script to plot the stacked data
sioseis << eof
procs diskin gains plot prout end
diskin
   ipath stack.day068-0000z  end
end
plot
   scalar 3.E-08 wiggle 0
   srpath sunfil nsecs 3  ann gmtint anninc 5
   nibs 75 trpin 75 vscale 3.333 def .04 clip .04 end
end
prout
   fno 0 lno 99999 ftr 0 ltr 9999 noinc 100 end
end
gains
   alpha 2 end
end
end
eof
xloadimage -r 90 sunfil &