set output 'dartmouth_metal_b.ps' 
set term postscript color enhanced 'Helvetica,18'  
set grid 
set key top left  
set ylabel 'absolute V magnitude'  
set xlabel '(V-I) color ' 
set title 'Dartmouth isochrones for 10 Gyr and different metallicity ' 
 plot [0.4:1.1][6:1]     './iso_age_10gyr_fe-20.dat' using ($8-$10):($8)        with lines lt 1 lc rgbcolor "red" lw 3 t '[Fe/H] -2.0'  ,    './iso_age_10gyr_fe-15.dat' using ($8-$10):($8)        with linespoints pt 3 ps 0.8 lt 1 lc rgbcolor "green"  lw 3 t '[Fe/H] -1.5' ,    './iso_age_10gyr_fe-10.dat' using ($8-$10):($8)        with lines lt 1 lc rgbcolor "blue" lw 3 t '[Fe/H] -1.0' ,    './iso_age_10gyr_fe-05.dat' using ($8-$10):($8)        with linespoints pt 6 ps 0.8 lt 1 lc rgbcolor "cyan"  lw 3 t '[Fe/H] -0.5' ,    './iso_age_10gyr_fe+00.dat' using ($8-$10):($8)        with lines lt 1  lc rgbcolor "brown" lw 3  t '[Fe/H]  0.0'  ,    './iso_age_10gyr_fe+05.dat' using ($8-$10):($8)        with linespoints pt 4 ps 0.5 lt 1 lc rgbcolor "black" lw 2 t '[Fe/H] +0.5'  
set output 
quit 
