| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1.Per day | 2 |
0.2%
|
| 2 | 2.Per Month | 9 |
1%
|
| 3 | 3.Per semester | 4 |
0.4%
|
| 4 | 4.Per Academic year | 1 |
0.1%
|
| 5 | 5.Per one school period | 12 |
1.3%
|
| 6 | 6.Not Applicable | 883 |
96.8%
|
| 9 | 9.Missing | 1 |
0.1%
|
| Sysmiss | 5457 |