[Observium] SNMP returning too much data

I am trying to graph the number of GPS satellites my receiver is seeing, however, what is returned via SNMP has more information than what I need.

This is from the documentation. I just want to strip the first integer as the answer.

For one satellite with vehicle number 16: 1,16,C,-158 <-- I need the "1" For six satellites: 6,12,C,-156,14,C,-155,8,T,-162,24,C,-158,18,C,161,6,C,-160 <-- I need the "6"

Can Observium do this?

Thanks, -- Tim