n | Duration | PM2.5 average | PM2.5 maximum | % Time >25 μg/m3 | % Time >246 μg/m3 | |
---|---|---|---|---|---|---|
Non-smoking | 17 | 24 : 13 (22 : 49–27 : 44) | 4.4 (1–12) | 92 (9–783) | 1.8 (0–11) | 0.06 (0–1) |
Smoking | 17 | 25 : 18 (23 : 58–29 : 41) | 33.3 (1–196) | 253 (9–1182) | 22 (0–98) | 2.9 (0–32) |
All | 34 | 24 : 45 (22 : 49–29 : 41) | 18.8 (1–196) | 172 (9–1182) | 12 (0–98) | 1.5 (0–32) |
Values are arithmetic means with range in brackets. PM2.5 values are in μg/m3.