  We make a comparison of the predicted effective weak mixing angle, the Z-on
resonance asymmetries and the W-boson mass to the LEP and SLD data at their
present status. We find that the predicted MSSM values for the effective weak
mixing angle are in agreement with the LEP+SLD average value for a ``heavy''
SUSY breaking scale while we observe an agreement with SLD data in the case of
a ``light'' SUSY breaking scale. The resulting values for the W-boson mass and
for the electron left-right asymmetries are compatible with CDF,UA2,DO and LEP
data respectively. Unexpectedly we find that the supersymmetric QCD
contributions to the Z-observables tend to vanish everywhere in the M1/2-M0
plane. Furthermore, values of M1/2 which are greater than 500 GeV are favoured
by the MSSM if one considers the current experimental value for the strong
coupling.
