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. 2023 Jul 24;17(7):e0010840. doi: 10.1371/journal.pntd.0010840

Table 2. Descriptive statistics of environmental covariates within 20 m buffers of surveyed household locations in American Samoa in 2016.

Variable Mean Median Standard deviation Minimum Maximum
Population density (people/m 2 ) 2.47 2.26 2.06 0.01 12.53
Elevation (m) 77.72 43.96 92.99 0 479.86
Distance to the coastline (m) 1081.97 644.25 1117.78 3.06 4371.57
Distance to streams (m) 358.25 151.12 434.39 0.32 1825.00
Average annual rainfall (mm) 3469.69 3374.57 698.28 2095.10 4630.68
Rainfall in the driest month—August (mm) 232.46 232.97 51.99 125.27 324.61
Rainfall in the wettest month—December (mm) 381.14 369.73 60.28 255.96 528.90
Land cover
 Cropland (%) 0.01 0 0.03 0 0.91
 Rangeland (%) 0.85 0 6.83 0 0.99
 Tree coverage (%) 5.14 0 19.93 0 99.00
 Urban (%) 76.36 100 34.38 0 100.00