{
 "ocl_version": "0.1.0",
 "name": "State Line Road",
 "slug": "state-line-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 23.470091030263518,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 431.0,
   "end_distance_m": 433.0,
   "start_elevation_m": 229.52692033126775,
   "end_elevation_m": 229.99632215187302,
   "min_gradient_pct": -8.355326663777873
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 23.230521388097713,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 430.0,
   "end_distance_m": 433.0,
   "start_elevation_m": 229.29940651023009,
   "end_elevation_m": 229.99632215187302,
   "min_gradient_pct": -8.332051431296842
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.856142929621797,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 429.0,
   "end_distance_m": 434.0,
   "start_elevation_m": 229.07984193020312,
   "end_elevation_m": 230.2226490766842,
   "min_gradient_pct": -8.313698938044922
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.119432473316465,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 426.0,
   "end_distance_m": 436.0,
   "start_elevation_m": 228.4441997366348,
   "end_elevation_m": 230.65614298396645,
   "min_gradient_pct": -8.230017020483444
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.7518315581286,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 429.0,
   "end_distance_m": 449.0,
   "start_elevation_m": 229.07984193020312,
   "end_elevation_m": 233.43020824182884,
   "min_gradient_pct": -7.971045925912108
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.619820163608665,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 424.0,
   "end_distance_m": 449.0,
   "start_elevation_m": 228.02525320092667,
   "end_elevation_m": 233.43020824182884,
   "min_gradient_pct": -7.818532630391019
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.63206246767919,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 405.0,
   "end_distance_m": 455.0,
   "start_elevation_m": 224.6929910991351,
   "end_elevation_m": 234.5090223329747,
   "min_gradient_pct": -7.202041626378332
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 14.264264392954601,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 383.0,
   "end_distance_m": 483.0,
   "start_elevation_m": 222.31110544635163,
   "end_elevation_m": 236.57536983930623,
   "min_gradient_pct": -5.512819641524999
  }
 ],
 "shape": {
  "ascent_concentration": 0.462,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 78.0,
  "shape_class": "stepped"
 },
 "length_m": 1239.1135669468474,
 "start_elevation_m": 210.28498774354222,
 "end_elevation_m": 237.4695341110832,
 "endpoint_gain_m": 27.184546367540975,
 "overall_gradient_pct": 2.1938704484144407,
 "accumulated_ascent_m": 39.57972139983093,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.856142929621797,
   "start_distance_m": 429.0,
   "end_distance_m": 434.0,
   "midpoint_distance_m": 431.5,
   "start_elevation_m": 229.07984193020312,
   "end_elevation_m": 230.2226490766842,
   "start_xy": [
    622278.2775140208,
    4589467.060707514
   ],
   "end_xy": [
    622277.8925025811,
    4589462.075552934
   ]
  },
  "max_10m": {
   "gradient_pct": 22.119432473316465,
   "start_distance_m": 426.0,
   "end_distance_m": 436.0,
   "midpoint_distance_m": 431.0,
   "start_elevation_m": 228.4441997366348,
   "end_elevation_m": 230.65614298396645,
   "start_xy": [
    622278.508521182,
    4589470.05180024
   ],
   "end_xy": [
    622277.7385740848,
    4589460.081485229
   ]
  },
  "max_20m": {
   "gradient_pct": 21.7518315581286,
   "start_distance_m": 429.0,
   "end_distance_m": 449.0,
   "midpoint_distance_m": 439.0,
   "start_elevation_m": 229.07984193020312,
   "end_elevation_m": 233.43020824182884,
   "start_xy": [
    622278.2775140208,
    4589467.060707514
   ],
   "end_xy": [
    622276.7385431372,
    4589447.120006682
   ]
  },
  "max_25m": {
   "gradient_pct": 21.619820163608665,
   "start_distance_m": 424.0,
   "end_distance_m": 449.0,
   "midpoint_distance_m": 436.5,
   "start_elevation_m": 228.02525320092667,
   "end_elevation_m": 233.43020824182884,
   "start_xy": [
    622278.6615318473,
    4589472.045938334
   ],
   "end_xy": [
    622276.7385431372,
    4589447.120006682
   ]
  },
  "max_50m": {
   "gradient_pct": 19.63206246767919,
   "start_distance_m": 405.0,
   "end_distance_m": 455.0,
   "midpoint_distance_m": 430.0,
   "start_elevation_m": 224.6929910991351,
   "end_elevation_m": 234.5090223329747,
   "start_xy": [
    622280.1235063195,
    4589490.9896078
   ],
   "end_xy": [
    622276.2775169476,
    4589441.137745412
   ]
  },
  "max_100m": {
   "gradient_pct": 14.264264392954601,
   "start_distance_m": 383.0,
   "end_distance_m": 483.0,
   "midpoint_distance_m": 433.0,
   "start_elevation_m": 222.31110544635163,
   "end_elevation_m": 236.57536983930623,
   "start_xy": [
    622280.5822862688,
    4589512.909340642
   ],
   "end_xy": [
    622273.2471705172,
    4589413.309410589
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -8.313698938044922,
   "start_distance_m": 532.0,
   "end_distance_m": 537.0,
   "midpoint_distance_m": 534.5,
   "start_elevation_m": 236.95549840955542,
   "end_elevation_m": 236.53981346265317,
   "start_xy": [
    622267.2352206726,
    4589364.679656785
   ],
   "end_xy": [
    622266.6262474174,
    4589359.71688064
   ]
  },
  "min_10m": {
   "gradient_pct": -8.230017020483444,
   "start_distance_m": 531.0,
   "end_distance_m": 541.0,
   "midpoint_distance_m": 536.0,
   "start_elevation_m": 237.03848191266812,
   "end_elevation_m": 236.21548021061977,
   "start_xy": [
    622267.3572841212,
    4589365.672179084
   ],
   "end_xy": [
    622266.1382335926,
    4589355.746761946
   ]
  },
  "min_20m": {
   "gradient_pct": -7.971045925912108,
   "start_distance_m": 528.0,
   "end_distance_m": 548.0,
   "midpoint_distance_m": 538.0,
   "start_elevation_m": 237.26776110595137,
   "end_elevation_m": 235.67355192076894,
   "start_xy": [
    622267.7232352439,
    4589368.649775388
   ],
   "end_xy": [
    622265.2842678822,
    4589348.799047042
   ]
  },
  "min_25m": {
   "gradient_pct": -7.818532630391019,
   "start_distance_m": 529.0,
   "end_distance_m": 554.0,
   "midpoint_distance_m": 541.5,
   "start_elevation_m": 237.19232872478622,
   "end_elevation_m": 235.23769556718847,
   "start_xy": [
    622267.6012914142,
    4589367.657238385
   ],
   "end_xy": [
    622264.5522460032,
    4589342.84386914
   ]
  },
  "min_50m": {
   "gradient_pct": -7.202041626378332,
   "start_distance_m": 525.0,
   "end_distance_m": 575.0,
   "midpoint_distance_m": 550.0,
   "start_elevation_m": 237.45948478860083,
   "end_elevation_m": 233.85846397541167,
   "start_xy": [
    622268.0891856565,
    4589371.627371778
   ],
   "end_xy": [
    622261.9902307668,
    4589322.000738947
   ]
  },
  "min_100m": {
   "gradient_pct": -5.512819641524999,
   "start_distance_m": 520.0,
   "end_distance_m": 620.0,
   "midpoint_distance_m": 570.0,
   "start_elevation_m": 237.6750902217005,
   "end_elevation_m": 232.1622705801755,
   "start_xy": [
    622268.6992636565,
    4589376.590012683
   ],
   "end_xy": [
    622256.2952480162,
    4589277.373078965
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 23.470091030263518,
   "start_distance_m": 431.0,
   "end_distance_m": 433.0,
   "midpoint_distance_m": 432.0,
   "start_elevation_m": 229.52692033126775,
   "end_elevation_m": 229.99632215187302,
   "start_xy": [
    622278.1235092464,
    4589465.066645698
   ],
   "end_xy": [
    622277.9695044722,
    4589463.072583881
   ]
  },
  "max_3m": {
   "gradient_pct": 23.230521388097713,
   "start_distance_m": 430.0,
   "end_distance_m": 433.0,
   "midpoint_distance_m": 431.5,
   "start_elevation_m": 229.29940651023009,
   "end_elevation_m": 229.99632215187302,
   "start_xy": [
    622278.2005116335,
    4589466.063676606
   ],
   "end_xy": [
    622277.9695044722,
    4589463.072583881
   ]
  }
 },
 "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": 0.436,
   "obstruction_max_height_m": 29.48,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "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:26918",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/ct/USGS_1M_18_x62y459_CT_Statewide_C16.tif"
  ],
  "calculated_at": "2026-09-03T21:11:52+00:00",
  "road_source": "/mnt/HC_Volume_106727764/site-corpus-fresh/us/state-line-road/state-line-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": [
   "x62y459"
  ],
  "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": 1.0,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "New Fairfield",
  "county": "Connecticut"
 }
}