set term png size 800,480 set datafile separator ";" set ylabel "Voltage (mV)" samples(x) = $0 > 4 ? 5 : ($0+1) avg5(x) = (shift5(x), (back1 + back2 + back3 + back4 + back5) / samples($0)) shift5(x) = (back5 = back4, \ back4 = back3, \ back3 = back2, \ back2 = back1, \ back1 = x) init(x) = (back1 = back2 = back3 = back4 = back5 = sum = 0) plot sum=init(0), \ datafile using (avg5($7 - ($7 + $8 + $9) / 3)), \ datafile using (avg5($8 - ($7 + $8 + $9) / 3)), \ datafile using (avg5($9 - ($7 + $8 + $9) / 3))