Percentage of the EU urban population exposed to SO2 concentrations over the daily average limit value for protection of human health, 2002–2011

Monitoring data from AirBase provide the basis for
estimating the European population's exposure to
exceedances of the SO2 limit value of 125 µg/m3
as a daily average. According to the relevant
directive, this limit value should not to be exceeded
on more than three days in a year and was to be
met by 2005.