# The up to date rms cmb temperature variation

I am searching online the most up-to-date result/data of cmb temperature variation, i.e. $\sqrt{<\Delta T^2>} \mu K$

I sort of know it's of order $10\mu K$ and have seen it on an old first-year COBE data paper: Structure in the COBE differential microwave radiometer first-year maps

Anyone please direct me to the up-to-date paper?

• On what angular scale? – Rob Jeffries Oct 14 '16 at 20:34
• @RobJeffries based on any up-to-date experiment results, whatever their resolutions are. – HanaKaze Oct 15 '16 at 1:46

Note the yaxis is in the conventional CMB units of $l(l+1)C_l/2\pi$, see here for an explanation of the CMB power spectrum. The translation to simple temperature fluctuations as a function of angular scale is not straightforward, but the plot below corresponds roughly to rms temperature variations of 20 $\mu$K on large angular scales, rising to $\sim 80\mu$K on 1 degree scales, before falling again.