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