set terminal postscript eps color enhanced font "Helvetica,20pt" size 12cm,9cm 

# common settings
set format x "%2.1f"
set format y "%2g"
set tics scale 2
set tics nomirror
set ytics 500
set xtics 0.5

set xlabel "Time Delay {/Symbol t}"
set ylabel "Two-Photon Coincidences"

set output "g2_noetalon.eps"
set yrange [5500:7000]
set xrange [-2:2]
set samples 1000
plot "g2_noetalon.txt" using ($1)+3.8:2:3 w yerrorbars lc -1 ti "arc", "" using ($1)+3.8:4:5 w yerrorbars lc 1 ti "laser", "" using ($1)+3.8:6:7 w yerrorbars lc 2 ti "arclaser"