About retention results of 308
16:50 45:50 34:40 18:05 14:38 13:54 14:41 18:53 11:07 12:44 21:08 19:35 17:40 18:01 43:43 56:31 19:01 27:00 21:46 18:48 53:41 22:19 24:58 18:10 24:36 26:26 24:23 30:27 24:38 33:40 15:21 22:02 87:10 48:21 64:58 76:34 36:27 28:16 57:15 38:38 28:13 33:29 32:48 37:01 32:39 34:56