| Value | Category |
|---|---|
| 10 | part. corr. |
| 11 | part. corr. |
| 19 | other part. corr. |
| 20 | corr. response |
| 21 | corr. response |
| 22 | corr. response |
| 29 | other corr. response |
| 70 | incor. response |
| 71 | incor. response |
| 72 | incor. response |
| 79 | other incor. response |
| 90 | crossed out,... |
| 98 | not admin. |
| 99 | missing |
| 101 | .A |