So this tells me how many standard deviations is minus 20 away from the mean. It's 12 and 1 half standard deviations below the mean. And then I used that, and I just plugged it into essentially this formula to figure out the height of the function. So let's say at minus 20, the height is very low. At minus 5, well, let's say at minus 2, the height's a little bit better. The height's going to be someplace, it's going to be like right there. And so that gives me that value.