Notes:Groundspeed was 121 knots (as stated by the green GPS on the right). The GPS inticates km/h (usually used for gliders in Germany), if you recalculate it, it shows 121 knots.
During this flight we experienced 40 knots tailwind at FL60 within airspace C over Hamburg EDDH. It took us 80 minutes from EDLP to EDHK (reverse leg was 150 minutes *g*)