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 |