The product dimensions indicate a depth of around 31cm. I'm not quite clear where this is measured. When you push the monitor against the wall, is the screen 31cm away from the wall? From the pictures and numerous review videos, that doesn't seem to be the case to me?! Or in other words, could someone tell me how far the screen is from the wall when you push the monitor all the way to the wall (in the middle and on the outer edge)?