Munin contributed plugins

    echo "graph_title WiFi signal and noise"

    echo "graph_args --base 1000 -u 0"

    echo "graph_vlabel dB"

    echo "graph_info This graph shows the noise and singal levels of your WiFi devices"

    awk -F'[ :]*' '/:/ {

	echo "graph_title Wireless channel usage - $phy"

	echo "graph_args --base 1000 -r --lower-limit 0 --upper-limit 100"

	echo "graph_vlabel Channel usage by time in percent"

	echo "graph_info This graph shows the currently used channel of your WiFi device(s)"

	get_physical_interfaces_channel_descriptions "$phy" | while read -r channel description; do

		fieldname="channel_${channel}"

	echo "graph_title Wireless signal quality - $wifi"

	echo "graph_args --upper-limit 0"

	echo "graph_vlabel Signal and noise [dBm]"

	echo "graph_info This graph shows the signal and noise for all wifi peers"

	echo "noise.label Noise floor"

	echo "noise.draw LINE"

	echo "graph_title Wireless signal quality ranges - $wifi"

	echo "graph_args --upper-limit 0"

	echo "graph_vlabel Signal ranges"

	echo "graph_info This graph shows numbers of peers with defined wifi signal ranges"

	lower="noise"

	for level in $SIGNAL_THRESHOLDS; do