Column titles:
[1] - 1 session
[2] - 2 sessions
[3] - from 3 to 5 sessions
[4] - from 6 to 10 sessions
[5] - more than 10 sessions
Date          [1]      [2]      [3]      [4]      [5]
13 Apr.       446        5        0        0        0
14 Apr.       577        6        1        0        0
15 Apr.       569       12        3        0        0
16 Apr.       439        7        1        0        0
17 Apr.       462        6        2        0        0
18 Apr.       437        4        1        0        0
19 Apr.       422        2        0        0        0
20 Apr.       385        5        0        0        0
21 Apr.       441        8        0        0        0
22 Apr.       401        6        1        0        0
23 Apr.       394       11        1        0        0
24 Apr.       426       15        3        0        0
25 Apr.       489       11        1        0        0
26 Apr.       464        8        0        0        0
27 Apr.       435        3        3        1        0
28 Apr.       441        9        2        0        0
29 Apr.       475        7        1        0        0
30 Apr.       438        8        0        0        0
1 May         434        3        1        0        0
2 May         394        3        2        0        0
3 May         499        5        1        0        0
4 May         339        4        0        0        0
5 May         420       10        2        0        0
6 May         489        5        2        0        0
7 May         402        8        1        0        0
8 May         408        9        2        0        0
9 May         369        4        0        0        0
10 May        384        9        1        0        0
11 May        409        8        1        0        0
12 May        442        9        3        0        0
13 May        455        4        4        2        0