los nombres de las columnas:
[1] - Rusia
[2] - Alemania
[3] - Bielorusia
[4] - Finlandia
[5] - EEUU
Fecha         [1]      [2]      [3]      [4]      [5]
oct 22       67.8      1.2      6.3     0.14     0.79
nov 22       68.5      1.4      5.9     0.24     0.86
dic 22       71.8      1.3        6     0.21     0.88
en 23        68.5      1.6        6     0.49     0.77
feb 23       69.4      1.3        6     0.48     0.75
mar 23       72.6      1.4      5.6     0.53     0.72
abr 23       70.3      1.4      7.2     0.59     0.76
mayo 23      65.8      1.3        6    0.084      0.8
jun 23       74.1      1.4      5.8    0.091      1.1
jul 23       73.5      2.1      5.4     0.72        1
ag 23        72.5      3.1      6.1     0.74      1.2
sept 23      68.6      2.4       11     0.72     0.67
oct 23       71.3      2.2      4.8      1.1      5.4
nov 23         73      1.2      4.3     0.41      6.6
dic 23       73.3      1.7      4.4     0.23      6.5
en 24        71.6      3.5      4.1     0.32      5.9
feb 24         69      5.8      4.3     0.68      7.6
mar 24       74.5      6.5      3.9      1.9      1.6
abr 24       67.6      9.5      5.1      4.1     0.96
mayo 24      72.7      6.8      3.7      2.1      2.5
jun 24       72.4      9.5        4      1.9      2.7
jul 24       67.7     12.8      3.5      3.6      2.4
ag 24        68.9     10.5      4.2      3.9      2.1
sept 24      64.9      3.5     17.9      1.6      1.7
oct 24       74.1      4.5        5      1.7      1.9
nov 24       68.4      5.9        6      2.6      2.6
dic 24       68.9      5.3      5.2      3.5      1.7
en 25          73        2      6.2      1.4      1.3
feb 25       69.5        5      5.6      4.3      2.4
mar 25       71.6      5.3      3.6      2.7      2.6
abr 25       62.4      8.4      5.8      5.2      2.4