Hi Zoe,
thanks a lot for your reply.
I checked the ranking position through pws=0 and also by Moz's Ranktracker. In Moz it showed up ok but with &pws=0 it seemed to have dropped over several positions.
Please see my response to Cyrus if you're interested in what might have caused the drop.
I did not know that Google does not update meta data in real time.
Thank you very much !
Marc