I found this bye google searching the internet for
convert dbspl to pascal units
"'Pa' is the abbreviation for Pascal, which is a unit of pressure that is equivalent to 93.9794 dB SPL (Sound Pressure Level)."
so, the SAS statement is
Pa=93.9794* ;
If you need to know how to save a pemanent SAS dataset, you probably need a short cours e on introductory SAS. Cody's book might be useful there.