The Grid Bar is a set of rows and columns. The first two columns represent the time period of a particular row of data. The other columns are the Entity.Attributes of the page that is currently selected. The rows are the set of the values for the different Entity.Attributes at a particular period of time.
Grid Bar can be used to select Trend Value information and placing a chart hairline. If require grid data can be saved or copied. Additionally its also possible to get statistical summaries of the columns in the grid.