| Location | Characteristics of cold season hourly PM2.5 concentrations | |||
| Overall (µg∙m−3) | No SBI (µg∙m−3) | During SBI (µg∙m−3) | ||
| Beaver 2018 | 11.1 ± 10.7 | 11.5 ± 11.4 | 7.9 ± 10.0 | |
| Chalkyitsik 2017 | 8.6 ± 1.3 | 7.4 ± 0.7 | 9.8 ± 0.6 | |
| Chalkyitsik 2018 | 9.6 ± 17.1 | 9.5 ± 22.0 | 9.7 ± 10.3 | |
| Circle 2017 | 3.2 ± 0.9 | 2.6 ± 0.5 | 4.0 ± 0.7 | |
| Circle 2018 | 3.7 ± 1.2 | 2.7 ± 0.6 | 4.6 ± 0.6 | |