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 | 307 | 27 | 18 | 229 | 68 | 92 |
| Summer | 119 | 12 | 10 | 36 | 24 | 28 |
| Winter | 131 | 43 | 37 | 229 | 92 | 115 |