| Value | Category | Cases | |
|---|---|---|---|
| N1 | 322 |
82.1%
|
|
| N2 | 56 |
14.3%
|
|
| N3 | 8 |
2%
|
|
| N4 | 1 |
0.3%
|
|
| N5 | 3 |
0.8%
|
|
| N9 | 2 |
0.5%
|