A medical system includes one or more medical body area network systems. The GGSP can receive data from one or more data sources, including a PMU or an IED, which can obtain power system related data and provide at least a portion of such data to the GGSP at a subsecond rate. The voltage controlled oscillator is configured to output a plurality of clock signals with different phases according to the current signals outputted from the phase and frequency charge pump circuits, and select at least one of the plurality of clock signals with different phases for sampling a data signal. An elongated bit line is provided on, and electrically contacting, the bit line contact plug remote from the sub active region. The weights correspond to uncertainty of motion estimation. If a leak develops in either wall of the sump, a corresponding drop in the fluid level of the reservoir will occur.