{
 "ocl_version": "0.1.0",
 "name": "Laramies Camp Trail",
 "slug": "laramies-camp-trail",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 21.991849204181335,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 147.0,
   "end_distance_m": 149.0,
   "start_elevation_m": 481.62135235047674,
   "end_elevation_m": 482.06118933456037,
   "min_gradient_pct": -23.64041707107276
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.15235409881302,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 146.0,
   "end_distance_m": 149.0,
   "start_elevation_m": 481.396618711596,
   "end_elevation_m": 482.06118933456037,
   "min_gradient_pct": -22.741929758080914
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.779680478792898,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 146.0,
   "end_distance_m": 151.0,
   "start_elevation_m": 481.396618711596,
   "end_elevation_m": 482.4856027355356,
   "min_gradient_pct": -17.87288912005579
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.41284299160759,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 145.0,
   "end_distance_m": 155.0,
   "start_elevation_m": 481.18674658133267,
   "end_elevation_m": 483.32803088049343,
   "min_gradient_pct": -11.502692677462392
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.73754587225409,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 140.0,
   "end_distance_m": 160.0,
   "start_elevation_m": 480.17964008330125,
   "end_elevation_m": 484.32714925775207,
   "min_gradient_pct": -8.16056645389267
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.431854096455936,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 134.0,
   "end_distance_m": 159.0,
   "start_elevation_m": 479.0395068862275,
   "end_elevation_m": 484.1474704103415,
   "min_gradient_pct": -8.00380758025858
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.74941631456602,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 129.0,
   "end_distance_m": 179.0,
   "start_elevation_m": 478.14453228078685,
   "end_elevation_m": 488.01924043806986,
   "min_gradient_pct": -7.078467062105574
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.64082997940386,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 87.0,
   "end_distance_m": 187.0,
   "start_elevation_m": 471.512983052471,
   "end_elevation_m": 489.15381303187485,
   "min_gradient_pct": -5.9789508225514965
  }
 ],
 "shape": {
  "ascent_concentration": 0.511,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 112.0,
  "shape_class": "stepped"
 },
 "length_m": 3209.1570956430096,
 "start_elevation_m": 460.716891006783,
 "end_elevation_m": 564.6230468481689,
 "endpoint_gain_m": 103.9061558413859,
 "overall_gradient_pct": 3.2378021001981057,
 "accumulated_ascent_m": 140.50348239946413,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.779680478792898,
   "start_distance_m": 146.0,
   "end_distance_m": 151.0,
   "midpoint_distance_m": 148.5,
   "start_elevation_m": 481.396618711596,
   "end_elevation_m": 482.4856027355356,
   "start_xy": [
    331666.7158157736,
    4986541.033070476
   ],
   "end_xy": [
    331668.8772706999,
    4986545.5417413
   ]
  },
  "max_10m": {
   "gradient_pct": 21.41284299160759,
   "start_distance_m": 145.0,
   "end_distance_m": 155.0,
   "midpoint_distance_m": 150.0,
   "start_elevation_m": 481.18674658133267,
   "end_elevation_m": 483.32803088049343,
   "start_xy": [
    331666.28352478833,
    4986540.131336311
   ],
   "end_xy": [
    331670.6064346409,
    4986549.14867796
   ]
  },
  "max_20m": {
   "gradient_pct": 20.73754587225409,
   "start_distance_m": 140.0,
   "end_distance_m": 160.0,
   "midpoint_distance_m": 150.0,
   "start_elevation_m": 480.17964008330125,
   "end_elevation_m": 484.32714925775207,
   "start_xy": [
    331664.22430825303,
    4986535.57776395
   ],
   "end_xy": [
    331672.7678895672,
    4986553.657348784
   ]
  },
  "max_25m": {
   "gradient_pct": 20.431854096455936,
   "start_distance_m": 134.0,
   "end_distance_m": 159.0,
   "midpoint_distance_m": 146.5,
   "start_elevation_m": 479.0395068862275,
   "end_elevation_m": 484.1474704103415,
   "start_xy": [
    331661.99535724364,
    4986530.007146624
   ],
   "end_xy": [
    331672.33559858194,
    4986552.755614619
   ]
  },
  "max_50m": {
   "gradient_pct": 19.74941631456602,
   "start_distance_m": 129.0,
   "end_distance_m": 179.0,
   "midpoint_distance_m": 154.0,
   "start_elevation_m": 478.14453228078685,
   "end_elevation_m": 488.01924043806986,
   "start_xy": [
    331660.13789806917,
    4986525.364965519
   ],
   "end_xy": [
    331682.5083173831,
    4986569.9524727985
   ]
  },
  "max_100m": {
   "gradient_pct": 17.64082997940386,
   "start_distance_m": 87.0,
   "end_distance_m": 187.0,
   "midpoint_distance_m": 137.0,
   "start_elevation_m": 471.512983052471,
   "end_elevation_m": 489.15381303187485,
   "start_xy": [
    331644.2011515063,
    4986486.511144999
   ],
   "end_xy": [
    331686.97860571276,
    4986576.558805018
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -17.87288912005579,
   "start_distance_m": 963.0,
   "end_distance_m": 968.0,
   "midpoint_distance_m": 965.5,
   "start_elevation_m": 524.7210579419387,
   "end_elevation_m": 523.827413485936,
   "start_xy": [
    332412.44712713046,
    4986497.834798267
   ],
   "end_xy": [
    332417.0601943498,
    4986499.728959915
   ]
  },
  "min_10m": {
   "gradient_pct": -11.502692677462392,
   "start_distance_m": 958.0,
   "end_distance_m": 968.0,
   "midpoint_distance_m": 963.0,
   "start_elevation_m": 524.9776827536822,
   "end_elevation_m": 523.827413485936,
   "start_xy": [
    332407.73871919117,
    4986496.152271989
   ],
   "end_xy": [
    332417.0601943498,
    4986499.728959915
   ]
  },
  "min_20m": {
   "gradient_pct": -8.16056645389267,
   "start_distance_m": 862.0,
   "end_distance_m": 882.0,
   "midpoint_distance_m": 872.0,
   "start_elevation_m": 529.1950129066931,
   "end_elevation_m": 527.5628996159146,
   "start_xy": [
    332314.3956531896,
    4986477.009605678
   ],
   "end_xy": [
    332334.3352096366,
    4986477.482222384
   ]
  },
  "min_25m": {
   "gradient_pct": -8.00380758025858,
   "start_distance_m": 859.0,
   "end_distance_m": 884.0,
   "midpoint_distance_m": 871.5,
   "start_elevation_m": 529.4121280792865,
   "end_elevation_m": 527.4111761842219,
   "start_xy": [
    332311.40713296714,
    4986477.243830201
   ],
   "end_xy": [
    332336.3282054468,
    4986477.649457848
   ]
  },
  "min_50m": {
   "gradient_pct": -7.078467062105574,
   "start_distance_m": 856.0,
   "end_distance_m": 906.0,
   "midpoint_distance_m": 881.0,
   "start_elevation_m": 529.5632637131248,
   "end_elevation_m": 526.024030182072,
   "start_xy": [
    332308.4827540924,
    4986477.913164346
   ],
   "end_xy": [
    332357.9496689918,
    4986481.617226015
   ]
  },
  "min_100m": {
   "gradient_pct": -5.9789508225514965,
   "start_distance_m": 1102.0,
   "end_distance_m": 1202.0,
   "midpoint_distance_m": 1152.0,
   "start_elevation_m": 516.8241690832858,
   "end_elevation_m": 510.8452182607343,
   "start_xy": [
    332525.225535023,
    4986577.411123609
   ],
   "end_xy": [
    332608.7724958833,
    4986631.549029696
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 21.991849204181335,
   "start_distance_m": 147.0,
   "end_distance_m": 149.0,
   "midpoint_distance_m": 148.0,
   "start_elevation_m": 481.62135235047674,
   "end_elevation_m": 482.06118933456037,
   "start_xy": [
    331667.14810675883,
    4986541.934804641
   ],
   "end_xy": [
    331668.0126887294,
    4986543.738272971
   ]
  },
  "max_3m": {
   "gradient_pct": 22.15235409881302,
   "start_distance_m": 146.0,
   "end_distance_m": 149.0,
   "midpoint_distance_m": 147.5,
   "start_elevation_m": 481.396618711596,
   "end_elevation_m": 482.06118933456037,
   "start_xy": [
    331666.7158157736,
    4986541.033070476
   ],
   "end_xy": [
    331668.0126887294,
    4986543.738272971
   ]
  }
 },
 "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": 0.128,
   "obstruction_max_height_m": 24.39,
   "flagged_windows_m": []
  },
  "review": [],
  "extent": [
   "may_start_earlier",
   "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:26919",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/nh/USGS_1M_19_x33y499_NH_Umbagog_LiDAR_2016_D16.tif"
  ],
  "calculated_at": "2026-08-24T20:36:40+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": "redo-nh-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, NH_Umbagog_LiDAR_2016_D16 (collected 2016)",
  "elevation_tile_ids": [
   "x33y499"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 14.8% over 200 m (Terrain 50), gain 104.1 m over 3209 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_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://s3-us-west-2.amazonaws.com/usgs-lidar-public/NH_Umbagog_2016",
   "ept_crs": "EPSG:3857",
   "station_coverage": 0.994,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "Atkinson and Gilmanton Academy Grant",
  "county": "New Hampshire"
 }
}