I didn't say I didn't/did believe in god. I just don't know. That's bang smack in the middle of the diagram, no?
There is no "bang smack in the middle of the diagram" because the 4 quadrants cover every possible positon.
Your position as stated is either agnostic atheism or agnostic theism with you concealing your belief. Knowledge and belief are seperate things, so not knowing isn't a complete answer.