Thanks Glen, I have one timing slip with SP and three with ST. I didn't
want to muddy up the question about that till I got the answer about ST.
Doug Odom in big ditch
Glen Barrett wrote:
>Heres the answer to the ST that should be SP from the guy that programmed the
>system.
>Glen
>----- Original Message -----
>From: Rice, James
>To: Glen Barrett
>Sent: Tuesday, August 28, 2007 11:58 AM
>Subject: RE: question
>
>
>That was a miss-abbreviation that should have been SP, (it was corrected on
>some timing slips, towards the end of the week). SP stands for Station
>Pressure, which means un-corrected barometric pressure. Barometers measure
>air pressure, but since air pressure also varies by altitude, they are
>corrected to read equivalent sea level values. Station Pressure is the
>actual, un-corrected value the instrument read. Station Pressure is needed to
>calculate the density altitude that is also printed on the timing slip.
>
>James Rice
>ChronoLogic Timing
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