And what I assume in this is I assume that within, essentially, a half a foot in either direction, if we're talking about feet. So to figure that out, what I did here is I took the value of the probability density function there, and I'll show you how I evaluated that. And then I multiplied that by 1. So it gives me this area. And I use that as an approximation for this area. If you really wanted to be particular about it, what you would do is you would take the integral of this curve between this point and this point as a better approximation. We'll do that in the future.