A considerable proportion of the urban population in the EU (20-29 % between 2008 and 2010) were exposed to concentrations exceeding the EU target value, which must be met by 2013.
Märkimisväärset hulka ELi linnaelanikke (20–29% aastatel 2008–2010) ohustas kontsentratsioon, mis ületas ELi 2013. aasta sihtväärtust.