We now have about 20% saturation of hemoglobin. And finally, if we drop the PH and we increase the concentration of carbon dioxide to about 40 mercury, then at a partial pressure of 20 mercury for oxygen, inside the exciting tissues, we're going to have 10% saturation of hemoglobin. And so, these will be the percentages of hemoglobin that are going to be able to unload and release that oxygen. So, in this particular case, the black curve, tells us 98% -32% gives us 66% of the hemoglobin will be able to release the oxygen to the tissues, in the case of the absence of carbon dioxide, but a lower PH. So a higher concentration of hydrogen ions, we're going to be able to unload 98 -21 or 77% of that oxygen. So, 77% of the hemoglobin will unload and release that oxygen, and finally, for this case, in the presence of carbon dioxide, and a lower PH meaning a higher concentration of H plus ions, 88% of the hemoglobin will be able to unload that oxygen.