  The neutrino signal from SN1987A is analysed with respect to spin-flavour
oscillations between electron antineutrinos, $\bar{\nu}_{e}$, and muon
neutrinos, $\nu_{\mu}$, by means of a maximum likelihood analysis.
  Following Jegerlehner et al. best fit values for the total energy released in
neutrinos, $E_t$, and the temperature of the electron antineutrino,
$T_{\bar{\nu}_{e}}$, for a range of mixing parameters and progenitor models are
calculated. In particular the dependence of the inferred quantities on the
metallicity of the supernova is investigated and the uncertainties involved in
using the neutrino signal to determine the neutrino magnetic moment are pointed
out.
