SeriesType
Determines the type of [[Series]].
Area; used by both area and area 3D charts.
Area = 0
Bar; used by both bar and bar 3D charts.
Bar = 1
Line; used by line, line 3D, and stock charts.
Line = 2
Pie; used by pie, pie 3D, doughnut, and 'of pie' charts.
Pie = 3
Surface; used by surface and surface 3D charts.
Surface = 5