trat   bloco    resp
1	b1	73
1	b2	68
1	b3	74
1	b4	71
2	b1	73
2	b2	67
2	b3	75
2	b4	72
3	b1	75
3	b2	78
3	b3	78
3	b4	73
4	b1	73
4	b2	71
4	b3	75
4	b4	75