Table 2.

Estimated percentiles of the urinary polycyclic aromatic hydrocarbon metabolites (ng/g creatinine).

Metabolite	5th percentile	25th percentile	50th percentile	75th percentile	95th percentile
1-Hydroxypyrene	60	128	201	312	652
2-Hydroxyfluorene	92	188	310	705	2052
1-Hydroxyphenanthrene	40	78	121	193	381
2-Naphthol	543	1328	2802	7394	20,636