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