Table 4.

Median and 95th percentile of the urinary levels of heavy metals (μg/l) by municipality in Laterza

Values	iAs + MMA + DMA	Cr	Mn	Hg	Pb
Mean	3.2	0.4	6.2	1.1	4.9
SD	2.3	0.4	14.2	0.8	3.4
p5	0.9	0.1	0.6	0.3	1.2
p50 (median)	2.7	0.3	2.2	0.8	4.1*
p95	8.5	1.2*	22.5*	2.4	12.5*
n	45	45	45	45	45
SIVR reference values	2.0–15	0.05–0.35	0.2–4.0	0.1–5.0	0.01–2.0

*Statistically significant