{
 "ocl_version": "0.1.0",
 "name": "Blackberry Road",
 "slug": "blackberry-road-2",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 21.58311317879935,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 635.0,
   "end_distance_m": 637.0,
   "start_elevation_m": 178.66174106117833,
   "end_elevation_m": 179.09340332475432,
   "min_gradient_pct": -3.7748475848360385
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.51973666571223,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 634.0,
   "end_distance_m": 637.0,
   "start_elevation_m": 178.44781122478295,
   "end_elevation_m": 179.09340332475432,
   "min_gradient_pct": -3.6101315278974275
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.12662046101491,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 631.0,
   "end_distance_m": 636.0,
   "start_elevation_m": 177.82260493213806,
   "end_elevation_m": 178.8789359551888,
   "min_gradient_pct": -3.6377685956836103
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.819106564048298,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 631.0,
   "end_distance_m": 641.0,
   "start_elevation_m": 177.82260493213806,
   "end_elevation_m": 179.9045155885429,
   "min_gradient_pct": -3.3471638467628395
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.3642037828115,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 621.0,
   "end_distance_m": 641.0,
   "start_elevation_m": 175.8316748319806,
   "end_elevation_m": 179.9045155885429,
   "min_gradient_pct": -2.924363078724639
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.323515971893357,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 617.0,
   "end_distance_m": 642.0,
   "start_elevation_m": 175.0268532632829,
   "end_elevation_m": 180.10773225625624,
   "min_gradient_pct": -2.7985377360907933
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.59247176342626,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 594.0,
   "end_distance_m": 644.0,
   "start_elevation_m": 170.69558104159222,
   "end_elevation_m": 180.49181692330535,
   "min_gradient_pct": -1.7966702128101133
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.803608304070565,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 547.0,
   "end_distance_m": 647.0,
   "start_elevation_m": 164.16704330104412,
   "end_elevation_m": 180.97065160511468,
   "min_gradient_pct": -0.6879874258977452
  }
 ],
 "shape": {
  "ascent_concentration": 0.51,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 114.0,
  "shape_class": "stepped"
 },
 "length_m": 740.8683315632587,
 "start_elevation_m": 141.28102942657551,
 "end_elevation_m": 189.21344063918093,
 "endpoint_gain_m": 47.932411212605416,
 "overall_gradient_pct": 6.469761112810196,
 "accumulated_ascent_m": 48.94469772329228,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.12662046101491,
   "start_distance_m": 631.0,
   "end_distance_m": 636.0,
   "midpoint_distance_m": 633.5,
   "start_elevation_m": 177.82260493213806,
   "end_elevation_m": 178.8789359551888,
   "start_xy": [
    629427.5826121089,
    4588052.595763795
   ],
   "end_xy": [
    629423.1800882939,
    4588050.225577584
   ]
  },
  "max_10m": {
   "gradient_pct": 20.819106564048298,
   "start_distance_m": 631.0,
   "end_distance_m": 641.0,
   "midpoint_distance_m": 636.0,
   "start_elevation_m": 177.82260493213806,
   "end_elevation_m": 179.9045155885429,
   "start_xy": [
    629427.5826121089,
    4588052.595763795
   ],
   "end_xy": [
    629418.7774197649,
    4588047.855660192
   ]
  },
  "max_20m": {
   "gradient_pct": 20.3642037828115,
   "start_distance_m": 621.0,
   "end_distance_m": 641.0,
   "midpoint_distance_m": 631.0,
   "start_elevation_m": 175.8316748319806,
   "end_elevation_m": 179.9045155885429,
   "start_xy": [
    629436.3879891767,
    4588057.335524256
   ],
   "end_xy": [
    629418.7774197649,
    4588047.855660192
   ]
  },
  "max_25m": {
   "gradient_pct": 20.323515971893357,
   "start_distance_m": 617.0,
   "end_distance_m": 642.0,
   "midpoint_distance_m": 629.5,
   "start_elevation_m": 175.0268532632829,
   "end_elevation_m": 180.10773225625624,
   "start_xy": [
    629439.910066134,
    4588059.231565661
   ],
   "end_xy": [
    629417.896972858,
    4588047.381515476
   ]
  },
  "max_50m": {
   "gradient_pct": 19.59247176342626,
   "start_distance_m": 594.0,
   "end_distance_m": 644.0,
   "midpoint_distance_m": 619.0,
   "start_elevation_m": 170.69558104159222,
   "end_elevation_m": 180.49181692330535,
   "start_xy": [
    629460.1625777552,
    4588070.132745291
   ],
   "end_xy": [
    629416.1357496694,
    4588046.433837891
   ]
  },
  "max_100m": {
   "gradient_pct": 16.803608304070565,
   "start_distance_m": 547.0,
   "end_distance_m": 647.0,
   "midpoint_distance_m": 597.0,
   "start_elevation_m": 164.16704330104412,
   "end_elevation_m": 180.97065160511468,
   "start_xy": [
    629504.9339948555,
    4588075.277289636
   ],
   "end_xy": [
    629413.9758070232,
    4588044.734094686
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -3.6377685956836103,
   "start_distance_m": 488.0,
   "end_distance_m": 493.0,
   "midpoint_distance_m": 490.5,
   "start_elevation_m": 163.23051425235826,
   "end_elevation_m": 163.04862582257408,
   "start_xy": [
    629552.2932470179,
    4588042.500992201
   ],
   "end_xy": [
    629549.1229889744,
    4588046.367445637
   ]
  },
  "min_10m": {
   "gradient_pct": -3.3471638467628395,
   "start_distance_m": 486.0,
   "end_distance_m": 496.0,
   "midpoint_distance_m": 491.0,
   "start_elevation_m": 163.28902929232768,
   "end_elevation_m": 162.9543129076514,
   "start_xy": [
    629553.5611511517,
    4588040.954247648
   ],
   "end_xy": [
    629547.220921397,
    4588048.687389212
   ]
  },
  "min_20m": {
   "gradient_pct": -2.924363078724639,
   "start_distance_m": 483.0,
   "end_distance_m": 503.0,
   "midpoint_distance_m": 493.0,
   "start_elevation_m": 163.36510365310548,
   "end_elevation_m": 162.78023103736055,
   "start_xy": [
    629555.4641707934,
    4588038.635085137
   ],
   "end_xy": [
    629542.7821614468,
    4588054.100096532
   ]
  },
  "min_25m": {
   "gradient_pct": -2.7985377360907933,
   "start_distance_m": 478.0,
   "end_distance_m": 503.0,
   "midpoint_distance_m": 490.5,
   "start_elevation_m": 163.47986547138325,
   "end_elevation_m": 162.78023103736055,
   "start_xy": [
    629558.6147428146,
    4588034.752941369
   ],
   "end_xy": [
    629542.7821614468,
    4588054.100096532
   ]
  },
  "min_50m": {
   "gradient_pct": -1.7966702128101133,
   "start_distance_m": 457.0,
   "end_distance_m": 507.0,
   "midpoint_distance_m": 482.0,
   "start_elevation_m": 163.63075597456665,
   "end_elevation_m": 162.7324208681616,
   "start_xy": [
    629570.4820158057,
    4588017.427870726
   ],
   "end_xy": [
    629539.9427679975,
    4588056.876858561
   ]
  },
  "min_100m": {
   "gradient_pct": -0.6879874258977452,
   "start_distance_m": 417.0,
   "end_distance_m": 517.0,
   "midpoint_distance_m": 467.0,
   "start_elevation_m": 163.54526297805347,
   "end_elevation_m": 162.85727555215573,
   "start_xy": [
    629593.0734792191,
    4587984.418394759
   ],
   "end_xy": [
    629531.6945851617,
    4588062.530835616
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 21.58311317879935,
   "start_distance_m": 635.0,
   "end_distance_m": 637.0,
   "midpoint_distance_m": 636.0,
   "start_elevation_m": 178.66174106117833,
   "end_elevation_m": 179.09340332475432,
   "start_xy": [
    629424.0605351714,
    4588050.699722353
   ],
   "end_xy": [
    629422.2994967025,
    4588049.751701633
   ]
  },
  "max_3m": {
   "gradient_pct": 21.51973666571223,
   "start_distance_m": 634.0,
   "end_distance_m": 637.0,
   "midpoint_distance_m": 635.5,
   "start_elevation_m": 178.44781122478295,
   "end_elevation_m": 179.09340332475432,
   "start_xy": [
    629424.9411267722,
    4588051.173598287
   ],
   "end_xy": [
    629422.2994967025,
    4588049.751701633
   ]
  }
 },
 "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": 0.291,
   "obstruction_max_height_m": 26.33,
   "flagged_windows_m": [
    100
   ]
  },
  "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:26918",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/ct/USGS_1M_18_x62y459_CT_Statewide_C16.tif"
  ],
  "calculated_at": "2026-09-03T13:02:08+00:00",
  "road_source": "/mnt/HC_Volume_106727764/site-corpus-fresh/us/blackberry-road-2/blackberry-road-2.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": "Danbury",
  "county": "Connecticut"
 }
}