I have data in the form of longitude, latitude, and value. they are all list.
how can I plot contour plot for such data?

I want to superpose white blue green and black contours but coloring and hatching the interior of the contours with the exterior of the contour staying empty instead of being white.

My question is in the title. I want to superpose white blue green and black contours but coloring and hatching the interior of the contours with the exterior of the contour staying empty instead of being white.
My contours