PID Prefix Map
This map shows the general scheme used when assigning the first two (alphabetic) characters of NGS survey mark PIDs. Note that occasionally, for a number of reasons, a mark may have a PID that falls outside of this general pattern.
This map shows the general scheme used when assigning the first two (alphabetic) characters of NGS survey mark PIDs. Note that occasionally, for a number of reasons, a mark may have a PID that falls outside of this general pattern.