les titres des colonnes:
[1] - Google Chrome
[2] - Yandex.Browser
[3] - Safari 1
[4] - Opera (Blink)
[5] - ChromePlus
Date          [1]      [2]      [3]      [4]      [5]
5 nov        61.3     17.4     14.7        2      1.3
12 nov       62.1     17.4     14.2      1.9      1.3
19 nov       61.2     17.5     14.6        2      1.3
26 nov       61.8     17.2     14.3      2.1      1.3
3 dec        62.1     17.1     14.2      1.9      1.3
10 dec       61.6     17.4     14.5      1.9      1.3
17 dec         61     17.5     14.4      2.4      1.4
24 dec       61.3     17.2     14.9        2      1.4
31 dec       62.7     16.2     14.6        2      1.4
7 jan        62.4     17.1     14.3      2.1      1.5
14 jan       61.3     17.8     14.1      2.4      1.4
21 jan       61.4     17.5       14      2.5      1.3
28 jan       59.9     18.7     14.1      2.5      1.4
4 fev        59.4     19.3     14.1      2.5      1.4
11 fev       60.9     17.6     14.4      2.4      1.5
18 fev       59.8     18.4     14.3      2.7      1.4
25 fev       59.1     18.7     14.8      2.7      1.4
3 mar        59.2     18.9     14.5      2.6      1.4
10 mar       59.3     19.1     14.1      2.7      1.4
17 mar       57.1     20.7     14.5      2.6      1.4
24 mar       53.3       22       17      2.7      1.5
31 mar       57.4     19.7     15.4      2.5      1.4
7 avr        59.1     19.2     14.6      2.4      1.4
14 avr       57.5     19.9     15.1      2.5      1.4
21 avr       57.8     19.7     14.9      2.6      1.4
28 avr       57.7     19.6       15      2.6      1.4
5 mai          61     18.2     14.1      2.3      1.4
12 mai       57.2     20.4     15.3      2.4      1.5
19 mai       57.7       20     14.9      2.4      1.4
26 mai       56.9     20.3     15.2      2.4      1.5
31 mai       57.1     20.6     14.8      2.3      1.4