Predictor Variables

Model

r2

SE (mm)

Full Equation

EWP = 0.007 L 2 + 0.234 L 0.01 d v

0.92

±0.87

p < 10−5

L and dv

EWP = 0.423 L 0.011 d v

0.90

±0.97

p < 10−6

L and L2

EWP = 0.008 L 2 + 0.203 L

0.89

±1.02

p < 10−4

Only L

EWP = 0.405 L 1.26

0.87

±1.12

p < 10−6