Figure.
City specific risk of death per 50 μg increase in sulphur dioxide/mm3 by mean winter temperature; regression lines were estimated separately for eastern and western European cities
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.