With increasing elevation and decreasing pressure, amount of effective oxygen in the air descreasing too. On sea level there's about 20,9% of oxygen in the air. This datafield will show you a percentage of oxygen in actual elevation (use at your own risk).</p><p></p><p>You can set to show real value of oxygen (max 20.9 at sea level) or percentage from this value (for example 1000m = 18.4 = 88% from max). If you like, you can check the effective oxygen information on webpage http://www.higherpeak.com/altitudechart.html </p>
v3.4.0 - Repaired calculation formula (because of bug in some cases), code edit
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