| Code | Definition | Number of Accessions |
| 1 | LEAST POTENTIAL | 1 |
| 2 | (1 = LEAST POTENTIAL, 9 = MOST POTENTIAL) | 5 |
| 3 | (1 = LEAST POTENTIAL, 9 = MOST POTENTIAL) | 28 |
| 4 | (1 = LEAST POTENTIAL, 9 = MOST POTENTIAL) | 100 |
| 5 | (1 = LEAST POTENTIAL, 9 = MOST POTENTIAL) | 111 |
| 6 | (1 = LEAST POTENTIAL, 9 = MOST POTENTIAL) | 82 |
| 7 | (1 = LEAST POTENTIAL, 9 = MOST POTENTIAL) | 22 |
| 8 | (1 = LEAST POTENTIAL, 9 = MOST POTENTIAL) | 2 |