| Code | Definition | Number of Accessions |
| 1 | LAX | 425 |
| 2 | (1 = LAX, 9 = VERY DENSE) | 1118 |
| 3 | (1 = LAX, 9 = VERY DENSE) | 7782 |
| 4 | (1 = LAX, 9 = VERY DENSE) | 18427 |
| 5 | (1 = LAX, 9 = VERY DENSE) | 11081 |
| 6 | (1 = LAX, 9 = VERY DENSE) | 6202 |
| 7 | (1 = LAX, 9 = VERY DENSE) | 4985 |
| 8 | (1 = LAX, 9 = VERY DENSE) | 1284 |
| 9 | VERY DENSE | 532 |