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Breathing zone and in-duct particle number concentrations
| Station | Number of Measurements | Air Flow (m3 min−1) | Breathing Zone | In-Duct | Conc Reduction Factor (%) | ||
|---|---|---|---|---|---|---|---|
| GM (particles cm−3) | GSD | GM (particles cm−3) | GSD | ||||
| 1 | 2440 | 12.3 | 6.03 × 105 | 2.60 | 7.75 × 105 | 2.57 | 56 |
| 2 | 1761 | 11.5 | 2.57 × 106 | 2.44 | 1.45 × 106 | 1.90 | 36 |
| 3 | 2318 | 12.3 | 3.77 × 105 | 1.41 | 2.31 × 105 | 3.30 | 38 |
