Table 1.
Study subjects
| Subject ID | Exposure group | Outdoor PM2.5 (μg/m3) | Indoor PM2.5 (μg/m3) |
|---|---|---|---|
| 1 | low | 7 | 15 |
| 2 | low | 9 | 17 |
| 3 | high | 22 | 105 |
| 4 | high | 52 | 131 |
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