Barometric pressure at CERN. The elevation of the laboratory is about 439 m* above sea level.
Sea level pressure is calculated by adding 51.6 mbar to the pressure values below.
This value is calculated with the equation below which is derived from formulae 2.1 from ISO 2533-1975/Add.1-1985 (E/F/R), “Formulae used in the calculation of the relationships between geopotential altitude and pressure from −1450 to +11000 m above see level”.
= 1013.25 - ( 3.731444 - 0.841728E-4 * A2 ) ^ 5.255880
Where A2 is the elevation relative to sea level.
* measured with GPS receiver Garmin Vista HCx, elevation according GPS reading of the device with very good signal strength