highest mark: 26
mean        : 16.3

35266     22
36607     22
136670    11
164180    13
143836    14
117599    11
123595    13
137421    12
82135     16
76092     18
143156     9
136669    25
29375     12
115973    13
155795    11
139078    13
42421     22
57618     15
163964    19
147210    18
89723     17
38156     17
105904    24
143740    15
153987     8
49113     23
72594     18
149677    16
164029    26