  In this letter we present the results of our numerical simulations for the
finite temperature electroweak phase transition using the SU(2)-Higgs model on
four-dimensional lattices at $m_H \approx 80$ GeV. The temporal extension
$L_t=2$ is used for asymmetric lattice spacings with an asymmetry parameter
$a_s/a_t \approx 4$. The measured thermodynamical quantities (interface
tension, jump of the order parameter and latent heat) suggest that the phase
transition is of very weakly first order.
