Increase in the “statistical weight” (i.e., 1/σ2, where σ for each parameter comes from marginalising over the rest of the set) for a selection of ΛCDM parameters as a function of time. The bars represent the same divisions as in Figs. 11 and 12: pre-WMAP (green); WMAP1, WMAP3, WMAP5, WMAP7, and WMAP9 (blue shades); and Planck13, Planck15, and Planck18 (red shades).
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