Column titles:
[1] - 1 session
[2] - 2 sessions
[3] - from 3 to 5 sessions
[4] - from 6 to 10 sessions
[5] - more than 10 sessions
Date          [1]      [2]      [3]      [4]      [5]
6 May         100        0        0        0        0
7 May           0      100        0        0        0
8 May         100        0        0        0        0
9 May           0        0        0        0        0
10 May         50       50        0        0        0
11 May        100        0        0        0        0
12 May         50       50        0        0        0
13 May        100        0        0        0        0
14 May        100        0        0        0        0
15 May        100        0        0        0        0
16 May        100        0        0        0        0
17 May          0      100        0        0        0
18 May        100        0        0        0        0
19 May          0        0        0        0        0
20 May          0      100        0        0        0
21 May         50        0       50        0        0
22 May        100        0        0        0        0
23 May          0        0        0        0        0
24 May         50        0       50        0        0
25 May        100        0        0        0        0
26 May          0        0      100        0        0
27 May        100        0        0        0        0
28 May          0        0        0        0        0
29 May          0        0      100        0        0
30 May        100        0        0        0        0
31 May        100        0        0        0        0
1 Jun.        100        0        0        0        0
2 Jun.          0        0        0        0        0
3 Jun.          0        0        0        0        0
4 Jun.          0        0      100        0        0
5 Jun.         50       50        0        0        0