Planck 2015 results
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Table 8

Masks used for the high- analysis.

Mask
Frequency
[GHz] Temperature Polarization

100 ............ T66 P70
143 ............ T57 P50
217 ............ T47 P41

Notes. Temperature and polarization masks used in the likelihood are identified by T and P, followed by two digits that specify the retained sky fraction (percent). As discussed in Appendix A, T masks are derived by merging apodized Galactic, CO, and extragalactic sources masks. P masks, instead, are simply given by apodized Galactic masks.

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