Table 1. Correlation coefficient between IMF and original data.
| Water quality index | IMF1 | IMF2 | IMF3 |
|---|---|---|---|
| Dissolved oxygen | 0.662 | 0.726 | 0.369 |
| Water temperature | 0.983 | 0.221 | 0.096 |
| Salinity | 0.997 | 0.092 | 0.021 |
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