TABLE 4.

Model with two variables.

GLM_IZ_CZ
GLM Procedure
Class level information
Class	Levels	Values
Count	7	1 2 3 4 5 6 7
Pha	4	1 2 3 4
R	6	1 2 3 4 5 6
IZ	16	10 100 110 120 20 30 40 50 51 60 61 70 71 80 81 90
CZ	16	10 100 110 120 20 30 40 50 51 60 61 70 71 80 81 90
Fin	2	0 1
Number of read observations 745
Number of used observations 745
Source	DF	Sum of squares	Mean square	F-Value	Pr > F
Model	167	742.239623	4.44454	2.47	<0.0001
Error	577	1037.967088	1.798903	–	–
Total correct	744	1780.206711	–	–	–
R-square		Coef Var	MSE Root	Count mean
0.416940		39.63577	1.341232	3.383893
Source	DF	Tipo I SS	Mean square	F-Value	Pr > F
IZ	15	92.3365304	6.1557687	3.42	<0.0001
CZ	17	255.8652746	15.0508985	8.37	<0.0001
IZ*CZ	135	394.0378180	2.9187987	1.62	<0.0001