I created this to get some data for a fun project I'm working on. The reason the left and right sides have a bit more yellow than top and bottom is because of the aspect ratio; the boundary is longer on the X axis than the Y axis.

This was done in Python using Pygame. It wasn't actually a lot of code; only 55 lines total (without empty lines).

I didn't include the numerical data for simplicity and presentation sake.

Edit: You can also just about see a faint outline (like a diagonal chequerboard pattern) of crossing lines... pretty interesting, honestly.