{
 "ocl_version": "0.1.0",
 "name": "Gile Hill Road",
 "slug": "gile-hill-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 31.50417643713439,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1517.0,
   "end_distance_m": 1519.0,
   "start_elevation_m": 221.50175048374135,
   "end_elevation_m": 222.13183401248403,
   "min_gradient_pct": -9.058159378210462
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 29.331118073050295,
   "diagnostic": true,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1517.0,
   "end_distance_m": 1520.0,
   "start_elevation_m": 221.50175048374135,
   "end_elevation_m": 222.38168402593286,
   "min_gradient_pct": -8.243029431091031,
   "suppressed_max_gradient_pct": 30.651666233411373,
   "suppressed_location_m": [
    1485.0,
    1488.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 28.34390874604935,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1492.0,
   "end_distance_m": 1497.0,
   "start_elevation_m": 216.43365396575757,
   "end_elevation_m": 217.85084940306004,
   "min_gradient_pct": -7.576090962288049,
   "suppressed_max_gradient_pct": 29.465376543979005,
   "suppressed_location_m": [
    1484.0,
    1489.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 27.284312690295565,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1491.0,
   "end_distance_m": 1501.0,
   "start_elevation_m": 216.1800487517981,
   "end_elevation_m": 218.90848002082765,
   "min_gradient_pct": -7.253249711404521,
   "suppressed_max_gradient_pct": 28.466493887297872,
   "suppressed_location_m": [
    1480.0,
    1490.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.33485284643166,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1491.0,
   "end_distance_m": 1511.0,
   "start_elevation_m": 216.1800487517981,
   "end_elevation_m": 220.64701932108443,
   "min_gradient_pct": -6.062548423231533,
   "suppressed_max_gradient_pct": 27.912722133981163,
   "suppressed_location_m": [
    1480.0,
    1500.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.327158434142348,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1367.0,
   "end_distance_m": 1392.0,
   "start_elevation_m": 193.45409190979896,
   "end_elevation_m": 198.78588151833455,
   "min_gradient_pct": -5.893325814859622,
   "suppressed_max_gradient_pct": 26.85100170461783,
   "suppressed_location_m": [
    1477.0,
    1502.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.17796814639462,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1491.0,
   "end_distance_m": 1541.0,
   "start_elevation_m": 216.1800487517981,
   "end_elevation_m": 226.2690328249954,
   "min_gradient_pct": -5.571464402533707,
   "suppressed_max_gradient_pct": 22.705807046628077,
   "suppressed_location_m": [
    1477.0,
    1527.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 14.275805366706804,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1329.0,
   "end_distance_m": 1429.0,
   "start_elevation_m": 189.46847136854672,
   "end_elevation_m": 203.74427673525352,
   "min_gradient_pct": -5.071516695835612,
   "suppressed_max_gradient_pct": 20.63894816381753,
   "suppressed_location_m": [
    1438.0,
    1538.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.403,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 153.0,
  "shape_class": "sustained"
 },
 "length_m": 1598.5130093607447,
 "start_elevation_m": 130.56475428759953,
 "end_elevation_m": 230.1828850213938,
 "endpoint_gain_m": 99.61813073379426,
 "overall_gradient_pct": 6.2319249296339585,
 "accumulated_ascent_m": 111.36154372504967,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 28.34390874604935,
   "start_distance_m": 1492.0,
   "end_distance_m": 1497.0,
   "midpoint_distance_m": 1494.5,
   "start_elevation_m": 216.43365396575757,
   "end_elevation_m": 217.85084940306004,
   "start_xy": [
    290139.54676601326,
    4778725.773454752
   ],
   "end_xy": [
    290140.2725970968,
    4778720.831345352
   ]
  },
  "max_10m": {
   "gradient_pct": 27.284312690295565,
   "start_distance_m": 1491.0,
   "end_distance_m": 1501.0,
   "midpoint_distance_m": 1496.0,
   "start_elevation_m": 216.1800487517981,
   "end_elevation_m": 218.90848002082765,
   "start_xy": [
    290139.42305534566,
    4778726.765773084
   ],
   "end_xy": [
    290141.2050089231,
    4778716.941537106
   ]
  },
  "max_20m": {
   "gradient_pct": 22.33485284643166,
   "start_distance_m": 1491.0,
   "end_distance_m": 1511.0,
   "midpoint_distance_m": 1501.0,
   "start_elevation_m": 216.1800487517981,
   "end_elevation_m": 220.64701932108443,
   "start_xy": [
    290139.42305534566,
    4778726.765773084
   ],
   "end_xy": [
    290143.53603848885,
    4778707.217016493
   ]
  },
  "max_25m": {
   "gradient_pct": 21.327158434142348,
   "start_distance_m": 1367.0,
   "end_distance_m": 1392.0,
   "midpoint_distance_m": 1379.5,
   "start_elevation_m": 193.45409190979896,
   "end_elevation_m": 198.78588151833455,
   "start_xy": [
    290141.3488571923,
    4778847.109428867
   ],
   "end_xy": [
    290150.51010972855,
    4778824.311291999
   ]
  },
  "max_50m": {
   "gradient_pct": 20.17796814639462,
   "start_distance_m": 1491.0,
   "end_distance_m": 1541.0,
   "midpoint_distance_m": 1516.0,
   "start_elevation_m": 216.1800487517981,
   "end_elevation_m": 226.2690328249954,
   "start_xy": [
    290139.42305534566,
    4778726.765773084
   ],
   "end_xy": [
    290157.4896091232,
    4778680.721296812
   ]
  },
  "max_100m": {
   "gradient_pct": 14.275805366706804,
   "start_distance_m": 1329.0,
   "end_distance_m": 1429.0,
   "midpoint_distance_m": 1379.0,
   "start_elevation_m": 189.46847136854672,
   "end_elevation_m": 203.74427673525352,
   "start_xy": [
    290116.55742734653,
    4778875.820133613
   ],
   "end_xy": [
    290143.7528451352,
    4778788.032576626
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -7.576090962288049,
   "start_distance_m": 1323.0,
   "end_distance_m": 1328.0,
   "midpoint_distance_m": 1325.5,
   "start_elevation_m": 189.8568862305491,
   "end_elevation_m": 189.4780816824347,
   "start_xy": [
    290112.8556313284,
    4778872.210961864
   ],
   "end_xy": [
    290115.89955229097,
    4778876.177641229
   ]
  },
  "min_10m": {
   "gradient_pct": -7.253249711404521,
   "start_distance_m": 1318.0,
   "end_distance_m": 1328.0,
   "midpoint_distance_m": 1323.0,
   "start_elevation_m": 190.20340665357514,
   "end_elevation_m": 189.4780816824347,
   "start_xy": [
    290109.8117103659,
    4778868.244282501
   ],
   "end_xy": [
    290115.89955229097,
    4778876.177641229
   ]
  },
  "min_20m": {
   "gradient_pct": -6.062548423231533,
   "start_distance_m": 267.0,
   "end_distance_m": 287.0,
   "midpoint_distance_m": 277.0,
   "start_elevation_m": 137.81623646161881,
   "end_elevation_m": 136.6037267769725,
   "start_xy": [
    289157.1030427491,
    4778552.210498637
   ],
   "end_xy": [
    289176.95173909486,
    4778554.665952439
   ]
  },
  "min_25m": {
   "gradient_pct": -5.893325814859622,
   "start_distance_m": 267.0,
   "end_distance_m": 292.0,
   "midpoint_distance_m": 279.5,
   "start_elevation_m": 137.81623646161881,
   "end_elevation_m": 136.3429050079039,
   "start_xy": [
    289157.1030427491,
    4778552.210498637
   ],
   "end_xy": [
    289181.9124420906,
    4778555.291522271
   ]
  },
  "min_50m": {
   "gradient_pct": -5.571464402533707,
   "start_distance_m": 910.0,
   "end_distance_m": 960.0,
   "midpoint_distance_m": 935.0,
   "start_elevation_m": 172.9053485828311,
   "end_elevation_m": 170.11961638156424,
   "start_xy": [
    289792.90796760144,
    4778644.411105374
   ],
   "end_xy": [
    289840.684306844,
    4778659.02372807
   ]
  },
  "min_100m": {
   "gradient_pct": -5.071516695835612,
   "start_distance_m": 871.0,
   "end_distance_m": 971.0,
   "midpoint_distance_m": 921.0,
   "start_elevation_m": 174.77271126642734,
   "end_elevation_m": 169.70119457059172,
   "start_xy": [
    289754.8858457195,
    4778635.732496767
   ],
   "end_xy": [
    289851.28964906785,
    4778661.943782233
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 31.50417643713439,
   "start_distance_m": 1517.0,
   "end_distance_m": 1519.0,
   "midpoint_distance_m": 1518.0,
   "start_elevation_m": 221.50175048374135,
   "end_elevation_m": 222.13183401248403,
   "start_xy": [
    290146.32768668747,
    4778701.922217782
   ],
   "end_xy": [
    290147.2939780144,
    4778700.171137809
   ]
  },
  "max_3m": {
   "gradient_pct": 29.331118073050295,
   "start_distance_m": 1517.0,
   "end_distance_m": 1520.0,
   "midpoint_distance_m": 1518.5,
   "start_elevation_m": 221.50175048374135,
   "end_elevation_m": 222.38168402593286,
   "start_xy": [
    290146.32768668747,
    4778701.922217782
   ],
   "end_xy": [
    290147.77712367784,
    4778699.295597822
   ]
  }
 },
 "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": {
  "no_bench_suppression": {
   "masked_fraction": 0.038,
   "windows_resited": [
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.543,
   "obstruction_max_height_m": 28.54,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    1430.0,
    1490.0
   ]
  ],
  "review": [],
  "extent": []
 },
 "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:26919",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/nh/USGS_1M_19_x28y478_NH_Coastal_2019_B19.tif",
   "data/cache/usa/nh/USGS_1M_19_x29y478_NH_Coastal_2019_B19.tif"
  ],
  "calculated_at": "2026-09-04T21:47:30+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/new-hampshire-260822.osm.pbf",
  "osm_snapshot": "2026-08-21T20:21:11Z",
  "run_id": "hunt-wave1-260905",
  "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, NH_Coastal_2019_B19 (collected 2019)",
  "elevation_tile_ids": [
   "x28y478",
   "x29y478"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://s3-us-west-2.amazonaws.com/usgs-lidar-public/NH_Coastal_2_2019",
   "ept_crs": "EPSG:3857",
   "station_coverage": 0.991,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "Dunbarton",
  "county": "New Hampshire"
 }
}