131 Horizon designation
The horizon designation is a combination of several symbols:
1 A number that gives information about discontinuities, i.e. the number of materials in which the soil has formed. This number is stored in the field HORIZON_DISCONTINUITY.
2 One or two capital letters that designate the type of master horizon (or transitional horizon). These letters are stored in the field HORIZON_MASTER.
3 Lowercase letters that designate subordinate characteristics of the horizon. These letters are stored in the field HORIZON_SUBORDINATE.
4 A number that designate vertical subdivisions. This number is stored in the field HORIZON_VERTICAL.