Table 3 Parameter estimates and associated standard errors (s.e.) and tests of significance for the models given by Eqs. (1)–(4)

  a

339.9

2.5

135.96

<0.0001

  b

459.2

2.5

183.68

<0.0001

  c

0.1447

0.0092

15.73

<0.0001

  d

2.44

0.29

8.42

<0.0001

  f

0.657

0.088

7.47

<0.0001

  a

579.8

17.7

32.76

<0.0001

  b

−58.61

3.59

−16.33

<0.0001

  c

0.002763

0.000224

12.33

<0.0001

  d

80.17

4.73

16.95

<0.0001

  f

0.1845

0.0260

7.10

<0.0001

  a

390.3

2.2

177.41

<0.0001

  b

−42.30

2.67

−15.84

<0.0001

  c

31.93

4.07

7.85

<0.0001

  d

−293.0

16.6

−17.65

<0.0001

  f

−0.5181

0.0307

−16.88

<0.0001

  a

44.0

13.3

3.31

0.0013

  b

−2.34

1.10

2.13

0.036

  c

0.0467

0.0218

2.14

0.035