set output 'linsolve_time_a.ps' 
set term postscript color enhanced font 'Helvetica,18'  
set key top right 
set xlabel 'Number of Elements'  
set ylabel 'Time to solve equation (s)' 
set logscale x 
set logscale y 
plot [3:200][]  'time_test_1.dat'     using ($2):($6) with points  t '' lw 1.5 pt 3  
set output 
quit 
