Table 3.
The comparison of water quality in Yancheng and Nantong city with T-test.
| Water quality parameter | Yanhceng | Nantong | p-value |
|---|---|---|---|
| WT (°C) | 18.1 | 19.3 | <2 × 10−16*** |
| pH | 7.78 | 7.92 | <2 × 10−16*** |
| DO (mg/L) | 7.36 | 7.37 | 0.929 |
| EC (μS/cm) | 922 | 1127 | <2 × 10−16*** |
| Tur (NTU) | 51.1 | 37.5 | <2 × 10−16*** |
| COM (mg/L) | 4.62 | 4.26 | <2 × 10−16*** |
| AN (mg/L) | 0.22 | 0.30 | <2 × 10−16*** |
| TP (mg/L) | 0.13 | 0.17 | <2 × 10−16*** |
| TN (mg/L) | 2.39 | 2.32 | 1 × 10−4*** |
| WQI | 60.4 | 61.5 | 3 × 10−11*** |
### The asterisk means significant different existing between the two coastal cities.