yield	variety	block
93.5	1	1
66.6	1	2
50.5	1	3
42.4	1	4
102.9	2	1
53.2	2	2
47.4	2	3
43.8	2	4
67.0	3	1
54.7	3	2
50.0	3	3
40.1	3	4
86.3	4	1
61.3	4	2
50.7	4	3
46.4	4	4