Thanks Olton Pete. I must admit I don't have the time to check individual a/c types and flight configurations which is why I note the assumptions and qualify some numbers. I don't even attempt QR and EY. For example, if QR in Sep. was all A332s, then the LF was c 80%. If half the flights were A333s, it drops to around 74% and now we've got some B777s it's more complicated.
My overall impression for the ME3 was that the LF for EK was fine, less so for the other two, but Sep. may not be a typical month. Still, with a/c upgrades and talk of a 4th EK flight, I guess they must be satisfied with yields.