As you were in a NSPS pay band which encompassed more than one GS grade, 14 and 15, the government would have compared your adjusted salary to the Step 4 rate of the highest applicable GS grade encompassed within the band.sk the Lawyer received the following question (paraphrased for easier reading and clarity) from a reader on a legal matter that might be of interest to the entire audience. Q: I was a GS-13 and accepted a promotion in August 2006 to NH-04 under the Acquisition Demo civilian management system.