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 | 363 | 46 | 38 | 221 | 123 | 161 |
| Summer | 153 | 66 | 55 | 221 | 150 | 184 |
| Winter | 150 | 30 | 30 | 87 | 62 | 70 |