This screen shows 2 user defined Histograms, Each graph fills from left to right as new values arrive and older values are shifted right. As a result - the graph depicts sensor values over a user defined time period from several seconds to several hours. Bar Graph updates are in real-time. In this screen, RPM and Manifold Pressure are being plotted with increasing RPM causing an increase in Manifold pressure. Sensor values come from C950 via serial port.