| Code | Definition | Number of Accessions |
| 2 | (1 = VERY EARLY, 9 = VERY LATE) | 3 |
| 3 | (1 = VERY EARLY, 9 = VERY LATE) | 4 |
| 4 | (1 = VERY EARLY, 9 = VERY LATE) | 4 |
| 5 | (1 = VERY EARLY, 9 = VERY LATE) | 7 |
| 6 | (1 = VERY EARLY, 9 = VERY LATE) | 3 |
| 7 | (1 = VERY EARLY, 9 = VERY LATE) | 6 |