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