PCO2 of atmospheric air at sea level
0.3
PO2 of “deoxygenated” venous blood
40
PO2 of systemic tissues
40
PCO2 of “deoxygenated” blood
45
PO2 of alveolar air
105
PO2 of atmospheric air at sea level
159
PCO2 of alveolar air
40
PO2 of “oxygenated” blood
100
PCO2 of “oxygenated” blood
40
PCO2 of systemic tissues
45
PO2 of top of Mt. Everest
53