Multi-series grouped bar charts have one or more linear side-by-side groups of horizontal bars, with a different color for each series.
Our Global Sales demo charts show groups of product quantity totals sold in US, France and UK, in three different years. The multiple series are the US, France and UK countries. The values for each year are 2007, 2008 and 2009. Remark the vertical X axis is a category axis: year values are distributed at equal intervals on the axis. Quantity value bars for each year are displayed side-by-side for each country. All bars for a specific country have a different distinct color. First country uses the first palette color, second country the second palette color and so on.