| Value | Category | Cases | |
|---|---|---|---|
| N1 | 26 |
38.8%
|
|
| N2 | 22 |
32.8%
|
|
| N3 | 8 |
11.9%
|
|
| N4 | 10 |
14.9%
|
|
| N5 | 1 |
1.5%
|