Image from the peak channel of SPW 4 in our complete ALMA band 7 observations of the region around T CrB in 2024 (see Table 2), where we achieve the best angular resolution and sensitivity for an individual line. This SPW is centered (in LSRK) on the rest frequency of HCN v = 0 J = 4–3 line. The radio velocity shown in the upper right is relative to this line. The image is consistent with pure noise. The signal, for which this image shows the peak channel, is extracted from the annulus given by the two magenta circles around the image center, which are the same as in Fig. 3. The beam major and minor axes are 0.48 arcsec and 0.30 arcsec. We show this image in gray scale to draw attention the fact that this is a narrow-band image of a single spectral channel.