The controller 52 thus receives as input a temperature that is approximately the average of {HEAD ~ the temperatures} sensed by the sensors 80 for {TAIL ~ each shorted pair} of electrodes 66 
sensed for
The controller 52 thus receives as input a temperature that is approximately the average of { HEAD ~ the temperatures } sensed by the sensors 80 for { TAIL ~ each shorted pair } of electrodes 66
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH