I really have no science behind my answer but my guess is that the psi in a static system (no flow) would be the same value as the same amount of water is being held back in the tubing so the mass is the same at the same height. If you need an exact answer, someone here may know but i did find a website you might try: http://www.physicsforums.com/showthread.php?t=325576
Either way, let us know the right answer when you get it please.
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