| Value | Category |
|---|---|
| 10 | minimally correct |
| 11 | minimally correct |
| 12 | minimally correct |
| 19 | other mini.corr. |
| 20 | part. corr. |
| 29 | other part. |
| 30 | compl. resp. |
| 31 | compl. resp. |
| 39 | other compl. |
| 70 | incorr. resp. |
| 76 | incorr. resp. |
| 79 | other incorr. |
| 90 | crossed out |
| 98 | not admin. |
| 99 | missing |
| 101 | .A |