I nomi delle colonne:
[1] - Windows 10
[2] - Windows 7
[3] - Android
[4] - Windows 8
[5] - Unix
Data          [1]      [2]      [3]      [4]      [5]
30 mar         15        2        2        0        0
31 mar         10        3        1        0        1
1 apr          16        4        1        0        1
2 apr           9        1        0        1        1
3 apr          13        3        1        0        1
4 apr           9        3        0        0        0
5 apr          11        4        1        1        0
6 apr           9        1        3        1        0
7 apr          12        5        2        1        0
8 apr           8        4        0        2        2
9 apr          11        0        1        2        1
10 apr          7        5        2        0        0
11 apr         15        3        2        5        0
12 apr         15        2        3        1        1
13 apr         20        5        3        0        0
14 apr         14        4        0        1        0
15 apr         20        0        1        0        1
16 apr         10        5        2        0        0
17 apr         14        0        1        0        0
18 apr          9        4        0        1        1
19 apr         17        0        1        3        0
20 apr         15        1        0        0        1
21 apr         11        3        3        0        0
22 apr          7        4        0        1        1
23 apr          7        2        0        3        2
24 apr         10        3        2        0        1
25 apr          5        2        1        3        1
26 apr          7        4        1        0        2
27 apr          6        3        3        2        2
28 apr         10        2        1        1        1
29 apr          6        1        1        2        0