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