y  treat  block
 8.7  A     1
 8.9  A     2
 9.2  A     3
 8.3  A     4
 8.8  B     1
 8.4  B     2
 9.6  B     3
 8.3  B     4
 7.4  C     1
 8.0  C     2
 8.9  C     3
 7.9  C     4
 7.9  D     1
 7.3  D     2
 9.0  D     3
 7.6  D     4
10.2  E     1
 9.3  E     2
11.3  E     3
 9.5  E     4