set terminal postscript landscape enhanced color solid "Helvetica" 12 

set xlabel "S"
set ylabel "Sqrt(N_B)"
set title "Variation of N_B with S"
set grid
set data style linespoints	
set linestyle 1 lt 1 lw 2 pt 1
set linestyle 2 lt 3 lw 2 pt 4
set linestyle 3 lt 7 lw 2 pt 8
set key right bottom spacing 1.5
set output 'NS.eps'

plot 'data.txt' using ($1) : (sqrt($3)) title "sqrt(N_B)" ls 1


set xlabel "N_B"
set ylabel "Time (T_{S}) (sec)"
set y2label "Time (T_{D} and T_{A}) (sec)"
set ytics nomirror
set y2tics nomirror
set xtics nomirror 
set nox2tics
set title "Variation of T with N_B"
set grid
set data style linespoints	
set linestyle 1 lt 1 lw 2 pt 1
set linestyle 2 lt 3 lw 2 pt 4
set linestyle 3 lt 7 lw 2 pt 8
set key right bottom spacing 1.5
set output 'NT.eps'

plot 'data.txt' using ($3) : ($2) title "T_{S}" ls 1, 'data.txt' using ($3) : (($5)/1000) axes x1y2 title "T_{D}" ls 2, 'data.txt' using ($3) : (($6)/1000) axes x1y2 title "T_{A}" ls 3