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The loading matrix of atmospheric pollutants on three principal components
| Variables | PC1 | PC2 | PC3 |
|---|---|---|---|
| PM2.5 | 0.934 | −0.133 | − 0.251 |
| PM10 | 0.925 | −0.205 | −0.245 |
| SO2 | 0.797 | 0.602 | 0.034 |
| NO2 | 0.829 | −0.200 | 0.523 |
PC1: the first principal component; PC2: the second principal component; PC3: the third principal component
