>What "strange QBO behaviour"? Do you mean the QBO behaviour that has been observed since 1953?

No - if you look at the hockey stick (please have look!!) than you see that the irradiances for the 800 nm lines like the 798.83nm soared dramatically in the last 2 years. So with strange QBO behaviour I mean the last strange QBO in 2015/2016 which we discussed here this August. All this looks very very bad.