set size 0.6
set nologscale y
set title 'Minimum ABTE 8-4 operators'
set xlabel 'Time'
set ylabel 'Convergence exponent'
set key right bottom

p "data/convfac-8-4-optimised/convfac84-optimised-low.xg" title 'dx=0.1-0.05' w l lw 3
rep "data/convfac-8-4-optimised/convfac84-optimised-med.xg" title 'dx=0.05-0.025' w l lw 3
rep "data/convfac-8-4-optimised/convfac84-optimised-hi.xg" title 'dx=0.025-0.0125' w l lw 3

set out 'optimised-8-4-convfac.eps'
set terminal postscript eps enhanced monochrome
replot
set terminal x11