set terminal postscript eps color enhanced font "Helvetica,16pt" size 8.6cm,6cm dashlength 2.0 
set output "trendarc.eps"

# common settings
set format y "%2.1f"
set tics scale 2
set tics nomirror
set ytics 0.1
set yr [1.525:1.875]

set format x "%2g"
set xtics 60

A(x)=a
a=1.7
set fit errorvariables
set xrange [0:90]
	FIT_LIMIT=1.e-15
	FIT_MAXITER=1000
	fit A(x) 'g2trend.txt' using 1:2:3 via a

set xrange [0:360]
set xlabel "Time [Minutes]"
set ylabel "g^{(2)}({/Symbol t}=0)" rotate by 90

set samples 1000

plot 'g2trend.txt' using ($1*4):2:3 w yerrorbars lc 1 ps 0.8 pt 7 notitle,\
A(x) w l lw 3 lt 2 lc -1 notitle