Table 3.
Observed physic-chemical parameters in ponds, correlation coefficients to V. cholerae O1 and O139 concentrations (Pearson's ρ) and their statistical significance
| Parameter | Median value | Range | ρO1 | PO1 | ρO139 | PO139 |
|---|---|---|---|---|---|---|
| Water temperature (°C) | 29·3 | 27·1−31·8 | −0·2893 | 0·0016 | −0·3425 | 0·0035 |
| Salinity (g/l) | 0·1 | 0−0·2 | 0·4837 | <0·001 | 0·3616 | 0·013 |
| Total dissolved solid (mg/l) | 74·35 | 23·60−240 | 0·5704 | <0·001 | 0·3748 | 0·01 |
| Conductivity (μS/cm) | 159·90 | 50·70−498·00 | 0·5627 | <0·001 | 0·3691 | 0·012 |
| pH | 6·88 | 6·60−7·08 | −0·0360 | 0·81 | −0·1104 | 0·4653 |