set terminal postscript enhanced eps color size 8.6cm,2.3cm font "Helvetica,11pt"
set output 'plot_F.eps'
set border 3
set bars 0
set isosamples 40,40
set samples 400,400
set multiplot 
set size 0.48,0.95;
set origin 0.5,0.07
f(x)=(x>0)?a*exp(-(x-x0)/c):0
g(x)=(x<0)?ap*exp((x-x0)/cp):0
x0=0;a=100;c=10;cp=3;ap=100;
fit [0:] f(x) 'out1.dat' u ($1-139):2 via a,c
fit [-40:0] g(x) 'out1.dat' u ($1-139):2 via ap,cp
#set xlabel font "Helvetica,11" "Time delay {/Symbol D}t_{IS} (ns)"
set label font "Helvetica,11" "{/Symbol D}t_{is} (ns)" at first -3, first -95
set xtics nomirror
set ytics 100 nomirror font "Helvetica,11"
set label font "Helvetica,11" "Coincidences" at first -59, first 70 rotate by 90
set label font "Helvetica,11" "{/Symbol t}_{B}=13.1 {/Symbol \261} 0.2 ns" at first 17, first 310 
set label font "Helvetica,11" "B" at first -30, first 310 
plot [-40:60] 'out1.dat' u ($1-139):2:(sqrt($2))w yerrorbars notitle pt 7 ps 0.5 lc rgb 'red',(f(x)+g(x)) lc rgb "blue" lw 2 lt 1 notitle

#set rmargin at 1.1
set size 0.48,0.95;
unset label
set origin 0.02,0.07
x0=0;a=100;c=10;cp=3;ap=100;
fit [0:] f(x) 'out.dat' u ($1-138.5):2 via a,c
fit [-40:0] g(x) 'out.dat' u ($1-138.5):2 via ap,cp
#set label font "Helvetica,16" "1(a)" at first -35, first 800
set label font "Helvetica,11" "Coincidences" at first -61, first 150 rotate by 90
#set xlabel font "Helvetica,11" "Time delay {/Symbol D}t_{IS} (ns)"
set xtics nomirror
set ytics 200 nomirror font "Helvetica,11"
set label font "Helvetica,11" "{/Symbol D}t_{is} (ns)" at first -3, first -240
set label font "Helvetica,11" "{/Symbol t}_{A}=5.7 {/Symbol \261} 0.1 ns" at first 17, first 800
set label font "Helvetica,11" "A" at first -30, first 810 
plot [-40:60] 'out.dat' u ($1-138.5):2:(sqrt($2))w yerrorbars notitle pt 7 ps 0.5 lc rgb 'red',(f(x)+g(x)) lc rgb "blue" lw 2 lt 1 notitle
unset multiplot