Abstract: A method and apparatus for displaying multiple communication network monitors having multiple monitoring intervals on a single graphical display. A user, through an input device, selects an object relating to a network monitor to be displayed on a graph and a processor retrieves network data from a communication network pertaining to the selected object. The display values for a line on the graphical display represented by the monitor are calculated by the processor such that, the line and any previously existing lines, are coherent in that the displayed parameters are consistent across the lines. Once the display values are calculated, the line is displayed on an output device. The user may additionally modify parameters associated with the monitor or add or delete a monitor. If the user modifies a parameter, the processor modifies the parameter and updates the display.