Surface plot for coordinates (x,y,z) problem

I have a problem when plotting a 3D surface plot. see attachment,

I want on 5 specific x,y coordinates a peak of a certain value. When I plot the code it seems that my code is running fine, but At each peak there is a kind of weird curve, (like its compensating or controlling). I still want each peak but that it goes to zero immediately when it comes out.

How to fix this?

Hope my question is clear, if not let me know.

[Mathieu NOE]

hello

this is normal as it's related to the spacing between the input points (x and y delta). If you could reduce the spacing then also the mesh plot peaks would look narrower. but a mesh plot cannot show a "nail" narrow peak.