I nomi delle colonne:
[1] - Google
[2] - Yandex
[3] - Search.Mail.ru
[4] - Bing
Data          [1]      [2]      [3]      [4]
27 ott       11.1     88.9        0        0
3 nov        89.5     10.5        0        0
10 nov         50       50        0        0
17 nov       66.7     33.3        0        0
24 nov         50       50        0        0
1 dic        37.5     62.5        0        0
8 dic          50       50        0        0
15 dic         60       40        0        0
22 dic         50       50        0        0
29 dic       28.6     71.4        0        0
5 gian       14.3     85.7        0        0
12 gian        10       90        0        0
19 gian         0      100        0        0
26 gian         0      100        0        0
2 feb        29.7       70     0.24        0
9 feb        30.9       68        1        0
16 feb       12.5     87.5        0        0
23 feb          0      100        0        0
2 mar           0        0        0        0
9 mar        28.6     71.4        0        0
16 mar       37.5     62.5        0        0
23 mar         50       50        0        0
30 mar        100        0        0        0
6 apr         100        0        0        0
13 apr       44.4     55.6        0        0
20 apr          0      100        0        0
27 apr       33.3     66.7        0        0
4 mag         100        0        0        0
11 mag       22.2     77.8        0        0
18 mag          0      100        0        0
19 mag          0      100        0        0