No. of degree

Factor or factor interaction

of freedom

F value

P^a

Year

3

38.92

<0.0001***

Month

9

3.43

0.0004**

Region

11

1.43

0.1528

Host

4

0.61

0.6530

Race

77

1.23

0.0984

Year*month

14

2.15

0.0089**

Year*region

29

1.72

0.0111**

Year*host

3

1.04

0.3088

Year*race

37

1.41

0.0539*

Month* region

30

1.85

0.0039**

Month*host

2

2.12

0.1210

Month*race

53

1.28

0.0921

Region*host

1

0.18

0.6672

Region*race

50

1.26

0.1132

Host*race

7

1.00

0.3697

Year*month*region

13

4.15

<0.0001***

Year*month*race

23

1.41

0.0971

Year*region*host

0

-^b

-

Year*region*race

14

0.74

0.7323

Year*host*race

0

-

-

Month*region*host

0

-

-

Month*region*race

22

1.37

0.1172

Region*host*race

0

-

-

Year*month*region*host

0

-

-

Year*month*region* race

2

0.23

0.7959

Year*month*region*host*race

0

-

-