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 | 354 | 17 | 16 | 65 | 34 | 41 |
| Summer | 146 | 17 | 16 | 46 | 34 | 40 |
| Winter | 148 | 18 | 17 | 65 | 37 | 54 |