Stacked Area Chart is plotted in the form of several area series stacked on top of one another. The height of each series is determined by the value in each data point.
A typical use case for Stacked Area Charts is analyzing how each of several variables and their totals vary, on the same graphic.
The Stacked Area Chart type only works well when more than two series are present. When only one series is plotted, such a graph becomes a simple Area Chart. At the same time, the number of series in a Stacked Area Chart should be kept moderate as too many series may well hinder its legibility.