Stacked Area
Stacked Area Chart (also known as Stacked Area Plot) is a variation on a simple Area Chart with multiple areas stacked on top of each other. This allows comparing the evolution of the whole as well as contributions of individual parts over a period.
Stacked line series
Line series can easily be stacked by setting a single property: stacked. That’s it – the chart will take care of the rest.
Vertical ranges and guides
Any axis can contain vertical bands or guide lines added, with an optional label, to indicate certain ranges or points in the chart.
More about axis ranges and guides
Demo source