Table 1.

Descriptive statistics for the concentration values of total mercury (nanogram per gram per dry weight) in virgin styrofoam, styrofoam debris, beach sediment, and moss

	n a	Mean ± SD	Range (ng g−1 d.w.)	Median	Lower quartile	Upper quartile
Virgin styrofoam	22	0.23 ± 0.17	0.03–0.68	0.23	0.07	0.33
Styrofoam debris	214	46.8 ± 299	0.02–3863	5.20	3.16	10.0
Beach sediment	163	0.85 ± 0.59	0.15–4.32	0.69	0.51	0.96
Mosses	111	42.1 ± 23.1	0.21–126	40.0	14.6	69.3

^aNumber of samples analysed