| Variables | Components | |
| Dim1 | Dim2 | |
| Yellowing index | 0.98 | −0.18 |
| Brown index | 0.99 | −0.073 |
| Clarity | −0.97 | 0.24 |
| Turbidity | 0.59 | −0.80 |
| Eigen value | 3.24 | 0.73 |
| Variance (%) | 81.08 | 18.38 |
| Cumulative variance (%) | 81.08 | 99.46 |