And, as someone pointed out in the blog comments, the 13-month moving
average doesn't appear to have been updated for the past few months. It will
presumably always be 6-7 months behind, but the last average point seems to
have been Dec 2014 and not April/May 2015.

Not a big deal because the current trend by eyeball does speak for itself,
but curious nonetheless - the moving average is obviously there for the
previous major temperature spike in 2010 so why not now? At a guess the
average must be up in the 0.25 - 0.30°C band by now, but not challenging the
2010 peak of ca 0.34°C as yet.