| Code | Definition | Number of Accessions |
| 2 | very small to small > 1,2 ≤ 1,5 (cm²) | 4 |
| 4 | small to medium > 1,8 ≤ 2 (cm²) | 3 |
| 5 | medium > 2 ≤ 2,4 (cm²) | 3 |
| 6 | medium to large > 2,4 ≤ 2,7 (cm²) | 1 |
| 7 | large > 2,7 ≤ 3 (cm²) | 6 |
| 8 | large to very large > 3 ≤ 3,3 (cm²) | 1 |
| 9 | very large > 3,3 (cm²) | 8 |