set style data line plot 'avr' using 1 title "te", 'avr' using 2 title "ti", 'avr' using 3 title "ae", 'avr' using 4 title "ai", 'avr' using 5 title "pl", 'avr' using 6 title "pr", 'avr' using ($13+$14) title "ct", 'avr' using ($13-$14) title "ca"