Figure 3.
Average PAH concentrations. Modelled concentrations of polycyclic aromatic hydrocarbon (1972–1994) and allocation of postcode area to exposure categories based on the average PAH concentration within the postcode areas.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.