set terminal png enhanced font arial 16 size 1440,900

set xrange [4000:400]
set yrange [0:1.9]
set xlabel "Vlnočet [cm^{-1}]"
set ylabel "Absorbance"
set xtics 500
set ytics 0.20
set ytics format "%.2f"

set output "IR_PSAlMe_Stefek_Chvojka.png"
plot "IR_PSAlMe_Stefek_Chvojka.txt" using ($1):($2 +0.02) with lines title "PSAlMe v KBr" lc rgb "blue" lw 2