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 | 343 | 40 | 39 | 155 | 86 | 97 |
| Summer | 142 | 34 | 33 | 88 | 74 | 83 |
| Winter | 142 | 51 | 50 | 155 | 100 | 115 |