les titres des colonnes:
[1] - Android
[2] - Windows 10
[3] - MacOS/iPhone
[4] - MacOS
[5] - Windows 7
Date          [1]      [2]      [3]      [4]      [5]
13 oct       43.3     39.8      7.5      2.7      2.1
20 oct         45     38.8      7.2      2.6      1.9
27 oct       43.9     39.4      7.3      2.7        2
3 nov        43.4     39.8      7.4      2.8        2
10 nov       44.2     38.8      7.6      2.7        2
17 nov       43.4     39.6      7.5      2.6      2.1
24 nov       43.3     39.4      7.6      2.7      2.1
1 dec        43.4     39.8      7.5      2.7        2
8 dec        42.6     40.5      7.4      2.7      2.1
15 dec       41.2     42.2      7.5      2.7      2.1
22 dec       40.5     43.1      7.4      2.8      2.1
29 dec       41.6       42      7.4      2.7      2.2
5 jan        44.5     39.2      7.5      2.7        2
12 jan       41.2     42.5      7.3      2.8      2.1
19 jan       40.4       43      7.3        3      2.2
26 jan       41.1     42.7      7.3      2.9      2.1
2 fev        40.6     43.2      7.1      3.2        2
9 fev        41.9     42.1      7.1      2.9        2
16 fev       43.4     40.7      7.1      2.9      1.9
23 fev       43.3     40.7      7.2      3.1      1.9
2 mar        42.6     41.8      6.9      3.5      1.9
9 mar        43.5     41.1      6.8      3.5      1.9
16 mar       43.2     41.3      6.9      3.6      1.8
23 mar       42.7     41.5      6.9      3.5      1.9
30 mar       43.1     41.2      6.8      3.5        2
6 avr        44.3     40.8      6.4      3.5      1.9
13 avr         44     41.6      5.9      3.5      1.8
20 avr       44.3     40.4      6.3      3.7      1.9
27 avr       45.1     38.9      6.7      3.8      1.9
4 mai        45.3     38.9      6.5        4      1.8
7 mai          42     41.7      6.6      4.2      1.9