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Fig. 6


Shifts in the best-fit values of parameters when one considers the multipole range either below or above different values of split. This uses the PlanckTT+τprior data combination, with > 30 computed using plik_lite. The different lines correspond to restricting the data to <split (blue), 30 < <split (green), and >split (orange). These shifts are described in Sect. 5.1. One can see here that excising the < 30 region moves the low- parameters closer to the high- parameters, as discussed in detail in Sect. 5.3. Error bands are the ± 1 and ± 2σ scatter in the simulations away from the input fiducial model. We have chosen to plot this quantity as opposed to posterior constraints on these parameters (which is different because of our prior on τ) because it is these bands that are appropriate for comparing the blue and orange lines against each other. We note that this has the perhaps counter-intuitive effect of having the error bands in the τ panel increase as more data are added. None of the local “spikes” are found to be significant, as can be seen from the bottom panel of Fig. A.1.

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