When working with a chart in Excel, you may need to move the X-Axis labels from bottom to top. Please see below for details:
Step 1: Right-click on the X-Axis, and select "Format Axis" in the dialog box;
Step 2: In the "Format Axis" window, select "High" in the Label Position section;
Step 3: The following is the chart with the X-Axis on the top.