The X-axis, which is the horizontal axis, on most Excel charts does not use numeric intervals like the vertical Y-axis does. The X-axis contains either strings of text or a date under each set of data ...

So, select any cell in your formatted Excel table, and in the Insert Tab on the ribbon, click the top half of the split ...

Change an Excel chart’s minimum axis value for a cleaner look Your email has been sent If you have uneven distribution of data in your Excel chart, here is a better way to change the automatic axis ...