Predictor Variables

Model

r²

SE (mm)

Full Equation

$\text{EWP}=0.007L^2+0.234L-0.01d_v$

0.92

±0.87

p < 10⁻⁵

L and d_v

$\text{EWP}=0.423L-0.011d_v$

0.90

±0.97

p < 10⁻⁶

L and L²

$\text{EWP}=0.008L^2+0.203L$

0.89

±1.02

p < 10⁻⁴

Only L

$\text{EWP}=0.405L-1.26$

0.87

±1.12

p < 10⁻⁶