Shown below is a comparison of the popularity of the girl name Diana and affiliated names. Prominent varying forms of Diana (#297 in 2014) are Cynthia (#491 in 2014) , Deana, Deandra, Deann, Deanna, Dee, Deedee, Dena, Dian, Diane, Diann, Dianna, Dianne, Dionne, Selena (#346) and Tiana (#554) .
On the Home tab, in the Alignment group, click Merge and Center. The cells will be merged in a row or column, and the cell contents will be centered in the merged cell. To merge cells without centering, click the arrow next to Merge and Center, and then click Merge Across or Merge Cells. Note: If the Merge and Center button is unavailable, the selected cells might be in Edit mode, or the cells might be inside an Excel table. To cancel Edit mode, press ENTER.
Instead of Merge Cells use Center Across Selection to accomplish the same visual result without hog-tying copy/paste/chart capabilities. Don't put your time series data side by side, because you will have to stack it to draw a control chart.