Table 7 Results of ANOVA tests ANCOVA tests based on winter data

Analysis of Variance Table Road Sect. 1 (EB1)

Model

Residual Df

RSS

Df

Sum of Square

F

P-value

Simple

20

0.610

Main effect

19

0.602

1

0.008

0.2954

0.595

Interaction effect

15

0.381

4

0.272

2.176

0.121

Analysis of Variance Table Road Sect. 1 (EB2)

Model

Residual Df

RSS

Df

Sum of Square

F

P-value

Simple

20

0.670

Main effect

19

0.624

1

0.047

1.872

0.191

Interaction effect

15

0.374

4

0.249

2.498

0.087

Analysis of Variance Table Road Sect. 2 (NB1)

Model

Residual Df

RSS

Df

Sum of Square

F

P-value

Simple

20

0.850

Main effect

19

0.776

1

0.074

2.106

0.167

Interaction effect

15

0.530

4

0.245

1.733

0.195

Analysis of Variance Table Road Sect. 2 (NB2)

Model

Residual Df

RSS

Df

Sum of Square

F

P-value

Simple

20

0.805

Main effect

19

0.726

1

0.079

2.409

0.142

Interaction effect

15

0.495

4

0.231

1.749

0.192