  We compared the Planck 2018 data on the large-scale anisotropies in the
cosmic microwave background to the results obtained in the slightly anisotropic
ellipsoidal universe. We focused on the quadrupole temperature correlations to
better constrain the eccentricity at decoupling and the direction of the
symmetry axis. We found that the quadrupole TE and EE temperature correlations
in the ellipsoidal universe are still in reasonable agreement with the Planck
2018 data. We suggested that an experimental estimate of the average
large-scale polarisation by the Planck Collaboration could confirm or reject
the anisotropic universe proposal.
