Excel 3d plot without add-in

Is this plot realizable in Excel without any additional software?

3d-640.png

Sort of. Excel cannot do a true 3D scatter where all three axes are numeric. Excel's built in surface plot can only do category type data for the X and Y axes. The specific surface you show looks like it could be relatively easily created in Excel as long as you pay careful attention to spacing the X and Y data so that it will show up on the chart correctly. However, if you need true 3D surface/scatter plotting, you need different software.