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 | 186 | 0.90 | 0.85 | 2.95 | 1.82 | 2.18 |
| Summer | 76 | 0.77 | 0.77 | 1.70 | 0.97 | 1.60 |
| Winter | 74 | 1.06 | 0.96 | 2.95 | 2.05 | 2.37 |