x		y
			①	②	③	④	⑤	⑥	⑦

#
# $Id: using.dem,v 1.6 2003/10/28 05:35:54 sfeam Exp $
#
# Requires data file "using.dat" from this directory,
# so change current working directory to this directory before running.
#

set title "Convex     November 1-7 1989    Circadian"
set key left box
set xrange[-1:24]
plot 'using.dat' using 2:4 title "Logged in" with impulses,\
     'using.dat' using 2:4 title "Logged in" with points

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x		y
			①	②	③	④	⑤	⑥	⑦

set xrange [1:8]
#set xdtic
set title "Convex     November 1-7 1989"
set key below
set label "(Weekend)" at 5,25 center
plot 'using.dat' using 3:4 title "Logged in" with impulses,\
     'using.dat' using 3:5 t "Load average" with points,\
     'using.dat' using 3:6 t "%CPU used" with lines
unset label

Click here for minimal script to generate this plot