The Gray sheet is the Relative Acceleration sheet.

In a normal market, the ball stays between the Green circle and the Blue.

In this representation, the ball never goes out beyond the Blue circle and is pretty much in a circular quarterly orbit around the Market Blackhole.

If you imagine an X-Y plane that is flat or parallel with the circles, then the quarterly positions are the quadrants of the X-Y plane.

The Z axis is pointing out of the Market Blackhole towards you.

Below are a few rendered images of different views of the Market Blackhole.