From these inputs the data processor determines a value indicative of the amount of one or {HEAD ~ both} of the first gaseous component and the second gaseous component in {TAIL ~ the mixture} according to the relationship: RHComp1·x+RHComp2·y=RHMix 
From these inputs the data processor determines a value indicative of the amount of one or { HEAD ~ both } of the first gaseous component and the second gaseous component in { TAIL ~ the mixture } according to the relationship : RHComp1·x+RHComp2·y = RHMix
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH