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Output of multi-linear regression (MLR) analysis between PCA factor scores (independent variables) and extrinsic DTT activity (dependent variable).
| Source | Unstandardized coefficient (± Std. error) |
Standardized coefficient |
P-value | R2 |
|---|---|---|---|---|
| Constant | 0.914 ± 0.048 | 0.000 | 0.79 | |
| Fossil fuel combustion | 0.147 ± 0.049 | 0.329 | 0.007 | |
| Traffic | 0.356 ± 0.047 | 0.795 | 0.000 | |
| Secondary aerosols | 0.097 ± 0.049 | 0.216 | 0.063 |
