Jan 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0
#0   1   2   3   4   5   6   7   8   9
Feb 4.3 5.1 3.9 4.5 4.4 4.9 5.0 4.7 4.1 4.6 4.4 4.3 4.8 4.4 4.2 4.5 4.4
Mar 1.0 1.2 2.0 2.4 2.5 3.0 3.5 3.7 4.0 4.7 5.0
Apr 4.6 4.7 5.2 7.3 8.4 8.8 9.1 8.3 7.4 6.4 5.3
May 3.5 7.2 5.4 6.3 7.4 8.3 8.8 3.3 5.4 5.7 3.9
#0   1   2   3   4   5   6   7   8   9   10
#        *           *           *