SPC Graph Area
The window displays a line chart of the SPC values collected for a specific process variable. It includes two graphs. The top graph is a plot of X-bar values and the bottom is a plot of the associated range values. The X-axis is the time at which the SPC values were recorded. The number of values graphed may be a subset of the total collected.To view the maximum value for a graph, click anywhere on the far right-hand side of the window, outside of the graph borders but within the top and bottom lines of the desired graph. To view the minimum value of a graph, click anywhere on the far left-hand side of the graph, outside of the graph borders. To view actual values, click in the middle of the graph area.