This is a graphic display of levels at three tanks at a remote location in South Australia. The level values, and battery status are uploaded via a Telstra 3G connection, three times per day. These are live values as the data is updated. The level at the feeder tank has not been enabled in to the system as yet. Based on the known dimensions of the tanks, the volume of water in each tank is calculated based on depth. The total volume being the sum of the three tanks.