les titres des colonnes:
[1] - 1 jour
[2] - 2 jours
[3] - 3-4 jours
[4] - 5-7 jours
Date          [1]      [2]      [3]      [4]
6 oct        98.5      1.2     0.17    0.094
13 oct       98.7      1.1     0.13        0
20 oct       99.1     0.73     0.13        0
27 oct       98.6      1.2     0.13        0
3 nov        98.7      1.2    0.096        0
10 nov       98.8        1     0.17        0
17 nov         98      1.9    0.049        0
24 nov       98.1      1.6     0.35        0
1 dec        98.6      1.2     0.21        0
8 dec        98.2      1.4     0.41        0
15 dec       98.7     0.97     0.37        0
22 dec       98.4      1.3     0.26        0
29 dec       98.4      1.5     0.16        0
5 jan        97.8      1.8     0.32        0
12 jan       96.9      2.7     0.47        0
19 jan       98.1      1.6     0.35        0
26 jan       98.3      1.4     0.35        0
2 fev        97.2      2.5      0.2    0.078
9 fev          97      2.5     0.26     0.22
16 fev       98.3      1.4     0.17    0.085
23 fev       98.2      1.3     0.47    0.089
2 mar        97.7      1.8     0.42    0.079
9 mar        98.3      1.4     0.24        0
16 mar       98.8     0.91     0.21    0.035
23 mar       98.7     0.84     0.35     0.11
30 mar       98.3      1.4     0.33        0
6 avr        98.8        1     0.16        0
13 avr         98      1.4     0.49     0.11
20 avr       97.9      1.3     0.62     0.21
27 avr       97.7      1.1     0.94     0.19
4 mai        97.6      1.9     0.35     0.13