los nombres de las columnas:
[1] - MoscĂș
[2] - San Petersburgo
[3] - Chelyabinsk
[4] - Yakutsk
[5] - Nizhni Novgorod
Fecha         [1]      [2]      [3]      [4]      [5]
dic 22       52.6      3.6        4      2.6        3
en 23          54      3.4      3.6      3.4      3.1
feb 23       47.3      5.1        4      2.7      4.2
mar 23       49.9      3.7      3.5      2.5      3.6
abr 23       47.3      5.7        3      3.1      3.7
mayo 23      53.7     11.6      2.2      2.1      1.7
jun 23         53      7.1      3.1      1.6      1.9
jul 23       57.2      6.9      2.2      2.3      2.1
ag 23        61.7      7.1      1.3      3.1      2.2
sept 23      55.1      3.8      2.7      1.6      2.7
oct 23       56.9      4.5      2.1      1.8      2.6
nov 23       54.8      5.1      2.4      1.5      2.8
dic 23       59.5      5.5      1.1     0.78      3.2
en 24        57.5      4.6      2.1     0.29      3.7
feb 24       56.3      5.1      1.6      0.3      3.4
mar 24       58.5      4.4      2.4      0.1      2.3
abr 24       56.6      5.6      1.7     0.11      1.5
mayo 24      50.9      5.2      2.3     0.46      2.5
jun 24       51.2      6.5      2.9        1      3.1
jul 24       52.8      5.3      2.8     0.34      1.6
ag 24        54.2      5.1      3.4      1.1        2
sept 24      51.6        6      3.7     0.37      1.7
oct 24       56.3      6.5      3.4     0.35      1.6
nov 24       52.5      4.8      2.7      0.5      2.3
dic 24       58.4        7      2.5      0.2      1.6
en 25        52.7      6.3      3.5     0.19      1.5
feb 25       59.4      3.6      3.6      1.4      1.4
mar 25         55      6.9      3.3     0.35     0.88
abr 25       54.4      7.2      3.1     0.69      1.5
mayo 25      52.7      4.9      2.5        0     0.78
jun 25       52.4     0.79      2.4        0        4