Patient     Drug1      Drug2    
                     1           0.7        1.9
                     2          -1.6        0.8
                     3          -0.2        1.1
                     4          -1.2        0.1
                     5          -0.1       -0.1
                     6           3.4        4.4
                     7           3.7        5.5
                     8           0.8        1.6
                     9           0.0        4.6
                    10           2.0        3.4