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Total exposure and concentrations before (2017–19) and during the lockdown period (2020).
| MEs | 2017–19 |
2020 |
||
|---|---|---|---|---|
| NO2 (μg/m3) | PM2.5 (μg/m3) | NO2 (μg/m3) | PM2.5 (μg/m3) | |
| Outdoor | 45.1 | 18.2 | 26.7 | 15.7 |
| Transportation | 37.4 | 15.1 | 22.1 | 13.1 |
| Work | 28.9 | 10.9 | 17.1 | 9.4 |
| Home | 11.9 | 9.9 | 7 | 8.6 |
| Total Exposure concentration | 16.2 | 10.3 | 7.7 | 8.7 |
