| Code | Definition | Number of Accessions |
| 1 | LOW (NONE UNIFORM) | 92 |
| 2 | (1 = LOW - NONE UNIFORM, HIGH - ALL UNIFORM) | 3 |
| 3 | (1 = LOW - NONE UNIFORM, HIGH - ALL UNIFORM) | 122 |
| 4 | (1 = LOW - NONE UNIFORM, HIGH - ALL UNIFORM) | 4 |
| 5 | (1 = LOW - NONE UNIFORM, HIGH - ALL UNIFORM) | 182 |
| 6 | (1 = LOW - NONE UNIFORM, HIGH - ALL UNIFORM) | 2 |
| 7 | (1 = LOW - NONE UNIFORM, HIGH - ALL UNIFORM) | 243 |
| 8 | (1 = LOW - NONE UNIFORM, HIGH - ALL UNIFORM) | 6 |
| 9 | HIGH (ALL UNIFORM) | 775 |
| M | MIXED | 39 |