turned out that these more deformed barriers are indeed mostly smaller than the first ones and decrease with increasing $Z$. Only in Cf isotopes with $N=134-160$ there were some second saddles (at $\beta_{20}\approx 0.9$) higher than the first one by at most 0.5 MeV. However, even those saddles were lowered by at least 1 MeV after including the mass-asymmetry. Therefore, we have reasons to believe that the range of $\beta_{20}$ in (4) is sufficient for knowing the height of the fission barrier in the whole studied region.

Results and discussion
======================

In the present paper we have systematically calculated fission-barrier heights $B_{f}$ as the energy difference between the saddle point and the ground state. The saddle point is defined as the minimum over possible fission paths of the maximal energy along the path. Let us emphasize that the calculations presented here have been performed without adding any zero-point vibration energy. We have included 1305 heavy and superheavy nuclei with proton numbers $98\leq Z \leq 126$ and neutron numbers in the range $134\leq N \leq 192$, with the smallest $N$ for a given $Z$ increasing by one with every step in $Z$. All obtained barriers have been collected in Table \[bartot\]. 