set term pngcairo enhanced fontscale 1 size 6in,4in
outfile = 'rf-freq_vs_dp.png'
print outfile
set output outfile
set xlabel 'Momentum offset [%]'
set ylabel 'RF frequency /CBO'
set yrange [1.004:1.012]
set label 'rf-freq_vs_dp.gnu' at graph 1.02,0.02 rotate left font 'Verdana,8' noenhance
set timestamp offset graph 1.04,0.7 rotate font 'Verdana,6'
plot 'rf-freq_vs_dp.dat' u ($4*100):2 ps 1 pt 5 not