And what that means is it shows that as we begin to increase the concentration ever so slightly, there is a sharp increase in that curve until it levels off and then essentially becomes flat. Now, what that means is as soon as we begin to add a tiny amount of that oxygen into our mixture, all that oxygen begins to bind onto the myoglobin. Because the myoglobin has a very high affinity for that oxygen. It binds that oxygen strongly. And that's why we have this sharp increase in that curve immediately after we begin increasing the concentration of that oxygen. So we see that at a partial pressure of 2 million meter of mercury.