set format x "%d/%m/%y"
set xtics rotate
set grid
set terminal png
set xdata time
set ylabel "Active tickets"
set xlabel "\nDate"
set title "Active tickets by status over time for 2002 - now"
set timefmt "%Y-%m-%d"
set output "ticket-status-all.png"
plot [ ] [0:] "ticket-status-all.txt" using 1:2 ti "assigned" with lines, \
	"ticket-status-all.txt" using 1:3 ti "reopened" with lines, \
	"ticket-status-all.txt" using 1:4 ti "new (with owner)" with lines, \
	"ticket-status-all.txt" using 1:5 ti "new (no owner)" with lines, \
	"ticket-status-all.txt" using 1:($2+$3+$4+$5) ti "Sum" with lines