'Python Csv integration in two dimensions

I currently have a csv file with data points of a 3D Potential map.

I am hoping to reduce the dimensionality to 1D (z vs Potential), but am really unsure how I would integrate in the x and y direction given a data set

My csv currently looks like:

And extends down something like 40,000 data points.

How would I go about doing the integration in python?

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