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Table 2

Statistical uncertainties from null map for high Galactic latitudes > 30).

Line TYPE 1 (at 10′) xGNILC (at 10′) TYPE 2 (at 15′) xGNILC (at 15′)
(KRJ km s−1) (KRJ km s−1) (KRJ km s−1) (KRJ km s−1)
J=1→0 4.3 0.24 0.43 0.15
J=2→1 0.91 0.13 0.098 0.072
J=3→2 0.91 0.053

Notes. For this comparison, we smooth Planck TYPE 1 maps with 10′ apodized beam at Nside = 1024 and compute the noise uncertainty. Similarly, for comparison with Planck TYPE 2 maps we downgrade the TYPE 2 null maps to Nside = 1024 and smooth the xGNILC null maps with a 15′ beam. While these numbers are computed directly from the null maps, they are consistent with uncertainty computed from the simulated xGNILC noise maps.

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