Oxygen Saturation: peripheral vs arterial

[BojanaVelichkovska]

Hi,

My question is: Which tables of the dataset are the peripheral and the arterial oxygen saturations located in, and which are their corresponding labels?

The vitalPeriodic table has a sao2 measurement (which I understand is arterial saturation). Still, then the description says that this is peripheral saturation, so if you could please let me know which one it is. And, consequently, where is the other type of oxygen saturation located?

Thanks