Source

Degrees of freedom

Year

2012

2013

Class (C)

1

153.9**

79.5**

Treatment (T)

5

18.0**

45.5**

C × T

5

14.1**

16.3**

Site w/C (S)

2

172.6**

105.5**

T × S

10

5.9**

18.5**

Replications w/S

8

4.5**

6.3

Error

40

0.54

3.1