  New ages are computed for the stars from the Edvardsson et al. (1993) data
set. The revised values are systematically larger toward older ages (t>4 Gyr),
while they are slightly lower for t<4 Gyr. A similar, but considerably smaller
trend is present when the ages are computed with the distances based on
Hipparcos parallaxes. The resulting age-metallicity relation has a small, but
distinct slope of about 0.07 dex/Gyr
