#set term pngcairo dashed enhanced
set term png enhanced transparent 
#set term post eps enhanced color "Arial" 11
set grid
set key top right
set output 'plotXsec.png'

unset logscale; set logscale y


set xlabel '-t (GeV^2)'
set ylabel 'Dsigma/Dt (micro b/GeV^2)'

plot [0:1]  'obs.txt' using 1:2 w l ls 1 lw 3 lc rgb "blue" title 'Cross section'

unset output
unset logscale
unset ylabel

set output 'plotBA.png'
plot [0:1] [-1:1]  'obs.txt' using 1:3 w l ls 1 lw 3 lc rgb "red" title 'Integrated beam asymmetry'
unset output

set output 'plotPsig.png'
plot [0:1] [-1:1]  'obs.txt' using 1:4 w l ls 1 lw 3 lc rgb "green" title 'Parity asymmetry'
unset output