "end_elevation_m": 546.4553306607474,
   "start_xy": [
    675781.7146304458,
    4754255.640275331
   ],
   "end_xy": [
    675777.5571197148,
    4754230.988397015
   ]
  },
  "max_50m": {
   "gradient_pct": 17.60045915133719,
   "start_distance_m": 419.0,
   "end_distance_m": 469.0,
   "midpoint_distance_m": 444.0,
   "start_elevation_m": 537.9667913821501,
   "end_elevation_m": 546.7670209578187,
   "start_xy": [
    675785.5395403183,
    4754278.320003382
   ],
   "end_xy": [
    675777.2245188563,
    4754229.01624675
   ]
  },
  "max_100m": {
   "gradient_pct": 15.78311706905339,
   "start_distance_m": 16.0,
   "end_distance_m": 116.0,
   "midpoint_distance_m": 66.0,
   "start_elevation_m": 494.2437122555739,
   "end_elevation_m": 510.0268293246273,
   "start_xy": [
    676143.0679624431,
    4754253.2641070485
   ],
   "end_xy": [
    676048.4274905807,
    4754284.519502415
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 2.3436809163604266,
   "start_distance_m": 482.0,
   "end_distance_m": 487.0,
   "midpoint_distance_m": 484.5,
   "start_elevation_m": 547.5855869110633,
   "end_elevation_m": 547.7027709568813,
   "start_xy": [
    675766.3838410219,
    4754227.373380366
   ],
   "end_xy": [
    675761.4011234662,
    4754227.788742568
   ]
  },
  "min_10m": {
   "gradient_pct": 2.655415750615475,
   "start_distance_m": 481.0,
   "end_distance_m": 491.0,
   "midpoint_distance_m": 486.0,
   "start_elevation_m": 547.5542758629109,
   "end_elevation_m": 547.8198174379725,
   "start_xy": [
    675767.3803845331,
    4754227.290307925
   ],
   "end_xy": [
    675757.4149494215,
    4754228.12103233
   ]
  },
  "min_20m": {
   "gradient_pct": 3.529407756388423,
   "start_distance_m": 479.0,
   "end_distance_m": 499.0,
   "midpoint_distance_m": 489.0,
   "start_elevation_m": 547.4821676568539,
   "end_elevation_m": 548.1880492081316,
   "start_xy": [
    675769.3734715554,
    4754227.124163045
   ],
   "end_xy": [
    675749.438453342,
    4754228.729204644
   ]
  },
  "min_25m": {
   "gradient_pct": 3.736342067435544,
   "start_distance_m": 479.0,
   "end_distance_m": 504.0,
   "midpoint_distance_m": 491.5,
   "start_elevation_m": 547.4821676568539,
   "end_elevation_m": 548.4162531737128,
   "start_xy": [
    675769.3734715554,
    4754227.124163045
   ],
   "end_xy": [
    675744.4485752147,
    4754229.047192498
   ]
  },
  "min_50m": {
   "gradient_pct": 4.3466668518101415,
   "start_distance_m": 479.0,
   "end_distance_m": 529.0,
   "midpoint_distance_m": 504.0,
   "start_elevation_m": 547.4821676568539,
   "end_elevation_m": 549.655501082759,
   "start_xy": [
    675769.3734715554,
    4754227.124163045
   ],
   "end_xy": [
    675719.4991845784,
    4754230.637131767
   ]
  },
  "min_100m": {
   "gradient_pct": 7.016188710255051,
   "start_distance_m": 218.0,
   "end_distance_m": 318.0,
   "midpoint_distance_m": 268.0,
   "start_elevation_m": 519.8197952592205,
   "end_elevation_m": 526.8359839694756,
   "start_xy": [
    675950.0323611585,
    4754311.051433047
   ],
   "end_xy": [
    675853.1087186303,
    4754335.360687073
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 24.421339275227183,
   "start_distance_m": 461.0,
   "end_distance_m": 463.0,
   "midpoint_distance_m": 462.0,
   "start_elevation_m": 545.1159309248744,
   "end_elevation_m": 545.604357710379,
   "start_xy": [
    675778.5549222901,
    4754236.904847811
   ],
   "end_xy": [
    675778.2223214317,
    4754234.932697546
   ]
  },
  "max_3m": {
   "gradient_pct": 24.042188109566116,
   "start_distance_m": 461.0,
   "end_distance_m": 464.0,
   "midpoint_distance_m": 462.5,
   "start_elevation_m": 545.1159309248744,
   "end_elevation_m": 545.8371965681614,
   "start_xy": [
    675778.5549222901,
    4754236.904847811
   ],
   "end_xy": [
    675778.0560210025,
    4754233.946622413
   ]
  }
 },
 "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"
  ]
 },
 "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_x67y476_VT_Statewide_A23.tif"
  ],
  "calculated_at": "2026-08-25T00:02:36+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-2-260824",
  "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": [
   "x67y476"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 12.7% over 200 m (Terrain 50), gain 57.8 m over 555 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 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": "Wilmington",
  "county": "Vermont"
 }
}