set term jpeg large
set output "/var/www/wp/wp-content/uploads/2009/08/practice_graph.jpg"
#set output "/tmp/practice_graph.jpg"

set ylabel "Hours"
set xlabel "Date"
set style fill solid 1 border -1
set xdata time
set timefmt "%y%m%d"
set xtics rotate

plot '/var/www/practiceGraph/prac_data.dat' using 1:($2+$3+$4+$5) title "Live performance" with boxes, '' using 1:($2+$3+$4) title "Other group practice" with boxes, '' using 1:($2+$3)title "On Ensemble practice" with boxes, '' using 1:2 title "Personal practice" with boxes