So at a value of 2 mercury, a very small amount of oxygen, 50% of all the myoglobin in our body in that mixture will contain oxygen balance of the heme group of the myoglobin. And this means that myoglobin binds to oxygens very readily. It has a very high affinity for oxygen, and it also means the following. So, going this way, the oxygen is binding onto the myoglobin. But going this way, the oxygen is dissociating. Notice as we go this way, as we decrease the concentration of that oxygen, that myoglobin remains bound to that oxygen.