| Kind | Value | annotation | ||
| enumeration | 1_none | |||
| enumeration | 2_along veins | |||
| enumeration | 3_along veins and on margin | |||
| enumeration | 4_between veins throughout | |||
| enumeration | 5_between veins in central zone | |||
| enumeration | 6_between veins in intermediate zone | |||
| enumeration | 7_between veins and on margin | |||
| enumeration | 8_marginal zone | |||
| enumeration | 9_throughout |