So according to the 1951 pattern, there was another 5.8M last night, which could be considered as part of the trio

It's confusing the way they measure the quakes - whereas CWB claimed the previous peak quakes were 5.8 and 6.0, the US seismic bureau measured them as 6.1 and 6.4 - which one is right?

Given the level of damage and CWB's embarrassingly wrong pronouncements so far, I'm going with the US measurement, which would make last night's also a 6.1

That gives us three quakes over 6 - which would match the 3 x 7M of 1951

They are also reporting 94 fore-shocks

Frustratingly, it's very hard to find research papers on foreshocks - they all seem to be about big earthquakes and their aftershocks - which I can't really see the point of

Surely it's far more important to be studying the pattern of fore-shocks - that way you have some hope of working out what's coming instead of endlessly writing papers about the aftermath which are of no use to anyone