{
 "ocl_version": "0.1.0",
 "name": "Eastman Road",
 "slug": "eastman-road",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 29.313959379908283,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 452.0,
   "end_distance_m": 454.0,
   "start_elevation_m": 524.1975014231989,
   "end_elevation_m": 524.7837806107971,
   "min_gradient_pct": -4.599931857990214
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 26.87865418073822,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 337.0,
   "end_distance_m": 340.0,
   "start_elevation_m": 508.9020583925635,
   "end_elevation_m": 509.70841801798565,
   "min_gradient_pct": -2.4911877816672736
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.957346433383464,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 335.0,
   "end_distance_m": 340.0,
   "start_elevation_m": 508.4105506963165,
   "end_elevation_m": 509.70841801798565,
   "min_gradient_pct": 0.9245905041575497
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.69448539495943,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 34.0,
   "end_distance_m": 44.0,
   "start_elevation_m": 466.38631783004035,
   "end_elevation_m": 468.8557663695363,
   "min_gradient_pct": 1.074821178539196
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.281470118576806,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 30.0,
   "end_distance_m": 50.0,
   "start_elevation_m": 465.5213538554388,
   "end_elevation_m": 470.17764787915416,
   "min_gradient_pct": 1.7868658885265631
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.252015287917402,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 25.0,
   "end_distance_m": 50.0,
   "start_elevation_m": 464.6146440571748,
   "end_elevation_m": 470.17764787915416,
   "min_gradient_pct": 2.3400082340390327
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.68084381113988,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 23.0,
   "end_distance_m": 73.0,
   "start_elevation_m": 464.2114097688445,
   "end_elevation_m": 474.0518316744144,
   "min_gradient_pct": 3.834166435809948
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.148555868831295,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 24.0,
   "end_distance_m": 124.0,
   "start_elevation_m": 464.3970189529837,
   "end_elevation_m": 482.54557482181497,
   "min_gradient_pct": 9.543204538626014
  }
 ],
 "shape": {
  "ascent_concentration": 0.334,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 147.0,
  "shape_class": "sustained"
 },
 "length_m": 534.0136660138274,
 "start_elevation_m": 461.94426965899373,
 "end_elevation_m": 530.6178741646718,
 "endpoint_gain_m": 68.67360450567804,
 "overall_gradient_pct": 12.859896455140502,
 "accumulated_ascent_m": 68.77319195920512,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.957346433383464,
   "start_distance_m": 335.0,
   "end_distance_m": 340.0,
   "midpoint_distance_m": 337.5,
   "start_elevation_m": 508.4105506963165,
   "end_elevation_m": 509.70841801798565,
   "start_xy": [
    696291.3415526919,
    4826633.655296339
   ],
   "end_xy": [
    696286.3666340304,
    4826633.155112061
   ]
  },
  "max_10m": {
   "gradient_pct": 24.69448539495943,
   "start_distance_m": 34.0,
   "end_distance_m": 44.0,
   "midpoint_distance_m": 39.0,
   "start_elevation_m": 466.38631783004035,
   "end_elevation_m": 468.8557663695363,
   "start_xy": [
    696588.1603313205,
    4826626.3999981275
   ],
   "end_xy": [
    696578.174616753,
    4826625.865671844
   ]
  },
  "max_20m": {
   "gradient_pct": 23.281470118576806,
   "start_distance_m": 30.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 40.0,
   "start_elevation_m": 465.5213538554388,
   "end_elevation_m": 470.17764787915416,
   "start_xy": [
    696592.1538804865,
    4826626.6174778
   ],
   "end_xy": [
    696572.1831880125,
    4826625.545076074
   ]
  },
  "max_25m": {
   "gradient_pct": 22.252015287917402,
   "start_distance_m": 25.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 37.5,
   "start_elevation_m": 464.6146440571748,
   "end_elevation_m": 470.17764787915416,
   "start_xy": [
    696596.8766339975,
    4826628.259305827
   ],
   "end_xy": [
    696572.1831880125,
    4826625.545076074
   ]
  },
  "max_50m": {
   "gradient_pct": 19.68084381113988,
   "start_distance_m": 23.0,
   "end_distance_m": 73.0,
   "midpoint_distance_m": 48.0,
   "start_elevation_m": 464.2114097688445,
   "end_elevation_m": 474.0518316744144,
   "start_xy": [
    696598.765735402,
    4826628.916037039
   ],
   "end_xy": [
    696549.2554901409,
    4826626.617706182
   ]
  },
  "max_100m": {
   "gradient_pct": 18.148555868831295,
   "start_distance_m": 24.0,
   "end_distance_m": 124.0,
   "midpoint_distance_m": 74.0,
   "start_elevation_m": 464.3970189529837,
   "end_elevation_m": 482.54557482181497,
   "start_xy": [
    696597.8211846998,
    4826628.587671434
   ],
   "end_xy": [
    696498.6860278471,
    4826632.6738572605
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.9245905041575497,
   "start_distance_m": 510.0,
   "end_distance_m": 515.0,
   "midpoint_distance_m": 512.5,
   "start_elevation_m": 529.5604076108286,
   "end_elevation_m": 529.6066371360365,
   "start_xy": [
    696120.7161239859,
    4826596.7403767435
   ],
   "end_xy": [
    696115.8649021916,
    4826595.529737614
   ]
  },
  "min_10m": {
   "gradient_pct": 1.074821178539196,
   "start_distance_m": 505.0,
   "end_distance_m": 515.0,
   "midpoint_distance_m": 510.0,
   "start_elevation_m": 529.4991550181826,
   "end_elevation_m": 529.6066371360365,
   "start_xy": [
    696125.5673457803,
    4826597.951015873
   ],
   "end_xy": [
    696115.8649021916,
    4826595.529737614
   ]
  },
  "min_20m": {
   "gradient_pct": 1.7868658885265631,
   "start_distance_m": 497.0,
   "end_distance_m": 517.0,
   "midpoint_distance_m": 507.0,
   "start_elevation_m": 529.3067090078091,
   "end_elevation_m": 529.6640821855144,
   "start_xy": [
    696133.2603759881,
    4826600.143589526
   ],
   "end_xy": [
    696113.9244134738,
    4826595.045481962
   ]
  },
  "min_25m": {
   "gradient_pct": 2.3400082340390327,
   "start_distance_m": 492.0,
   "end_distance_m": 517.0,
   "midpoint_distance_m": 504.5,
   "start_elevation_m": 529.0790801270047,
   "end_elevation_m": 529.6640821855144,
   "start_xy": [
    696138.0624280699,
    4826601.536534538
   ],
   "end_xy": [
    696113.9244134738,
    4826595.045481962
   ]
  },
  "min_50m": {
   "gradient_pct": 3.834166435809948,
   "start_distance_m": 484.0,
   "end_distance_m": 534.0,
   "midpoint_distance_m": 509.0,
   "start_elevation_m": 528.7003015339722,
   "end_elevation_m": 530.6173847518771,
   "start_xy": [
    696145.7457114006,
    4826603.765246555
   ],
   "end_xy": [
    696097.4302593728,
    4826590.929308922
   ]
  },
  "min_100m": {
   "gradient_pct": 9.543204538626014,
   "start_distance_m": 434.0,
   "end_distance_m": 534.0,
   "midpoint_distance_m": 484.0,
   "start_elevation_m": 521.0741802132511,
   "end_elevation_m": 530.6173847518771,
   "start_xy": [
    696193.7662322185,
    4826617.694696666
   ],
   "end_xy": [
    696097.4302593728,
    4826590.929308922
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 29.313959379908283,
   "start_distance_m": 452.0,
   "end_distance_m": 454.0,
   "midpoint_distance_m": 453.0,
   "start_elevation_m": 524.1975014231989,
   "end_elevation_m": 524.7837806107971,
   "start_xy": [
    696176.478844724,
    4826612.680094626
   ],
   "end_xy": [
    696174.5580238913,
    4826612.122916621
   ]
  },
  "max_3m": {
   "gradient_pct": 26.87865418073822,
   "start_distance_m": 337.0,
   "end_distance_m": 340.0,
   "midpoint_distance_m": 338.5,
   "start_elevation_m": 508.9020583925635,
   "end_elevation_m": 509.70841801798565,
   "start_xy": [
    696289.3515852272,
    4826633.455222627
   ],
   "end_xy": [
    696286.3666340304,
    4826633.155112061
   ]
  }
 },
 "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_x69y483_VT_Statewide_A23.tif"
  ],
  "calculated_at": "2026-09-04T23:54:50+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": [
   "x69y483"
  ],
  "climb_origin": "discovered",
  "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"
 },
 "area": {
  "place": "Woodstock",
  "county": "Vermont"
 }
}