Age                             Subjects
      1     2     3      4     5    6     7      8     9     10    11
8    21.0  21.0  20.5  23.5  21.5  20.0  21.5   23.0  20.0  16.5  24.5
10   20.0  21.5  24.0  24.5  23.0  21.0  22.5   23.0  21.0  19.0  25.0
12   21.5  24.0  24.5  25.0  22.5  21.0  23.0   23.5  22.0  19.0  28.0
14   23.0  25.5  26.0  26.5  23.5  22.5  25.0   24.0  21.5  19.5  28.0