| Value | Category | Cases | |
|---|---|---|---|
| N1 | 12 |
44.4%
|
|
| N2 | 6 |
22.2%
|
|
| N3 | 3 |
11.1%
|
|
| N4 | 5 |
18.5%
|
|
| N5 | 1 |
3.7%
|