Distribution of Values for
Primary head diameter (HEAD DIAMETER)
| Range | Number of Accessions |
| 1.94 - 6.49 | 99 |
| 6.49 - 11.05 | 2 |
| 11.05 - 15.61 | 6 |
| 15.61 - 20.16 | 152 |
| 20.16 - 24.72 | 309 |
| 24.72 - 29.28 | 176 |
| 29.28 - 33.83 | 79 |
| 33.83 - 38.39 | 38 |
| 38.39 - 42.94 | 15 |
| 42.94 - 47.5 | 8 |