| Code | Definition | Number of Accessions |
| 0 | VARIABLE | 7 |
| 1 | (0 = VARIABLE, 9 = UNIFORM) | 3 |
| 2 | (0 = VARIABLE, 9 = UNIFORM) | 30 |
| 3 | (0 = VARIABLE, 9 = UNIFORM) | 80 |
| 4 | (0 = VARIABLE, 9 = UNIFORM) | 103 |
| 5 | (0 = VARIABLE, 9 = UNIFORM) | 85 |
| 6 | (0 = VARIABLE, 9 = UNIFORM) | 140 |
| 7 | (0 = VARIABLE, 9 = UNIFORM) | 120 |
| 8 | (0 = VARIABLE, 9 = UNIFORM) | 155 |
| 9 | UNIFORM | 185 |