set data style linespoints set grid plot 'saida5.dat' using 1:2 title 'Cf (ve) replot 'saida5.dat' using 1:3 title 'Cf (pa) replot 'saida5.dat' using 1:4 title 'Cf (vácuo) set xlabel 'x / L' set title 'COEFICIENTE DE EMPUXO (adimensional)' replot