Create Contour map from Latitude, Longitude and Depth from CSV file

Hello experts,

This seems like a simple task but I couldn't wrap my head around it.

I have a simple CSV file with Latitude, Longitude and Depth values as follows.

What I want is to create a contour map using these data. How to do this?

TIA!

[darova]

Use griddata to create 2D matrix

Use contour to create contour

[Jake]

Thank you!