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 | 364 | 13 | 10 | 61 | 30 | 39 |
| Summer | 152 | 15 | 13 | 61 | 35 | 40 |
| Winter | 151 | 10 | 8 | 51 | 21 | 27 |