And what that means is if hemoglobin is less likely to be bound to oxygen at a partial pressure of 20 mercury, which is the partial pressure inside our exercising tissue, this point on the blue curve will have a lower Y value than the red curve. And what that means is more of the hemoglobin will basically unload and release that oxygen to the tissue. So the red curve describes a Y coordinate of, let's say about 00:32. And this describes the blue curve describes a cordon point of about 0.1. There's a difference of 22% according to this graph. And that means 22% of the hemoglobin will unload the oxygen in size.