Monthly average concentrations
Measuring period: April 1994 - March 1995| Period | Nr. of samples | Cavg (ug/m3) | C50
(ug/m3) | Cmax (ug/m3) |
C95 (ug/m3) | C98 (ug/m3) |
| All | 195 | 75 | 73 | 203 | 141 | 173 |
| Summer | 83 | 64 | 66 | 151 | 108 | 130 |
| Winter | 82 | 85 | 78 | 203 | 166 | 199 |