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 | 195 | 0.08 | 0.07 | 0.30 | 0.16 | 0.20 |
| Summer | 83 | 0.06 | 0.05 | 0.12 | 0.10 | 0.12 |
| Winter | 82 | 0.10 | 0.09 | 0.30 | 0.20 | 0.23 |