set terminal epslatex
set output './lab-gnuplottex-fig1.tex'
set grid
set xlabel '$ N $, Вт'
set ylabel '$ \Delta T $, C'

set multiplot
set yrange [0:1500]
set xrange [0:7]
set key spacing 2
set key bottom right
set key off

set style line 1 lt 1 pt 7 ps 0.5 lc rgb "red"
set style line 2 lt 1 pt 7 ps 0.5 lc rgb "blue"
set style line 4 lc black

set key box linestyle 4
set key opaque Left

plot "2.1.3(22.8).data" using 1:2  notitle linestyle 1