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

#set terminal pngcairo enhanced font "Helvetica,12pt" size 1920,1080

# common settings
set format y2 "%2.1f"
#set format x "%2.0f"
set tics scale 2
set tics nomirror
set ytics 50
set y2tics 0.1
set mytics 5
set my2tics 2
set mxtics 2
set yrange [0.75*248.072522:1.4*248.072522]
set y2range [0.75:1.4]
set xrange [-2.5:2.5]
set border linewidth 1
#set grid

set xlabel "Timing separation, {/Symbol t} (ns)"
set ylabel "Two-photoevent coincidences"
set y2label "g^{(2)}({/Symbol t})" rotate by -90

set output "arclamp.eps"
#set output "arclamp.png"
set samples 10000

g2(x) = base+peak*exp(-2*abs(x)/wid)

peak = 72.7744091 #+/- 28.1744110 (38.71%) (init = 49.91713)
#cen = 248.024014 #+/- 0.03963860 (0.02%) (init = 248)
wid = 0.28985875 #+/- 0.13654377 (47.11%) (init = 0.5)
base = 248.072522 #+/- 0.89146177 (0.36%) (init = 249.5857)

set label "Arc lamp" at screen 0.60, 0.85

plot "20260727_1157_arclamp_3mmEtalon55C_noFiberEtalon_limited_set_g2_3shift.txt" using ($1-248.0):2:(sqrt($2)) with yerrorbars lw 2 lc rgb "blue" notitle, g2(x) with lines lw 3 lc rgb "black" notitle


reset