{
 "ocl_version": "0.1.0",
 "name": "Cemetery Road",
 "slug": "cemetery-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 22.48471647309458,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 218.0,
   "end_distance_m": 220.0,
   "start_elevation_m": 132.70229946291047,
   "end_elevation_m": 133.15199379237237,
   "min_gradient_pct": -9.46088503536373
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.33945860491815,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 209.0,
   "end_distance_m": 212.0,
   "start_elevation_m": 130.76195069174852,
   "end_elevation_m": 131.43213444989607,
   "min_gradient_pct": -8.023385563670141
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.941336839677206,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 208.0,
   "end_distance_m": 213.0,
   "start_elevation_m": 130.54939979202388,
   "end_elevation_m": 131.64646663400774,
   "min_gradient_pct": -6.812480224785986
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.747831373421604,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 209.0,
   "end_distance_m": 219.0,
   "start_elevation_m": 130.76195069174852,
   "end_elevation_m": 132.93673382909068,
   "min_gradient_pct": -5.452202047980279
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.31555669265765,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 200.0,
   "end_distance_m": 220.0,
   "start_elevation_m": 128.88888245384084,
   "end_elevation_m": 133.15199379237237,
   "min_gradient_pct": -5.1622098198238575
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.014545493839478,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 198.0,
   "end_distance_m": 223.0,
   "start_elevation_m": 128.4933538420279,
   "end_elevation_m": 133.74699021548776,
   "min_gradient_pct": -4.823389363513002
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.40663356990555,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 185.0,
   "end_distance_m": 235.0,
   "start_elevation_m": 126.15810581330093,
   "end_elevation_m": 135.8614225982537,
   "min_gradient_pct": -4.395733361933992
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.580845925630257,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 176.0,
   "end_distance_m": 276.0,
   "start_elevation_m": 124.85778752484751,
   "end_elevation_m": 141.43863345047777,
   "min_gradient_pct": -3.812355945141519
  }
 ],
 "shape": {
  "ascent_concentration": 0.534,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 138.0,
  "shape_class": "stepped"
 },
 "length_m": 1038.4250168639837,
 "start_elevation_m": 114.80224013796578,
 "end_elevation_m": 170.48504092163097,
 "endpoint_gain_m": 55.682800783665186,
 "overall_gradient_pct": 5.362236067061037,
 "accumulated_ascent_m": 60.99211411929332,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.941336839677206,
   "start_distance_m": 208.0,
   "end_distance_m": 213.0,
   "midpoint_distance_m": 210.5,
   "start_elevation_m": 130.54939979202388,
   "end_elevation_m": 131.64646663400774,
   "start_xy": [
    657353.736701086,
    4582985.238503239
   ],
   "end_xy": [
    657357.9272493285,
    4582982.513499192
   ]
  },
  "max_10m": {
   "gradient_pct": 21.747831373421604,
   "start_distance_m": 209.0,
   "end_distance_m": 219.0,
   "midpoint_distance_m": 214.0,
   "start_elevation_m": 130.76195069174852,
   "end_elevation_m": 132.93673382909068,
   "start_xy": [
    657354.5710995315,
    4582984.687341626
   ],
   "end_xy": [
    657363.4917502457,
    4582980.2693226375
   ]
  },
  "max_20m": {
   "gradient_pct": 21.31555669265765,
   "start_distance_m": 200.0,
   "end_distance_m": 220.0,
   "midpoint_distance_m": 210.0,
   "start_elevation_m": 128.88888245384084,
   "end_elevation_m": 133.15199379237237,
   "start_xy": [
    657348.4762475577,
    4582991.032385445
   ],
   "end_xy": [
    657364.4228734818,
    4582979.90818163
   ]
  },
  "max_25m": {
   "gradient_pct": 21.014545493839478,
   "start_distance_m": 198.0,
   "end_distance_m": 223.0,
   "midpoint_distance_m": 210.5,
   "start_elevation_m": 128.4933538420279,
   "end_elevation_m": 133.74699021548776,
   "start_xy": [
    657347.4515226837,
    4582992.749923857
   ],
   "end_xy": [
    657367.3979622199,
    4582979.53475768
   ]
  },
  "max_50m": {
   "gradient_pct": 19.40663356990555,
   "start_distance_m": 185.0,
   "end_distance_m": 235.0,
   "midpoint_distance_m": 210.0,
   "start_elevation_m": 126.15810581330093,
   "end_elevation_m": 135.8614225982537,
   "start_xy": [
    657340.9231547777,
    4583003.98470145
   ],
   "end_xy": [
    657379.3329847703,
    4582979.349076785
   ]
  },
  "max_100m": {
   "gradient_pct": 16.580845925630257,
   "start_distance_m": 176.0,
   "end_distance_m": 276.0,
   "midpoint_distance_m": 226.0,
   "start_elevation_m": 124.85778752484751,
   "end_elevation_m": 141.43863345047777,
   "start_xy": [
    657337.2140789963,
    4583012.184869016
   ],
   "end_xy": [
    657420.0871200103,
    4582982.73747416
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -6.812480224785986,
   "start_distance_m": 847.0,
   "end_distance_m": 852.0,
   "midpoint_distance_m": 849.5,
   "start_elevation_m": 172.1724041259709,
   "end_elevation_m": 171.8317801147316,
   "start_xy": [
    657963.5575241739,
    4582811.566041813
   ],
   "end_xy": [
    657968.2603644514,
    4582809.868017113
   ]
  },
  "min_10m": {
   "gradient_pct": -5.452202047980279,
   "start_distance_m": 842.0,
   "end_distance_m": 852.0,
   "midpoint_distance_m": 847.0,
   "start_elevation_m": 172.37700031952963,
   "end_elevation_m": 171.8317801147316,
   "start_xy": [
    657958.8549599262,
    4582813.264831695
   ],
   "end_xy": [
    657968.2603644514,
    4582809.868017113
   ]
  },
  "min_20m": {
   "gradient_pct": -5.1622098198238575,
   "start_distance_m": 831.0,
   "end_distance_m": 851.0,
   "midpoint_distance_m": 841.0,
   "start_elevation_m": 172.92219099699201,
   "end_elevation_m": 171.88974903302724,
   "start_xy": [
    657948.5092762535,
    4582817.002049015
   ],
   "end_xy": [
    657967.3195892975,
    4582810.207048064
   ]
  },
  "min_25m": {
   "gradient_pct": -4.823389363513002,
   "start_distance_m": 797.0,
   "end_distance_m": 822.0,
   "midpoint_distance_m": 809.5,
   "start_elevation_m": 174.3102699622357,
   "end_elevation_m": 173.10442262135746,
   "start_xy": [
    657916.5315290337,
    4582828.552957584
   ],
   "end_xy": [
    657940.0446734517,
    4582820.059905347
   ]
  },
  "min_50m": {
   "gradient_pct": -4.395733361933992,
   "start_distance_m": 802.0,
   "end_distance_m": 852.0,
   "midpoint_distance_m": 827.0,
   "start_elevation_m": 174.0296467956986,
   "end_elevation_m": 171.8317801147316,
   "start_xy": [
    657921.2339704602,
    4582826.853827889
   ],
   "end_xy": [
    657968.2603644514,
    4582809.868017113
   ]
  },
  "min_100m": {
   "gradient_pct": -3.812355945141519,
   "start_distance_m": 778.0,
   "end_distance_m": 878.0,
   "midpoint_distance_m": 828.0,
   "start_elevation_m": 174.887371066561,
   "end_elevation_m": 171.07501512141948,
   "start_xy": [
    657898.6616280647,
    4582835.007921765
   ],
   "end_xy": [
    657992.7138943673,
    4582801.0348553825
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 22.48471647309458,
   "start_distance_m": 218.0,
   "end_distance_m": 220.0,
   "midpoint_distance_m": 219.0,
   "start_elevation_m": 132.70229946291047,
   "end_elevation_m": 133.15199379237237,
   "start_xy": [
    657362.5643726853,
    4582980.643449424
   ],
   "end_xy": [
    657364.4228734818,
    4582979.90818163
   ]
  },
  "max_3m": {
   "gradient_pct": 22.33945860491815,
   "start_distance_m": 209.0,
   "end_distance_m": 212.0,
   "midpoint_distance_m": 210.5,
   "start_elevation_m": 130.76195069174852,
   "end_elevation_m": 131.43213444989607,
   "start_xy": [
    657354.5710995315,
    4582984.687341626
   ],
   "end_xy": [
    657357.0759045581,
    4582983.036321627
   ]
  }
 },
 "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": 0.786,
   "obstruction_max_height_m": 28.7,
   "flagged_windows_m": [
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [],
  "suggested_summit_cut_m": 761.0,
  "trailing_descent_m": 4.7
 },
 "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/ct/USGS_1M_18_x65y459_CT_Statewide_C16.tif"
  ],
  "calculated_at": "2026-09-03T13:56:34+00:00",
  "road_source": "/mnt/HC_Volume_106727764/site-corpus-fresh/us/cemetery-road/cemetery-road.geojson",
  "run_id": "canopy-all-260903",
  "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, CT_Statewide_C16 (collected 2016)",
  "elevation_tile_ids": [
   "x65y459"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://usgs-lidar-public.s3-us-west-2.amazonaws.com/USGS_LPC_CT_Sandy_2014_LAS_2015",
   "ept_crs": "EPSG:3857",
   "station_coverage": 0.993,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "Seymour",
  "county": "Connecticut"
 }
}