Planck 2018 results
Open Access

Fig. 31.


Relative weights of each frequency cross-spectrum in the TT (top), TE (middle), and EE (bottom) coadded spectra (see Sect. 3.6 for definitions). Weighting is obtained using the optimal mixing matrix for each spectrum individually. For each multipole , the elements of the matrix are rescaled so as to sum to unity, ignoring the ′ contributions. Each colour corresponds to the weighting of a given cross-spectrum. Sharp jumps in the plots are due to the multipole selection. The figure is very similar to the 2015 one, with small differences being the result of refinements in the foreground and systematics models.

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