The element puts into brackets the flight height, or the height corresponding the pressure in the air plane's cabin respectively. The value is given as a real number in metres.
<dateofflight>, <surfaceintervalbeforealtitudeexposure>, <totallengthofexposure>, <transportation>, <wayaltitude>
(see also <exposuretoaltitude> and <dive>)
<!-- pressure in the cabin corresponds to a (flight) height of 2000 m -->
<altitudeofexposure>2000.0</altitudeofexposure>