RSm Rq Rsk PSm Mean width of the profile elements Pq Root mean square slope Psk Skewness WSm (RSm = Sm at ISO4287 '84) Wq Wsk Mean value of the profile element width Xs Root mean square value of the ordinate slopes Quotient of mean cube value of the ordinate within a sampling length. dZ/dX within a sampling length. values Z(x) and cube Pq, Rq, Wq respectively, within a sampling length.
annaabi.ee 
