set output 'dartmouth_example_a.ps' 
set term postscript color enhanced 'Helvetica,18'  
set style line 1 lt rgb 'red' lw 3  
set style line 2 lt rgb 'sea-green' lw 3  
set style line 3 lt rgb 'blue' lw 3  
set style line 4 lt rgb 'cyan' lw 3  
set style line 5 lt rgb 'violet' lw 3  
set grid 
set key top right 
set ylabel 'Gaia G absolute magnitude ' 
set xlabel 'Gaia color (BP - RP) ' 
set title 'Dartmouth isochrone for 1.0 Gyr, [Fe/H] = -1.5 '
plot [-0.5:3][12:-2] 'dartmouth_example.txt' using ($7-$8):6    with points ls 1 pt 1 ps 0.9  t ''  
set output 
quit 
