| Code | Definition | Number of Accessions |
| 1 | very low < 0,3 (kg.m2) | 1 |
| 2 | very low to low 0,30 - 0,5 (kg.m2) | 2 |
| 3 | low 0,51 - 0,7 (kg.m2) | 14 |
| 4 | low to medium 0,71 - 0,9 (kg.m2) | 10 |
| 5 | medium 0,91 - 1,1 (kg.m2) | 17 |
| 6 | medium to high 1,11 - 1,3 (kg.m2) | 2 |
| 7 | high 1,31 - 1,5 (kg.m2) | 1 |