| Value | Category | Cases | |
|---|---|---|---|
| 1 | Safety | 2 |
4.5%
|
| 2 | Building | 42 |
95.5%
|
| 3 | Bad weat | 0 |
0%
|
| 4 | No teach | 0 |
0%
|
| 5 | Other | 0 |
0%
|
| Sysmiss | 1452 |