Fig. 47
Joint estimates of primordial amplitude As and τ for the data sets indicated in the legend. For low-ℓ estimates, all other parameters are fixed to the 2015 fiducial values, except for the dashed line, which uses the Planck 2013 fiducial. The PlanckTT+lowP estimates fall roughly half way between the low- and high-ℓ only ones.
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