About study efficiency results of 10,000
09:42
08:22
10:01
10:01
09:41
10:02
14:41
09:03
06:53
08:20
14:14
07:16
09:13
34:48
24:54
27:10
34:25
30:54
107:08
25:18
59:15
30:21
27:49
124:24
21:28
20:45
26:09
21:14
20:31
25:45
20:13
19:14
25:51
23:55
20:07
14:24
19:29
20:43
25:41
20:53
22:22
24:12
41:44
10:22
18:58
19:28