Table 7 Before- and after-adjusting co linearity by principal component analysis of different air pollutants GAM model combination on day 0

1.0173

0.9502~1.0844

1.0313

0.9511 ~1.1114

1.0229*

1.0045~1.0413

1.0278*

1.0055 ~1.0501

0.9691

0.8976~1.0405

1.1653*

1.0377 ~1.2929

1.0270*

1.0088~1.0453

1.0501*

1.0167 ~1.0835

0.9970

0.9299 ~1.0641

1.1118*

1.0116 ~1.2120

1.0349*

1.0124 ~1.0574

1.0533*

1.0192 ~1.0874

0.9592

0.8732~1.0452

1.0182

0.9373 ~1.0991

1.1607*

1.0317 ~1.2896

1.0185*

1.0056~1.0313

1.0215*

1.0066 ~1.0365

1.0326*

1.0101 ~1.0552