set terminal postscript enhanced eps solid color size 8.6cm,6cm font "Helvetica,16pt"
set output "od_vs_bandwidth.eps"

f(x)=5.746*(a*x+1)
a=0.0986812


set xlabel font "Helvetica,18" "Optical Density"
set ylabel font "Helvetica,18" "Idler bandwidth (MHz)"

plot [15:35] [5:30] 'bandwidth_vs_od.dat' u 1:3:2:4 w xyerrorbars pt 7 ps 1 notitle,  'bandwidth_vs_od.dat' u 1:5:2:6 w xyerrorbars pt 6 ps 1 lc rgb "blue" notitle, f(x) lc rgb "red" lw 2 notitle