The 1013.25 mbar (101.325 kPa) pressure for altimeter settings is NOT
"arbitrary" as Kilopascal & Wiki write.  The standard altimeter setting for
worldwide altimeter settings was determined from the mean surface pressure
level.
Stan Doore
On Sep 3, 2011 11:36 AM, "Michael Payne" <metricmik...@gmail.com> wrote:

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