Model

Abbreviation

a

b

MBE

RMSE

MPE

R²

t-Test

Koronakis (1986)

Kr (ISO)

0.511

0.365

15.6

25.8

19.4

0.978

8.23

Badescu (2002)

Ba (ISO)

0.478

0.376

−17.3

19.7

15.8

0.983

6.64

Tian et al. (2001)

Ti (ISO)

0.396

0.322

−12.6

12.4

12.4

0.992

4.76

Liu and Jordan (1962)

LJ (ISO)

0.572

0.347

−22.4

38.5

16.2

0.974

10.76

Skartveit and Olseth (1986)

SO (ANISO)

0.534

0.353

14.3

15.7

13.6

0.963

5.97

Reindl et al. (1990)

Re (ANISO)

0.421

0.298

11.2

8.3

15.8

0.996

4.21

Klucher (1979)

Kl (ANISO)

0.358

0.432

16.9

16.5

11.5

0.978

7.45

Hay (1979)

Ha (ANISO)

0.519

0.316

−19.3

16.2

18.4

0.953

8.32

Stevenand Unsworth (1980)

SU (ANISO)

0.437

0.456

−11.7

14.8

11.2

0.996

6.57