Grid Line to curve help

Good day,
I would like to ask for guidance regarding on how to convert a linear grid to a curved grid.
My issue here is that the lines were the lists are shifted have sharp transitions. What is the best way
to convert it to a curve?

Practice Mesh.3dm (162.3 KB) (13.7 KB)

Please upload GH file with internalised data. or, upload Rhino3dm file.

I just uploaded it. thanks Its in the main post

Like this? (20.0 KB)

@HS_Kim wow thanks a lot! I’m still new to GH, I’ll study the file more.