| Kind | Value | annotation | ||
| enumeration | 1_none | |||
| enumeration | 2_basal zone | |||
| enumeration | 3_basal quarter | |||
| enumeration | 4_basal half | |||
| enumeration | 5_distal half | |||
| enumeration | 6_distal quarter | |||
| enumeration | 7_tip | |||
| enumeration | 8_band | |||
| enumeration | 9_marginal zone | |||
| enumeration | 10_central zone | |||
| enumeration | 11_throughout |