Parameter/Trial

1

2

3

K (sandstone), (m/d)

20

34

70

K (clay) (m/d)

0.2

0.2

0.3

Max. residual (m)

5.282

−3.037

−9.476

Min. residual (m)

−0.092

−0.013

−0.009

Residual mean (m)

−1.072

−0.65

−0.332

Absolute residual mean (m)

1.5

0.871

1.042

Standard error of the estimate (m)

0.147

0.077

0.15

Root mean squared (m)

1.894

1.048

1.631

Correlation coefficient

0.920

0.923

0.902