What is the approximate partial pressure of oxygen on top of mount everest?

In any case, there are less air atoms exhibit at the elevations of Mt. Everest thus the fractional weight of oxygen is littler (260 mmHg x 20.95% = 54 mmHg) contrasted with the incomplete weight of oxygen at Mt. Whitney (500 mmHg x 20.95% = 104 mmHg). The oxyhemoglobin separation bend.