I'm curious what the margin of error is for these temperature readings? ... and what is the standard deviation of the '81-'10 temperature average? ... I checked Dr Spencer's web site where this graph is posted and he ignores theses matter there ... smart guy like you has fact-checked this against the published literature so I'm sure you have this information at your finger tips ...
I'm also curious as to the climatological relevance of this "running, centered 13-month average" ... that's strictly atmospheric dynamics and statistically insignificant ... and please explain how this data correlates to man-made CO2 output, which over the same 40 year period was very stable and slightly increasing ...