And then we have 9 data points here. We have 9 data points, so we'll divide by 9. And what is this going to be equal to? 3 plus 2 plus 1 is 6. 6 plus, let me just add, so these are 6. 5 plus 3 plus 4 is, that's 12. And then 5 plus 6 plus 7 is 18.