| Code | Definition | Number of Accessions |
| 2 | (1= very low, 9= very high) | 1 |
| 3 | (1= very low, 9= very high) | 6 |
| 4 | (1= very low, 9= very high) | 28 |
| 5 | (1= very low, 9= very high) | 67 |
| 6 | (1= very low, 9= very high) | 200 |
| 7 | (1= very low, 9= very high) | 209 |
| 8 | (1= very low, 9= very high) | 91 |
| 9 | very high | 14 |