-------- Original-Nachricht -------- > Datum: Wed, 29 Jun 2011 13:10:41 -0300 > Von: Daniel Rocha <[email protected]> > An: [email protected] > Betreff: Re: [Vo]:Rossi responds to "movie professor" and Peter Ekstrom\'s > analysis
> Why are you subtracting the in Bologna if it was actually measured there? Its the altitude compensation. http://www.ehow.com/how_7716999_adjust-altitude-barometer.html a simple value like 1010.7 is not helpful itself. But, in relation to my long time working with air pressure values, I estimate an error of about 1 hpa is correct. Good barometers have an accuracy of about 0.2 hPa, but in reality it is a bit worse. Also, the exact height over sl for that location may be a bit different from 43 m. I looked it up at Google earth. There is perhaps another 5 m error or so. Its better to say: 1010.7 +/- 1 hPa I suppose, Rossi had a barometer there, I think it is included in the recording instrument collecting the temperature values. But we dont know if he looked up the value and if it was exacly compensated for altitude. -- Empfehlen Sie GMX DSL Ihren Freunden und Bekannten und wir belohnen Sie mit bis zu 50,- Euro! https://freundschaftswerbung.gmx.de
