Adrian,

> Are you allowing for altitude ?

Nope, forgot all about that. :-|

I'm 7 stories up, and allowing for the building being just a tiny bit above
sea level (I'm from the Netherlands, which is almost /under/ sea-level :-) )
I should be at between 18 and 23 meters up.

> I'm at about 100M above sea level, and I was surprised by the drop over
> that height.

Do you perhaps still know what the difference in pressure was for you ?
Currently it looks that my 20 meters altitude translates to almost 8 points.

Regards,
Rudy Wieser

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