10:00
6
student
04:00
2
33:00
4
23:00
0
05:00
0
08:00
3
05:00
1
15:00
0
39:00
1
08:00
1
07:00
3
07:00
0
08:00
0
11:00
0
01:09
0
12:00
1
08:00
0
00:18
0
24:00
1
10:00
0
00:14
0
18:00
1
07:00
2
16:00
1
08:00
2
46:00
0
00:39
0
00:18
2
05:00
1
10:00
0
13:00
0
