# set terminal pngcairo  transparent enhanced font "arial,10" fontscale 1.0 size 500, 350 
# set output 'fit.8.png'
set key bmargin center horizontal Right noreverse enhanced autotitles nobox
set title "fit weighted towards low temperatures" 
set xlabel "Temperature T  [deg Cels.]" 
set ylabel "Density [g/cm3]" 
l(x) = y0 + m*x
y0 = 1.06986180180288
m = -0.000969050590760458
GPFUN_l = "l(x) = y0 + m*x"
FIT_CONVERGED = 1
FIT_NDF = 35
FIT_STDFIT = 0.00136220340861128
FIT_WSSR = 6.49459344251267e-05
plot 'lcdemo.dat', l(x)
## fit l(x) 'lcdemo.dat' using 1:2:4 via y0, m