set terminal wxt
set terminal wxt font "/Library/Fonts/Sans Serif, 11"
set multiplot
set size 1.0,0.5
set datafile separator ";"
set xlabel "index"
set ylabel "EUR"
set origin 0.0,0.0
plot "VaR.csv" using 1:2 title "one day" with steps
set origin 0.0,0.5
plot "VaR.csv" using 1:3 lt 3 title "ten days" with steps
unset multiplot

set output "VaR.png"
set terminal png font "/Library/Fonts/Sans Serif, 11"
set multiplot
set size 1.0,0.5
set datafile separator ";"
set xlabel "index"
set ylabel "EUR"
set origin 0.0,0.0
plot "VaR.csv" using 1:2 title "one day" with steps
set origin 0.0,0.5
plot "VaR.csv" using 1:3 lt 3 title "ten days" with steps
replot