Planck 2018 results
Open Access

Table 8.

Masks used for polarization analysis at 70 GHz.

Mask fsky [%]
R0.6 … 21.4
R0.7 … 27.1
R0.8 … 32.8
R0.9 … 37.9
R1.0 … 43.5
R1.1 … 48.2
R1.2 … 52.2
R1.4 … 58.1
R1.8x 62.4
R2.2x 66.6

Notes. Mask R2.2x is used for the foreground cleaning procedure, while R1.8x is used for cosmological parameter estimation.

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