RE: Barometric Pressure vs Altitude

["Migliore, Charles W" <Charles.W.Migliore@nspco.com>]

Thanks to everyone for the quick responses.

Charles Migliore RRPT 
charles.w.migliore@nspco.com

> -----Original Message-----
> From:	Bob Flood [SMTP:bflood@SLAC.Stanford.EDU]
> Sent:	Wednesday, June 30, 1999 1:36 PM
> To:	Multiple recipients of list
> Subject:	Re: Barometric Pressure vs Altitude
> 
> At 01:06 PM 6/30/99 -0500, you wrote:
> >Anyone know a quick thumbrule about barometric pressure vs altitiude, or
> >where to find one? 
> 
> I don't have a formula, but...
> 
> Surface pressure - about 1,000 mb (millibars)
> 
> Approximations:
> 850 mb - 5,000 ft
> 700 mb - 10,000 ft
> 500 mb	- 18,000 ft
> 300 mb - 30,000 ft
> 
> Hope this is useful.
> 
> ===================================
> Bob Flood
> Dosimetry Group Leader
> Stanford Linear Accelerator Center
> (650) 926-3793
> bflood@slac.stanford.edu
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