Distribution of Values for
Root core intensity (Root core intensity)
| Code | Definition | Number of Accessions |
| 1 | Extremely light | 10 |
| 2 | Very light | 1 |
| 3 | Light | 19 |
| 4 | Light-intermediate | 3 |
| 5 | Intermediate | 55 |
| 6 | Intermediate-dark | 12 |
| 7 | Dark | 32 |
| 8 | Very dark | 1 |
| 9 | Extremely dark | 1 |