6 set y2label "height (m)"
8 set xtics border out nomirror
9 set ytics border out nomirror
10 set y2tics border out nomirror
11 plot "$i" using 1:3 with lines lt 2 axes x1y2 title "raw height",\
12 "$i" using 1:7 with lines lt 4 axes x1y2 title "kalman height",\
13 "$i" using 1:9 with lines lt 1 axes x1y1 title "avg error", \
14 "$i" using 1:10 with lines lt 3 axes x1y1 title "valid"