los nombres de las columnas:
[1] - Yandex
[2] - Google
[3] - Search.Mail.ru
[4] - Bing
Fecha         [1]      [2]      [3]      [4]
nov 22         18     81.9    0.048    0.008
dic 22       23.1     76.7     0.18   0.0073
en 23        29.5     70.4     0.12        0
feb 23       30.3     69.6      0.1        0
mar 23       31.7     68.2     0.11        0
abr 23       32.2     67.7     0.11    0.019
mayo 23        32       68     0.08        0
jun 23       32.3     67.6    0.056        0
jul 23       31.9     67.8     0.34        0
ag 23        34.4     65.3     0.36        0
sept 23      41.4     58.4     0.22    0.011
oct 23       46.8     52.9     0.38        0
nov 23       48.1     51.5     0.37        0
dic 23       52.9     46.6     0.44    0.015
en 24        57.4     42.1     0.49        0
feb 24       54.4     45.2     0.33     0.02
mar 24       52.7       47     0.27        0
abr 24       53.1     46.7     0.22        0
mayo 24      63.6     36.2     0.14        0
jun 24       65.3     34.6    0.045        0
jul 24       69.8     30.1    0.045        0
ag 24        67.2     32.6     0.13        0
sept 24      60.9     39.1    0.029        0
oct 24       61.4     38.5     0.12        0
nov 24       45.3     54.5     0.17        0
dic 24       50.8     49.1    0.056        0
en 25        56.5     43.5    0.039        0
feb 25       56.2     43.6     0.22        0
mar 25       39.2     60.7    0.099        0
abr 25       33.2     66.3     0.51        0
mayo 25      30.4     69.6        0        0