set terminal postscript portrait enhanced color solid 9
set output 

set xlabel "Frequency [Hz]"
set ylabel "Attenuation [dB]"
set title "Attenuation of shielding filter"
set logscale x
set grid xtics mxtics ytics mytics
set mytics 10
set mxtics 10
set key right


plot \
"sim/shielding_filter.data" using 1:2 title "47nH+3x1uF" with lines, \
"sim/shielding_filter.data" using 1:3 title "47nH+3x1uF+10nF." with lines, \
"sim/shielding_filter.data" using 1:4 title "47nH+3x1uF+100nF" with lines