So this is going to be what? 90 plus 60 is 150. 150 plus 4 plus 5 is 159. 159 divided by 2 is equal to, 150 divided by 2 is 75. 9 divided by 2 is 4 and a half, so this would be 79.5. So it's one kind of way of thinking about the middle of these numbers. Another way is obviously the arithmetic mean, where you actually take the arithmetic mean of everything here.