Column titles:
[1] - rostelecom
[2] - mts
[3] - megafon
[4] - tele2-ru
[5] - corbina
Date          [1]      [2]      [3]      [4]      [5]
18 Apr.         2        3        3        1        1
19 Apr.         1        1        1        1        0
20 Apr.         1        1        1        0        1
21 Apr.         1        2        1        0        0
22 Apr.         0        2        1        1        0
23 Apr.         4        5        2        0        1
24 Apr.         1        2        0        1        1
25 Apr.         2        2        0        1        2
26 Apr.         2        3        1        0        0
27 Apr.         2        2        1        0        1
28 Apr.         2        3        0        2        0
29 Apr.         4        3        0        0        1
30 Apr.         1        3        0        0        0
1 May           3        1        0        0        0
2 May           1        1        0        1        0
3 May           2        1        0        0        0
4 May           4        2        0        1        0
5 May           2        1        0        0        0
6 May           3        3        3        0        1
7 May           2        1        1        0        0
8 May           5        1        3        2        0
9 May           1        2        1        0        0
10 May          1        3        1        0        0
11 May          1        1        0        0        0
12 May          0        1        3        0        0
13 May          0        2        0        2        1
14 May          3        2        0        1        1
15 May          4        1        1        1        1
16 May          2        2        0        0        1
17 May          1        2        1        1        0
18 May          3        3        0        0        0
   total       61       62       25       16       13