Top: same as Fig. 7, but instead of computing the (top panel) and (bottom panel) spectra from the 353 GHz cross-correlation between DetSet1 and DetSet2, we compute them from the cross-correlation between the HalfRing half-differences for each detector set, i.e., (353_DS1,HR1−353_DS1,HR2)/2 × (353_DS2,HR1−353_DS2,HR2)/2. The 3σ expectations from Planck inhomogeneous white-noise Monte Carlo simulations are represented as light blue shaded areas.