Unique successfully authenticated users per day against the Australia-level eduroam RADIUS proxies
For a closer look download the attached SVG graph.
The /var/log/radius.log* files are cleaned up using a series of awk programs (attached). They are then reduced to unique daily use based on the CLI reported by the access point (in all cases seen to date this is the MAC address of the supplicant) and a daily histogram created. The histogram data is plotted using Gnumeric.