Ed Cesnalis Posted June 28, 2016 Report Share Posted June 28, 2016 Yeah one of those. I usually take O2 if I plan on being above 12,000'. Recently I bought a pulse-oximeter and learned that my O2 saturation on the ground is 95. I climbed to 12,500 and it was 95 I'll save the O2. Link to comment Share on other sites More sharing options...
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