| Code | Definition | Number of Accessions |
| 1 | very low | 5 |
| 2 | (1= very low, 3= low, 5= medium, 7= high, 9= very high) | 5 |
| 3 | low | 5 |
| 4 | (1= very low, 3= low, 5= medium, 7= high, 9= very high) | 3 |
| 5 | medium | 5 |
| 6 | (1= very low, 3= low, 5= medium, 7= high, 9= very high) | 5 |
| 7 | high | 5 |
| 8 | (1= very low, 3= low, 5= medium, 7= high, 9= very high) | 2 |
| 9 | very high | 1 |