los nombres de las columnas:
[1] - Marcador
[2] - No definido
[3] - yandex.ru
[4] - google.com
[5] - Otros
Fecha         [1]      [2]      [3]      [4]      [5]
dic 22       30.7     16.7     12.6      4.7      7.3
en 23        30.4     16.2     12.3      5.8      7.3
feb 23       29.7     15.7     13.5      5.8      8.4
mar 23       27.9     15.9     12.8      5.6     11.5
abr 23       30.2     17.9     14.5      6.1      5.9
mayo 23        30     17.1     14.4      6.1      5.5
jun 23       30.1     16.8     14.2      6.1      5.5
jul 23       29.8     16.3     15.3      5.8      5.8
ag 23          30     16.2     15.4      5.7      5.2
sept 23      30.1     16.7     14.3        6      5.3
oct 23       29.9     16.7     13.7      7.2      4.9
nov 23       30.4     17.3     13.1      6.5      5.2
dic 23       30.7     17.7     12.3      6.3      5.1
en 24        29.8     17.1     13.7      6.7      5.1
feb 24       30.3     17.8       13      6.7      4.7
mar 24       29.5     17.3     13.9      6.8      4.5
abr 24       29.4     17.2     13.3      7.3      4.4
mayo 24      29.9     16.9     13.5      8.2      3.9
jun 24       31.2     17.5     13.1      6.5        4
jul 24       30.6     17.3     13.8      6.6      4.2
ag 24        30.4     17.3     14.1      6.9      3.8
sept 24        31       17     14.6      6.7      3.7
oct 24       31.5     17.8     13.4      6.8      3.8
nov 24       33.2     17.8     12.2      6.7        4
dic 24       32.1     18.1       13        7      3.5
en 25        30.8     17.7     13.2      8.9      3.4
feb 25       31.2       18     13.5      8.4      3.2
mar 25       31.2     17.9       13      8.3        3
abr 25       31.2     17.8     12.4      8.2      2.7
mayo 25      31.3     17.5     12.3      8.9      2.5
jun 25       31.5     17.9     12.3      8.7      2.2