Table 1:
Error statistics of the training data sets.
Regression equation
Data points
Correlation coefficients
Root mean square error (mm/h)
Nonlinear equation using SI (
3
)
5764
0.762
2.061
Nonlinear equation using PCT (
4
)
5764
0.786
1.952
Nonlinear equation using SI and PCT (
5
)
5764
0.842
1.764