wherein {TAIL ~ a plurality} of expanding ranges are set for said target conductivity, each with a corresponding increased modifying value to said {HEAD ~ target conductivity} 
wherein { TAIL ~ a plurality } of expanding ranges are set for said target conductivity , each with a corresponding increased modifying value to said { HEAD ~ target conductivity }
OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD