set terminal postscript eps dashlength 3 linewidth 2
set encoding iso_8859_1
set output 'kemia.eps'

set autoscale

set xlabel 'Aika / t'
set ylabel 'Lämpötila / T'

set style line 1 lt 1 lw 2

plot 'kemia.txt' with lines linestyle 1 notitle smooth bezier