From: Effects of indoor air pollution on respiratory symptoms of non-smoking women in Niš, SerbiaEffetti dell'inquinamento nell’aria di ambienti confinati sui sintomi respiratori di donne non fumatrici residenti a Niš, Serbia
Pollutants
Mean concentrations (μg/m3)
2004
2005
2006
2007
2008
SO2
10.01
10.32
8.34
2.22
4.05
BS
1.22
0.98
0.87
0.76
0.45
5-year mean concentrations (μg/m3)
6.98
0.85