  Weyl 0- and 1-cocycles of canonical dimension 6 in six dimensions, which were
computed earlier in ref.\cite{bonorabregolapasti1986}, are recalculated from
scratch. The analysis yields five Weyl invariants (0-cocycles), instead of
four, and the same four non-trivial 1-cocycles (possible trace anomalies), like
in that reference (up to the correction of one typo)
