| Code | Definition | Number of Accessions |
| 1 | unacceptably low < 40,2 % | 41 |
| 2 | low 40,2-40,6 % | 5 |
| 3 | below average 40,7-41,1 % | 4 |
| 4 | above average 41,2-41,6 % | 9 |
| 5 | optimum value 41,7-48,9 % | 28 |
| 6 | above average 49,0-50,1 % | 4 |
| 8 | high 51,5-52,6 | 2 |
| 9 | unacceptably high > 52,6 % | 4 |