reset

set encoding iso_8859_1
set title "Phasenverschiebung bei verschiedenen Frequenzen"
set xlabel "[{/Symbol w} in s^{-1}]"
set ylabel "[{/Symbol f} in Grad]"
set grid xtics ytics
set key top left

plot \
'DatenSchwingkreis.txt' us ($1)*(2*pi):(($3) > 180 ? ($3)-360 : ($3)) notitle lt 1

set output "schwingkreis_phi.eps"
set term postscript enhanced eps color; replot