I nomi delle colonne:
[1] - Google
[2] - Yandex
[3] - Search.Mail.ru
[4] - Bing
Data          [1]      [2]      [3]      [4]
27 ott       0.14      1.1        0        0
3 nov         2.4     0.29        0        0
10 nov       0.43     0.43        0        0
17 nov       0.29     0.14        0        0
24 nov       0.43     0.43        0        0
1 dic        0.43     0.71        0        0
8 dic        0.57     0.57        0        0
15 dic        3.9      2.6        0        0
22 dic       0.43     0.43        0        0
29 dic       0.29     0.71        0        0
5 gian       0.14     0.86        0        0
12 gian      0.14      1.3        0        0
19 gian         0     0.86        0        0
26 gian         0     0.29        0        0
2 feb          18     42.4     0.14        0
9 feb         4.3      9.4     0.14        0
16 feb       0.29        2        0        0
23 feb          0     0.29        0        0
2 mar           0        0        0        0
9 mar        0.29     0.71        0        0
16 mar       0.43     0.71        0        0
23 mar       0.71     0.71        0        0
30 mar       0.43        0        0        0
6 apr        0.86        0        0        0
13 apr       0.57     0.71        0        0
20 apr          0     0.43        0        0
27 apr       0.14     0.29        0        0
4 mag        0.14        0        0        0
11 mag       0.29        1        0        0
18 mag          0     0.14        0        0
20 mag          0      0.5        0        0