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SC_DPC$ -- Surface code values for srfcCode='DPC$': XBT depth correction status
01 Known XBT Probe Type, Needs Correction
02 Known XBT Probe Type, No Correction
03 Unknown XBT Probe Type, Not enough information, leave alone
04 Known XBT Probe Type, Correction done
05 Unknown XBT Probe Type, Correction done