data wheatlatin;
input location orientation variety $ yield;
cards;
1 1 A 31
2 1 B 39.5
3 1 C 30.5
1 2 B 34
2 2 C 24.5
3 2 A 28
1 3 C 15
2 3 A 25.5
3 3 B 31
;
run;