Source

Sum of squares

dfa

Mean square

F valueb

p-value (Prob. > F)c

Remark

TOCremoval model

1064.8

14

76.057

287.69

<0.0001

Significant

X1

590.24

1

590.24

2232.6

<0.0001

Significant

X2

8.3308

1

8.3308

31.512

<0.0001

Significant

X3

19.911

1

19.911

75.313

<0.0001

Significant

X4

79.061

1

79.061

299.05

<0.0001

Significant

X1X2

3.5721

1

3.5721

13.512

0.0022

Significant

X1X3

25.402

1

25.402

96.083

<0.0001

Significant

X1X4

1.5006

1

1.5006

5.6762

0.0309

Significant

X2X3

10.726

1

10.726

40.570

<0.0001

Significant

X2X4

1.6900

1

1.6900

6.3925

0.0232

Significant

X3X4

160.78

1

160.78

608.17

<0.0001

Significant

23.766

1

23.766

89.894

<0.0001

Significant

0.0088

1

0.0088

0.0333

0.8576

Not significant

30.989

1

30.989

117.22

<0.0001

Significant

96.729

1

96.729

365.88

<0.0001

Significant

Residual

3.9656

15

0.2644

Lack of Fit

2.5139

10

0.2514

0.86581

0.6059

Not significant

Pure error

1.4517

5

0.2903

Corrected total SSd

1068.8

29

R2

0.9963

Adjusted R2

0.9928

Adequate Precision

77.489

H2O2,residual model

1.3975

14

0.0998

116.90

<0.0001

Significant

X1

0.0045

1

0.0045

5.3139

0.0359

Significant

X2

0.6970

1

0.6970

816.27

<0.0001

Significant

X3

0.2109

1

0.2109

247.03

<0.0001

Significant

X4

0.0630

1

0.0630

73.824

<0.0001

Significant

X1X2

0.0068

1

0.0068

7.9709

0.0128

Significant

X1X3

0.0163

1

0.0163

19.038

0.0006

Significant

X1X4

0.1208

1

0.1208

141.42

<0.0001

Significant

X2X3

0.0060

1

0.0060

7.0340

0.0181

Significant

X2X4

0.1243

1

0.1243

145.52

<0.0001

Significant

X3X4

0.0218

1

0.0218

25.479

0.0001

Significant

0.0729

1

0.0729

85.402

<0.0001

Significant

0.0026

1

0.0026

3.0146

0.1030

Not significant

0.0273

1

0.0273

32.000

<0.0001

Significant

0.0392

1

0.0392

45.927

<0.0001

Significant

Residual

0.0128

15

0.0009

Lack of Fit

0.0110

10

0.0011

3.0579

0.1145

Not significant

Pure error

0.0018

5

0.0004

Corrected total SSd

1.4103

29

R2

0.9909

Adjusted R2

0.9824

Adequate Precision

51.542