On a recent check stub I was paid for 3,832 MCF of NG. According to the NDIC production numbers 4,838 MCF's were sold. This leaves a difference of 1,006 MCF's. My check stub also indicates that 37,349 ? of NGL were sold. First what are the NGL units called? Maybe gallons? Is there some sort of conversion factor to figure the relationship between the 37,349 and the 1,006 MCF? I have other wells on which I recently begin receiving royalties and I do understand how the oil is calculated but am having trouble understanding the NGL. I have called the well operator but they were not able to answer my questions or this matter so I am hoping someone here can put me on the right track.