set term postscript color enhanced "Times-Roman" 22
#set term pslatex
set output "cbar.ps"
set key off
set size 1.,0.5
set yrange [-5:5]
set ytics -5,5,5
set xrange [0:100]
set xlabel "Beam position monitor"
set ylabel    "~C{.6-}_{12}[%]"  # puts a bar over the C
plot "./cbar_17689.dat" u 7:($4*100) ps 1 pt 4