set output 'lumdist_delta_a.ps' 
set term postscript enhanced color 'Helvetica,18'  
set grid 
set key top left 
set xlabel 'Redshift z ' 
set ylabel 'Difference in distance modulus from {/Symbol W}_M = 1' 
set title 'Luminosity distance for H_0 = 70 km/s/Mpc, {/Symbol W}_{/Symbol L} = 0' 
plot [0.0:1.5][] './delta_lumdist_00.20_01.00.dat' using 1:($5-$11)   with lines   lt 1 lc 1 lw 3       t '{/Symbol W}_M = 0.20 '   ,  './delta_lumdist_00.50_01.00.dat' using 1:($5-$11)   with lines   lt 1 lc 2 lw 3       t '{/Symbol W}_M = 0.50 '   ,  './delta_lumdist_01.00_01.00.dat' using 1:($5-$11)   with lines   lt 1 lc 3 lw 3       t '{/Symbol W}_M = 1.00 '   ,  './delta_lumdist_02.00_01.00.dat' using 1:($5-$11)   with lines   lt 1 lc 4 lw 3       t '{/Symbol W}_M = 2.00 '   
set output 
quit 
