And so there's a couple of ways to think about it. Here they actually give us the confidence level, and the reason why that corresponds to a tail probability of.025 is if you take the middle 95% of a distribution, you're going to have 2.5% on either end. That's going to be your tail probability. So that's all that's going on over there. So we're going to be in this column right over here. And which degree of freedom do we use, or degrees of freedom? Well, it's gonna be four degrees of freedom.