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 | 362 | 27 | 23 | 113 | 60 | 72 |
| Summer | 152 | 18 | 18 | 37 | 31 | 34 |
| Winter | 150 | 36 | 33 | 113 | 74 | 90 |