… Europe-wide limit value of 0.5 µg/m³ as annual mean that is valid since 1 January 2005 Air pollution Since 2007 the limit value was not exceeded in Germany, the … Europe-wide limit value of 0.5 µg/m³ as annual mean that is valid since 1 January 2005 … Since 2007 the limit value was not exceeded in Germany, the concentrations …