Table 1. Correlation coefficients obtained by regressing E. coli and enterococci, and E. coli and environmental variables (N = 38 for enterococci, SPM, weekly and daily rainfall; N = 16 for cumulative rainfall; N = 22 for land NDVI, Sentinel-2 data; N = 19 for water pixels and water level).
| Environmental and microbiological variables | Correlation |
|---|---|
| Enterococci | r = 0.85 **** |
| SPM | r s = 0.66 **** |
| Weekly rainfall Kapore | r s = 0.8 **** |
| Daily rainfall Kapore | r s = 0.64 **** |
| Cumulative rainfall (13/03/2018 to 31/07/2018) | r s = 0.9 **** |
| Number of water pixels | rs = 0.07 |
| Water level | rs = -0.22 |
| Surrounding land NDVI | rs = 0.30 |
| Sentinel-2 NIR | r s = 0.72 **** |
****corresponds to p-values < 0.0001