| Value | Category |
|---|---|
| 01 | 01:00-04:59 |
| 02 | 05:00 |
| 03 | 05:01-05:29 |
| 04 | 05:30-05:59 |
| 05 | 06:00 |
| 06 | 06:01-06:29 |
| 07 | 06:30-06:59 |
| 08 | 07:00 |
| 09 | 07:01-07:29 |
| 10 | 07:30-07:59 |
| 11 | 08:00 |
| 12 | 08:01-08:29 |
| 13 | 08:30-08:59 |
| 14 | 09:00 |
| 15 | 09:01-09:59 |
| 16 | 10:00 |
| 17 | 10:01-10:59 |
| 18 | 11:00 |
| 19 | 11:01-11:59 |
| 20 | 12:00 |
| 21 | 12:01-12:59 |
| 22 | 13:00 |
| 23 | 13:01-13:59 |
| 24 | 14:00 |
| 25 | 14:01-14:59 |
| 26 | 15:00 |
| 27 | 15:01-15:59 |
| 28 | 16:00 |
| 29 | 16:01-16:59 |
| 30 | 17:00 |
| 31 | 17:01-17:59 |
| 32 | 18:00 |
| 33 | 18:01-18:59 |
| 34 | 19:00 |
| 35 | 19:01-19:59 |
| 36 | 20:00 |
| 37 | 20:01-20:59 |
| 38 | 21:00 |
| 39 | 21:01-21:59 |
| 40 | 22:00 |
| 41 | 22:01-22:59 |
| 42 | 23:00 |
| 43 | 23:01-23:59 |
| 44 | 24:00 |
| 45 | 00:01-00:59 |
| 94 | Worked at home |
| 98 | Unknown |
| 99 | NIU (not in universe) |