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Grey correlation degree and its range during 2007~2012.
| Year | 2007 | 2008 | 2009 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| PM | PM0.3 | PM0.5 | PM1.0 | PM0.3 | PM0.5 | PM1.0 | PM0.3 | PM0.5 | PM1.0 |
| Correlation degree | 0.7771 | 0.772 | 0.7595 | 0.7467 | 0.7402 | 0.7425 | 0.8213 | 0.8211 | 0.8068 |
| Correlation range | 1 | 2 | 3 | 1 | 3 | 2 | 1 | 2 | 3 |
| Year | 2010 | 2011 | 2012 | ||||||
| PM | PM0.3 | PM0.5 | PM1.0 | PM0.3 | PM0.5 | PM1.0 | PM0.3 | PM0.5 | PM1.0 |
| Correlation degree | 0.8213 | 0.8099 | 0.7909 | 0.7944 | 0.7825 | 0.7624 | 0.702 | 0.7064 | 0.6949 |
| Correlation range | 1 | 2 | 3 | 1 | 2 | 3 | 2 | 1 | 3 |
