Constraints on ΛCDM parameters from: SPT data from Story et al. (2013) in pink; PlanckTT ℓ> 800 in green; and WMAP in blue. Except for the latter data set, which has no sensitivity to τ, all others have been combined with a prior τ = 0.07 ± 0.02. The significance of parameter shifts between these three approximately uncorrelated data sets can be roughly calculated using Eq. (1). We find no strong evidence of discrepancies, with SPT and WMAP agreeing at the 1.7σ level, Planck ℓ > 800 and WMAP agree even better at 1.1σ, while Planck ℓ> 800 and SPT agree with each other at 2.1σ. Also plotted in orange is Planckφφ with θ_∗, ω_b, and n_s fixed to the Planck best-fit values. This data set, across the two parameters it constrains, is also not in significant tension with the others. Sect. 6 discusses these comparisons in more detail.