Source

Sum of squares

Degree of

freedom

Mean square

F value

P value

Significance

Model

644.07

14

46

100.22

<0.0001

**

A

0.25

1

0.25

0.54

0.4732

**

B

19.20

1

19.20

41.83

<0.0001

**

C

0.14

1

0.14

0.30

0.5941

D

32.37

1

32.37

70.53

<0.0001

**

AB

0.017

1

0.017

0.037

0.8506

AC

2.39

1

2.39

5.20

0.0388

*

AD

0.026

1

0.026

0.056

0.8167

BC

2.56

1

2.56

5.58

0.0332

*

BD

5.29

1

5.29

11.52

0.0044

**

CD

0.26

1

0.26

0.56

0.4684

**

A²

106.03

1

106.03

230.99

<0.0001

**

B²

175.52

1

175.52

382.36

<0.0001

**

C²

243.89

1

243.89

531.30

<0.0001

**

D²

350.47

1

350.89

763.49

<0.0001

**

Residual

6.43

14

0.46

Lack of fit

1.58

10

0.16

0.13

0.9957

Pure Error

4.84

4

1.21

Cor total

650.49

28

$R_{adj}^2=0.9802$ R² = 0.9901