Histogram of the simulated intensity fluctuations of the CMB measured as the fluxes of the LMC and SMC (left and right panels, respectively) at 5 mm (60 GHz), for 5000 random positions on the sky. The histograms have been normalized to their peak value, and the bin size is 5 × 10^-4 MJy/sr). The solid vertical line in each panel corresponds to the measured excess intensity at this wavelength, while the dashed lines give the 3σ error estimates to either side of this measured excess.