| Code | Definition | Number of Accessions |
| 1 | very small <2,0 | 1 |
| 2 | very small - small 2,0-3,0 | 3 |
| 3 | small 3,1-4,0 | 72 |
| 4 | small - intermediate 4,1-5,0 | 89 |
| 5 | intermediate 5,1-6,0 | 298 |
| 6 | intermediate - large 6,1-7,0 | 204 |
| 7 | large 7,1-8,0 | 129 |
| 8 | large - very large 8,1-9,0 | 25 |
| 9 | very large >9,0 | 9 |