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]
1 Dec.       84.5     11.2        4     0.31    0.028
8 Dec.       84.5     11.2      3.9      0.3    0.028
15 Dec.      84.8       11      3.8      0.3    0.031
22 Dec.      85.1     10.8      3.7      0.3    0.029
29 Dec.      85.6     10.6      3.5     0.27    0.025
5 Jan.       86.1     10.5      3.2     0.22    0.018
12 Jan.      84.7     11.2      3.8     0.27    0.023
19 Jan.      84.9       11      3.8      0.3    0.025
26 Jan.      84.8     11.1      3.8     0.29    0.027
2 Feb.       84.9       11      3.8     0.29    0.027
9 Feb.       85.1     10.8      3.8     0.29    0.026
16 Feb.      84.6       11        4     0.32    0.026
23 Feb.      85.6     10.5      3.6     0.27    0.026
2 Mar.       84.3     11.2      4.1     0.32    0.027
9 Mar.         84     11.4      4.2     0.32    0.027
16 Mar.      83.2       12      4.5     0.33     0.03
23 Mar.      84.1     11.5      4.1     0.31    0.027
30 Mar.      85.4     10.7      3.6     0.27    0.025
6 Apr.       85.6     10.6      3.5     0.25    0.024
13 Apr.      85.4     10.8      3.6     0.26    0.023
20 Apr.      86.8      9.9        3     0.21    0.021
27 Apr.      86.9      9.8      3.1     0.24    0.022
4 May        87.7      9.4      2.7     0.19     0.02
11 May         87      9.8      2.9      0.2     0.02
18 May         86     10.2      3.4     0.28    0.027
25 May         87      9.7        3     0.23    0.024
1 Jun.       86.2     10.1      3.4     0.27    0.024
8 Jun.       85.6     10.4      3.7     0.29    0.031
15 Jun.      85.8     10.4      3.5     0.25    0.025
22 Jun.        85     10.8      3.8      0.3    0.028
28 Jun.      85.6     10.4      3.6     0.29    0.028