# set terminal pngcairo  transparent enhanced font "arial,10" fontscale 1.0 size 600, 400 
# set output 'using.1.png'
set key fixed left top vertical Right noreverse enhanced autotitle box lt black linewidth 1.000 dashtype solid
set style increment default
set style data lines
set title "Convex     November 1-7 1989    Circadian" 
set xrange [ -1.00000 : 24.0000 ] 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
## Last datafile plotted: "using.dat"
plot 'using.dat' using 2:4 title "Logged in" with impulses,     'using.dat' using 2:4 title "Logged in" with points