set datafile separator ","
set title  "Manifold Pressure"
set ylabel "inHg"
#set y2label "Pressure Pa"
#set y2range [40000:102000]
#set y2tics border
set xlabel "Altitude"

plot "aaa-100.csv" every :10:110 using   12:5 notitle  with lines 2

pause mouse key
if (MOUSE_KEY != 27) reread