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 | 27 | 25 | 109 | 50 | 66 |
| Summer | 151 | 28 | 27 | 67 | 48 | 54 |
| Winter | 151 | 28 | 25 | 109 | 58 | 70 |