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