set xlabel "X(cm)"
set ylabel "Potential"
plot "out.dat" using 2:3 with l
pause -1 "Hit return to continue"
set xlabel "X(cm)"
set ylabel "Electron density"
plot "out.dat" using 2:4 with l
pause -1 "Hit return to continue"
set xlabel "X(cm)"
set ylabel "Ion density"
plot "out.dat" using 2:5 with l
pause -1 "Hit return to continue"
set xlabel "X(cm)"
set ylabel "Electric field"
plot "out.dat" using 2:6 with l
pause -1 "Hit return to continue"