Clean a ZPSEC data space and compute final ZPSPEC statistics.
% zpclean --help
usage: zpclean g [-v] [-h]]
arg1 - name of parameter for X axis (Fpeak,g,r)
% zpclean g
% cat zpclean.out
-2.76996 -2.73600 0.13051 0.02512 27 (mean,median,sig,me,n)