So far you seemed to be the most competent in the GFAC team, who else
think different than you and what are the reasons behind such an
opinion? Can we involve him/her in this open discussion?
Maybe that member should visit an average club and see how these
barographs and barograms are treated...

/Janos

Marc Ramsey wrote

My is opinion is (and has been for years) that the IGC should switch
over to using geometric altitude, which would allow use of GPS-derived
altitude with appropriate error bars. But, my opinion is not that of
the majority of members of the IGC, or even GFAC, at this point.