les titres des colonnes:
[1] - Windows 10
[2] - Android
[3] - MacOS/iPhone
[4] - Windows 7
[5] - MacOS
Date          [1]      [2]      [3]      [4]      [5]
20 oct       58.8     18.8      5.2      5.2      7.2
27 oct         58     24.5      7.4      3.5      3.9
3 nov        52.9     25.4      8.6      4.1      5.3
10 nov       48.8     25.6      7.4      4.2      7.4
17 nov       58.5     18.8        8      3.4      2.3
24 nov       52.1     20.5      4.8      7.5      6.2
1 dec        46.1       23     12.7      5.4      6.9
8 dec        52.4     16.7      8.3        6        6
15 dec       57.9     18.7        7      4.1      4.1
22 dec       53.7     16.4        9      6.2      5.6
29 dec       44.9     26.5      9.5      8.2      7.5
5 jan        31.8     34.6     12.1      6.5      6.5
12 jan       50.3     21.2     15.9      4.6      2.6
19 jan       42.4      5.3      4.4      1.7     21.1
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     15.7      7.4      4.2
16 fev         54     24.2      7.1      5.1        3
23 fev       50.8     19.3      8.3      7.2      5.5
2 mar        53.9     22.1      7.4      4.9      5.9
9 mar        61.2     12.8      8.5      4.8      4.8
16 mar       28.1     44.2     17.9        4      1.1
23 mar       53.8     23.1      9.3      3.8      5.5
30 mar       48.4     25.3      9.7      3.2      5.9
6 avr        27.5     53.9      5.6      4.2      2.1
13 avr         28     51.8      5.1      6.2      2.7
20 avr       36.8     46.2      5.4      2.9      2.2
27 avr       38.3     45.3      3.8      4.2      3.8
4 mai        45.9     35.3      3.5      4.7      1.8
11 mai       50.6     31.1      4.3      3.7      1.8
17 mai       55.1     26.9      3.2      4.5      1.9