les titres des colonnes:
[1] - Russie
[2] - USA
[3] - Allemagne
[4] - Grande-Bretagne
[5] - Chine
Date          [1]      [2]      [3]      [4]      [5]
10 nov         74      6.5      1.9     0.93     0.93
17 nov       72.7      4.5     0.57      1.7     0.57
24 nov       75.3      8.9     0.68     0.68      2.1
1 dec        78.4      4.4     0.98     0.49     0.49
8 dec          72      8.9      2.4      0.6      1.8
15 dec       67.3      9.9      1.2      1.2      3.5
22 dec       65.5      7.3      2.3     0.56      6.2
29 dec       70.1      6.8        0      2.7      2.7
5 jan          57      7.5      5.6      2.8     0.93
12 jan       72.8        6      2.6      1.3      1.3
19 jan       31.5      6.8      1.2     0.24     12.6
26 jan       70.9      7.5      2.5        0      4.5
2 fev        69.8      5.5      2.2      2.2      1.1
9 fev        65.7      9.3      2.8        0      3.2
16 fev       70.7      8.1        0        0        4
23 fev       73.5      6.6     0.55      1.1      2.2
2 mar        67.2     10.8        2     0.49      2.9
9 mar          66     10.6      2.7     0.53      1.1
16 mar         50      8.8     0.73      8.8      3.6
23 mar       71.4      3.8     0.55      1.6      2.7
30 mar       70.4      9.1      1.6      1.1      2.7
6 avr        45.4     40.1      1.4     0.35      1.8
13 avr       48.2     41.4      0.6      0.6      0.3
20 avr       45.8     37.9      2.2        0     0.36
27 avr       45.3     43.2      1.4        0      0.7
4 mai        57.6     28.2     0.59     0.59        0
11 mai       69.5     16.5        0        0     0.61
18 mai       72.3       15      2.9     0.58      1.2
25 mai         59       25        2        0      1.5
1 juin       64.9     18.8        0      2.1      2.1
5 juin       68.8     20.3     0.72     0.72        0