los nombres de las columnas:
[1] - Yandex
[2] - Google
[3] - Search.Mail.ru
[4] - Rambler
Fecha         [1]      [2]      [3]      [4]
nov 22         78     20.6      1.4        0
dic 22       77.4     17.7        4        0
en 23        74.6     23.4      1.7        0
feb 23         84     12.8      2.4        0
mar 23       80.3     17.8      1.6        0
abr 23       66.9     32.6     0.52        0
mayo 23      89.9      9.8     0.36        0
jun 23       84.2     15.5     0.27        0
jul 23       90.8      8.7     0.48        0
ag 23        88.3     11.5     0.26        0
sept 23      84.4     15.6        0        0
oct 23       78.1     21.5        0     0.33
nov 23       83.5     15.5     0.67     0.34
dic 23       90.1      9.9        0        0
en 24        87.5     11.7        0     0.37
feb 24       87.4     11.9        0        0
mar 24       84.8     15.2        0        0
abr 24       85.3     14.7        0        0
mayo 24      88.6     10.7        0        0
jun 24       84.5     15.2        0     0.29
jul 24       88.7     11.3        0        0
ag 24        88.2     11.6        0        0
sept 24      90.2      9.8        0        0
oct 24       82.3     17.4        0        0
nov 24       76.1     23.9        0        0
dic 24         74     24.9        0        0
en 25        78.9     20.5        0        0
feb 25       73.4     25.2        0        0
mar 25       75.9     23.7        0        0
abr 25       71.8     27.2     0.47        0
mayo 25      82.4     16.2        0        0