arexxd/web/rh-12h.cgi

#!/bin/sh
echo "Content-type: image/png"
echo
D=/var/log/arexxd
exec rrdtool graph - \
	--start 'now-12h' \
	--end 'now' \
	--title "Relative Humidity" \
	-w 720 -h 600 \
	-x MINUTE:10:HOUR:1:HOUR:2:0:%H:%M \
	-y 5:2 \
	--right-axis 1:0 --right-axis-format "%3.0lf" \
	--legend-position east \
	--units-exponent 0 --lower-limit 0 --upper-limit 100 --rigid \
	DEF:a=$D/sensor-catarium-rh.rrd:rh:AVERAGE 'LINE1:a#cc0000:Catarium'