Level History of Studying
| Level | Date |
|---|---|
| 21 | 2018-06-24 18:41:15 |
| 20 | 2018-06-24 05:10:35 |
| 19 | 2018-06-24 04:00:01 |
| 18 | 2018-06-24 03:39:48 |
| 17 | 2018-06-24 02:59:04 |
| 16 | 2018-06-23 23:15:03 |
| 15 | 2018-06-23 22:38:47 |
| 14 | 2018-06-23 22:20:38 |
| 13 | 2018-06-13 02:58:28 |
| 12 | 2018-06-13 02:54:07 |
| 11 | 2018-06-13 02:45:19 |
| 10 | 2018-06-13 02:42:09 |
| 9 | 2018-06-13 02:38:01 |
| 8 | 2018-06-13 02:31:27 |
| 7 | 2018-06-13 02:19:38 |
| 6 | 2018-06-13 02:11:33 |
| 5 | 2018-06-13 02:07:02 |
| 4 | 2018-06-13 02:05:58 |
| 3 | 2018-06-13 02:04:21 |
| 2 | 2018-06-13 02:03:07 |