# set terminal pngcairo  transparent enhanced font "arial,10" fontscale 1.0 size 600, 400 
# set output 'sampling.4.png'
set key fixed right top vertical Right noreverse enhanced autotitle box lt black linewidth 1.000 dashtype solid
set key opaque
set style data lines
set trange [ 20.0000 : 50.0000 ] noreverse nowriteback
set urange [ 1.00000 : 100.000 ] noreverse nowriteback
set vrange [ 1.00000 : 100.000 ] noreverse nowriteback
set xrange [ 1.00000 : 100.000 ] noreverse nowriteback
set x2range [ * : * ] noreverse writeback
set yrange [ * : * ] noreverse writeback
set y2range [ * : * ] noreverse writeback
set zrange [ * : * ] noreverse writeback
set cbrange [ * : * ] noreverse writeback
set rrange [ * : * ] noreverse writeback
set colorbox vertical origin screen 0.9, 0.2 size screen 0.05, 0.6 front  noinvert bdefault
NO_ANIMATION = 1
## Last datafile plotted: "++"
splot '++' using 1:2:($1*$2)