Another Way-Too-Dry RRS Sounding

I thought that the difference between the RRS too-dry sounding at 00Z yesterday and the GPS PW was as bad as I'd seen. But this afternoon's sounding at TWC was even worse - 0.37" for RRS versus 1 inch or so for GPS. The GPS values are very consistent around the southern part of state, so the RRS data from TWC are probably seriously in error - again, I think this is the worst I've seen.