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 | 0.0010 | 0.0008 | 0.0100 | 0.0017 | 0.0026 |
| Summer | 76 | 0.0007 | 0.0006 | 0.0021 | 0.0010 | 0.0014 |
| Winter | 74 | 0.0013 | 0.0010 | 0.0100 | 0.0026 | 0.0073 |