les titres des colonnes:
[1] - Windows 10
[2] - Android
[3] - MacOS
[4] - Windows 7
[5] - MacOS/iPhone
Date          [1]      [2]      [3]      [4]      [5]
27 oct         58     24.5      3.9      3.5      7.4
3 nov        52.9     25.4      5.3      4.1      8.6
10 nov       48.8     25.6      7.4      4.2      7.4
17 nov       58.5     18.8      2.3      3.4        8
24 nov       52.1     20.5      6.2      7.5      4.8
1 dec        46.1       23      6.9      5.4     12.7
8 dec        52.4     16.7        6        6      8.3
15 dec       57.9     18.7      4.1      4.1        7
22 dec       53.7     16.4      5.6      6.2        9
29 dec       44.9     26.5      7.5      8.2      9.5
5 jan        31.8     34.6      6.5      6.5     12.1
12 jan       50.3     21.2      2.6      4.6     15.9
19 jan       42.4      5.3     21.1      1.7      4.4
26 jan       55.8     17.6      6.5        5      6.5
2 fev        46.7     18.1      7.1      8.8      7.1
9 fev        49.1     18.1      4.2      7.4     15.7
16 fev         54     24.2        3      5.1      7.1
23 fev       50.8     19.3      5.5      7.2      8.3
2 mar        53.9     22.1      5.9      4.9      7.4
9 mar        61.2     12.8      4.8      4.8      8.5
16 mar       28.1     44.2      1.1        4     17.9
23 mar       53.8     23.1      5.5      3.8      9.3
30 mar       48.4     25.3      5.9      3.2      9.7
6 avr        27.5     53.9      2.1      4.2      5.6
13 avr         28     51.8      2.7      6.2      5.1
20 avr       36.8     46.2      2.2      2.9      5.4
27 avr       38.3     45.3      3.8      4.2      3.8
4 mai        45.9     35.3      1.8      4.7      3.5
11 mai       50.6     31.1      1.8      3.7      4.3
18 mai       54.3     28.3      1.7        4      3.5
21 mai       41.9     37.1      7.6      2.9      5.7