Es to northern Europe

In an earlier post I mentioned that more northerly stations seemed to be more predominant later in the Es season. This is based on nothing scientific, but 6m FT8 RX results today are predominantly from northern Europe.

If this observation is true I have absolutely no idea why. Regarding E layer propagation, I am sure there is a lot still to learn, especially regarding "real DX", by which I mean really long distances outside Europe such as to Japan, the Caribbean or North America. 

In my view multi-hop Es does not fit these "real DX" cases. I may be wrong.