Planck 2013 results
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Table 17

χ2 statistics based on the wavelet bispectrum reconstruction yi statistics for the foreground cleaned data map.

Method DOF χ2 σ

C-R ........... 874 690 740 87 0.074
NILC ........... 883 682 731 83 0.045
SEVEM ........... 858 682 731 83 0.070
SMICA ........... 878 682 732 83 0.058

Notes. Considered data map: combined map cleaned with C-R, NILC, SEVEM, and SMICA.

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