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 | 1.65 | 1.60 | 4.18 | 2.86 | 3.23 |
| Summer | 83 | 1.58 | 1.65 | 2.99 | 2.50 | 2.86 |
| Winter | 82 | 1.65 | 1.55 | 4.18 | 3.23 | 3.95 |