{
 "ocl_version": "0.1.0",
 "name": "Crane Road",
 "slug": "crane-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 24.697494614525795,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 793.0,
   "end_distance_m": 795.0,
   "start_elevation_m": 582.4072918252247,
   "end_elevation_m": 582.9012417175152,
   "min_gradient_pct": -34.48587732603983,
   "suppressed_max_gradient_pct": 48.96132264746029,
   "suppressed_location_m": [
    273.0,
    275.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 23.78614172877936,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 793.0,
   "end_distance_m": 796.0,
   "start_elevation_m": 582.4072918252247,
   "end_elevation_m": 583.120876077088,
   "min_gradient_pct": -29.03001194672849,
   "suppressed_max_gradient_pct": 42.47476806026119,
   "suppressed_location_m": [
    273.0,
    276.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.30359468020879,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 792.0,
   "end_distance_m": 797.0,
   "start_elevation_m": 582.1992071583795,
   "end_elevation_m": 583.31438689239,
   "min_gradient_pct": -16.719694657849686,
   "suppressed_max_gradient_pct": 33.53163228689709,
   "suppressed_location_m": [
    272.0,
    277.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.545422463128716,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 791.0,
   "end_distance_m": 801.0,
   "start_elevation_m": 582.0094702219791,
   "end_elevation_m": 584.164012468292,
   "min_gradient_pct": -3.055586507140333,
   "suppressed_max_gradient_pct": 29.13398406827355,
   "suppressed_location_m": [
    289.0,
    299.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.240103693818696,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 782.0,
   "end_distance_m": 802.0,
   "start_elevation_m": 580.2940872500017,
   "end_elevation_m": 584.3421079887654,
   "min_gradient_pct": -0.294915080940541,
   "suppressed_max_gradient_pct": 25.480236216668573,
   "suppressed_location_m": [
    288.0,
    308.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 19.51670547026424,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 778.0,
   "end_distance_m": 803.0,
   "start_elevation_m": 579.6240280549944,
   "end_elevation_m": 584.5032044225604,
   "min_gradient_pct": 0.4108781287034162,
   "suppressed_max_gradient_pct": 22.759935636247974,
   "suppressed_location_m": [
    286.0,
    311.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.414491871191103,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 758.0,
   "end_distance_m": 808.0,
   "start_elevation_m": 576.5599166881351,
   "end_elevation_m": 585.2671626237307,
   "min_gradient_pct": 1.7325392026712052
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.48094980669498,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 718.0,
   "end_distance_m": 818.0,
   "start_elevation_m": 571.0473764309833,
   "end_elevation_m": 586.5283262376782,
   "min_gradient_pct": 3.422719649154942
  }
 ],
 "shape": {
  "ascent_concentration": 0.339,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 198.0,
  "shape_class": "sustained"
 },
 "length_m": 1191.8289674737382,
 "start_elevation_m": 494.0220525085501,
 "end_elevation_m": 612.9674417830827,
 "endpoint_gain_m": 118.9453892745326,
 "overall_gradient_pct": 9.980072017099513,
 "accumulated_ascent_m": 120.21485114075585,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.30359468020879,
   "start_distance_m": 792.0,
   "end_distance_m": 797.0,
   "midpoint_distance_m": 794.5,
   "start_elevation_m": 582.1992071583795,
   "end_elevation_m": 583.31438689239,
   "start_xy": [
    657634.6182405043,
    4705564.600760884
   ],
   "end_xy": [
    657639.5371270766,
    4705563.703793957
   ]
  },
  "max_10m": {
   "gradient_pct": 21.545422463128716,
   "start_distance_m": 791.0,
   "end_distance_m": 801.0,
   "midpoint_distance_m": 796.0,
   "start_elevation_m": 582.0094702219791,
   "end_elevation_m": 584.164012468292,
   "start_xy": [
    657633.634388792,
    4705564.779746347
   ],
   "end_xy": [
    657643.4723341038,
    4705562.986756296
   ]
  },
  "max_20m": {
   "gradient_pct": 20.240103693818696,
   "start_distance_m": 782.0,
   "end_distance_m": 802.0,
   "midpoint_distance_m": 792.0,
   "start_elevation_m": 580.2940872500017,
   "end_elevation_m": 584.3421079887654,
   "start_xy": [
    657624.7802953564,
    4705566.393750849
   ],
   "end_xy": [
    657644.4561858258,
    4705562.8077708855
   ]
  },
  "max_25m": {
   "gradient_pct": 19.51670547026424,
   "start_distance_m": 778.0,
   "end_distance_m": 803.0,
   "midpoint_distance_m": 790.5,
   "start_elevation_m": 579.6240280549944,
   "end_elevation_m": 584.5032044225604,
   "start_xy": [
    657620.9252977354,
    4705567.455996494
   ],
   "end_xy": [
    657645.4398649742,
    4705562.62783944
   ]
  },
  "max_50m": {
   "gradient_pct": 17.414491871191103,
   "start_distance_m": 758.0,
   "end_distance_m": 808.0,
   "midpoint_distance_m": 783.0,
   "start_elevation_m": 576.5599166881351,
   "end_elevation_m": 585.2671626237307,
   "start_xy": [
    657601.7249510156,
    4705573.054805954
   ],
   "end_xy": [
    657650.3589259081,
    4705561.731828344
   ]
  },
  "max_100m": {
   "gradient_pct": 15.48094980669498,
   "start_distance_m": 718.0,
   "end_distance_m": 818.0,
   "midpoint_distance_m": 768.0,
   "start_elevation_m": 571.0473764309833,
   "end_elevation_m": 586.5283262376782,
   "start_xy": [
    657565.6011306931,
    4705590.2219255585
   ],
   "end_xy": [
    657660.166704662,
    4705559.801563816
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -16.719694657849686,
   "start_distance_m": 267.0,
   "end_distance_m": 272.0,
   "midpoint_distance_m": 269.5,
   "start_elevation_m": 514.5554340641968,
   "end_elevation_m": 513.7194493313043,
   "start_xy": [
    657178.7758627605,
    4705819.1161593655
   ],
   "end_xy": [
    657182.6362160154,
    4705815.949614431
   ]
  },
  "min_10m": {
   "gradient_pct": -3.055586507140333,
   "start_distance_m": 262.0,
   "end_distance_m": 272.0,
   "midpoint_distance_m": 267.0,
   "start_elevation_m": 514.0250079820183,
   "end_elevation_m": 513.7194493313043,
   "start_xy": [
    657174.5541162373,
    4705821.795123001
   ],
   "end_xy": [
    657182.6362160154,
    4705815.949614431
   ]
  },
  "min_20m": {
   "gradient_pct": -0.294915080940541,
   "start_distance_m": 185.0,
   "end_distance_m": 205.0,
   "midpoint_distance_m": 195.0,
   "start_elevation_m": 511.00825142451635,
   "end_elevation_m": 510.94926840832824,
   "start_xy": [
    657105.1814954813,
    4705854.4275078215
   ],
   "end_xy": [
    657124.1522015757,
    4705848.096686923
   ]
  },
  "min_25m": {
   "gradient_pct": 0.4108781287034162,
   "start_distance_m": 189.0,
   "end_distance_m": 214.0,
   "midpoint_distance_m": 201.5,
   "start_elevation_m": 511.1169968345332,
   "end_elevation_m": 511.21971636670906,
   "start_xy": [
    657108.9782248603,
    4705853.168602101
   ],
   "end_xy": [
    657132.3738234252,
    4705844.435413227
   ]
  },
  "min_50m": {
   "gradient_pct": 1.7325392026712052,
   "start_distance_m": 180.0,
   "end_distance_m": 230.0,
   "midpoint_distance_m": 205.0,
   "start_elevation_m": 510.76726118033616,
   "end_elevation_m": 511.63353078167177,
   "start_xy": [
    657100.5342459512,
    4705856.221654524
   ],
   "end_xy": [
    657146.9905120742,
    4705837.92754281
   ]
  },
  "min_100m": {
   "gradient_pct": 3.422719649154942,
   "start_distance_m": 172.0,
   "end_distance_m": 272.0,
   "midpoint_distance_m": 222.0,
   "start_elevation_m": 510.29672968214936,
   "end_elevation_m": 513.7194493313043,
   "start_xy": [
    657093.6731551001,
    4705860.335704928
   ],
   "end_xy": [
    657182.6362160154,
    4705815.949614431
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 24.697494614525795,
   "start_distance_m": 793.0,
   "end_distance_m": 795.0,
   "midpoint_distance_m": 794.0,
   "start_elevation_m": 582.4072918252247,
   "end_elevation_m": 582.9012417175152,
   "start_xy": [
    657635.6019200494,
    4705564.420831617
   ],
   "end_xy": [
    657637.5695958192,
    4705564.062708688
   ]
  },
  "max_3m": {
   "gradient_pct": 23.78614172877936,
   "start_distance_m": 793.0,
   "end_distance_m": 796.0,
   "midpoint_distance_m": 794.5,
   "start_elevation_m": 582.4072918252247,
   "end_elevation_m": 583.120876077088,
   "start_xy": [
    657635.6019200494,
    4705564.420831617
   ],
   "end_xy": [
    657638.5534474943,
    4705563.88372302
   ]
  }
 },
 "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": {
  "texture_suppression": {
   "masked_fraction": 0.034,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 286.0,
     "end_m": 311.0,
     "raw_pct": 22.76,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 288.0,
     "end_m": 308.0,
     "raw_pct": 25.48,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 289.0,
     "end_m": 299.0,
     "raw_pct": 29.13,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 272.0,
     "end_m": 277.0,
     "raw_pct": 33.53,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.729,
   "obstruction_max_height_m": 28.62,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    270.0,
    279.0
   ],
   [
    284.0,
    313.0
   ]
  ],
  "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:26918",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/ma/USGS_1M_18_x65y471_MA_Western_B24.tif"
  ],
  "calculated_at": "2026-09-12T00:45:00+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/texture-us-ma/batch-usa-rchunk02.pbf",
  "osm_snapshot": "",
  "run_id": "texture-us-ma-260911",
  "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, MA_Western_B24 (collected 2023-24)",
  "elevation_tile_ids": [
   "x65y471"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://usgs-lidar-public.s3-us-west-2.amazonaws.com/USGS_LPC_MA_ME_MA_QL2_UTM18_L1_2015_LAS_2018",
   "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"
 },
 "area": {
  "place": "Windsor",
  "county": "Massachusetts"
 }
}