5 set ylabel "height (m)"
8 set xtics border out nomirror
9 set ytics border out nomirror
10 set y2tics border out nomirror
11 plot "$i" using 1:3 with lines lt 1 axes x1y1 title "raw height",\
12 "$i" using 1:7 with lines lt 2 axes x1y1 title "kalman height",\
13 "$i" using 1:8 with lines lt 3 axes x1y1 title "max height",\
14 "$i" using 1:6 with lines lt 4 axes x1y2 title "kalman accel",\
15 "$i" using 1:12 with lines lt 5 axes x1y2 title "valid"