| Period | Floor 1 | Floor 2 | Floor 3 | Floor 4 | ||||
| Period average (µg/m3) | Standard deviation (µg/m3) | Period average (µg/m3) | Standard deviation (µg/m3) | Period average (µg/m3) | Standard deviation (µg/m3) | Period average (µg/m3) | Standard deviation (µg/m3) | |
| May | 25.9 | 10.0 | 30.6 | 15.2 | 20.2 | 8.2 | 24.4 | 5.3 |
| June | 20.8 | 5.6 | 25.0 | 5.6 | 25.0 | 5.6 | 25.0 | 5.6 |
| July | 26.5 | 7.2 | 29.0 | 8.4 | 30.3 | 8.4 | 23.3 | 8.4 |
| August | 51.9 | 10.5 | 35.0 | 12.0 | 19.8 | 7.0 | 43.7 | 6.4 |
| September | 46.7 | 17.5 | 46.7 | 12.0 | 18.5 | 4.5 | 53.7 | 4.5 |