gluc person time repl time20plus time.comb
1    92      A  pre    a        pre       pre
2    93      A  pre    b        pre       pre
3    84      A   20    a        20+        20
4    88      A   20    b        20+        20
5    88      A   30    a        20+       30+
6    90      A   30    b        20+       30+
7    86      A   60    a        20+       30+
8    89      A   60    b        20+       30+
9    87      A   90    a        20+       30+
10   90      A   90    b        20+       30+
11   85      B  pre    a        pre       pre
12   85      B  pre    b        pre       pre
13   74      B   20    a        20+        20
14   76      B   20    b        20+        20
15   79      B   30    a        20+       30+
16   79      B   30    b        20+       30+
17   76      B   60    a        20+       30+
18   79      B   60    b        20+       30+
19   74      B   90    a        20+       30+
20   78      B   90    b        20+       30+
21   90      C  pre    a        pre       pre
22   91      C  pre    b        pre       pre
23   84      C   20    a        20+        20
24   86      C   20    b        20+        20
25   87      C   30    a        20+       30+
26   92      C   30    b        20+       30+
27   90      C   60    a        20+       30+
28   90      C   60    b        20+       30+
29   92      C   90    a        20+       30+
30   93      C   90    b        20+       30+
31   86      D  pre    a        pre       pre
32   90      D  pre    b        pre       pre
33   79      D   20    a        20+        20
34   81      D   20    b        20+        20
35   84      D   30    a        20+       30+
36   86      D   30    b        20+       30+
37   81      D   60    a        20+       30+
38   84      D   60    b        20+       30+
39   83      D   90    a        20+       30+
40   84      D   90    b        20+       30+
41   94      E  pre    a        pre       pre
42   97      E  pre    b        pre       pre
43   93      E   20    a        20+        20
44   93      E   20    b        20+        20
45   94      E   30    a        20+       30+
46   95      E   30    b        20+       30+
47   91      E   60    a        20+       30+
48   93      E   60    b        20+       30+
49   90      E   90    a        20+       30+
50   90      E   90    b        20+       30+