| Code | Definition | Number of Accessions |
| 2 | very narrow to narrow 8,1 - 10,0 (mm) | 2 |
| 3 | narrow 10,1 - 12,0 (mm) | 4 |
| 4 | narrow to medium 12,1 - 14,0 (mm) | 7 |
| 5 | medium 14,1 - 16,0 (mm) | 15 |
| 6 | edium to wide 16,1 - 18,0 (mm) | 15 |
| 7 | wide 18,1 - 20,0 (mm) | 3 |
| 8 | wide to very wide 20,1 - 22,0 (mm) | 2 |
| 9 | very wide > 22,1 (mm) | 1 |