set terminal jpeg
set output "Gnuplot5.jpg"
set title ' Flux en fonction du temps: '
set xlabel ' Temps (jj/mm)'
set ylabel ' Flux '
set xdata time
set timefmt "%Y-%m-%d"
set xtics format "%d-%m"
set style fill transparent solid 0.5 noborder
plot "flux.dat" using 1:2 with lines,\
     "flux.dat" using 1:3 with boxes lc rgb"green"