6.1
| Averaging period | Limit value | Margin of tolerance | Date by which limit value is to be met | |
|---|---|---|---|---|
| Limit value for the protection of human health | Maximum daily 8-hour mean | 10mg/m3 | 4 mg/m3 reducing on 1st January 2004 to 2 mg/m3, and to 0 mg/m3 on 1st January 2005 | 1st January 2005 |