6m QRP FT8 (Wednesday)

This morning, my 2.5W FT8 to the vertical omni antenna is on 6m.  I am wondering, if as on 2m, I am tapping into some sort of troposcatter mode?

As well as the usual G spots I have been spotted in Sicily and Eire. FT8 works with signals even weaker than CW. I guess it could also be aircraft reflection?

UPDATE 1245z: 37 stations have spotted me on 6m FT8 and I have spotted 23. I think this is Es.

UPDATE 1800z: 52 stations have spotted me and I have spotted 31 stations here. See map for stations spotting my QRP 6m FT8 today.