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 | 365 | 30 | 28 | 86 | 62 | 72 |
| Summer | 153 | 27 | 26 | 74 | 55 | 62 |
| Winter | 151 | 35 | 33 | 86 | 64 | 74 |