| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1 |
2.2%
|
|
| 9 | 1 |
2.2%
|
|
| N1 | 20 |
43.5%
|
|
| N2 | 4 |
8.7%
|
|
| N3 | 15 |
32.6%
|
|
| N5 | 4 |
8.7%
|
|
| N6 | 1 |
2.2%
|