Table 1: Type dependent mean values and 1 $\sigma $ rms scatter of the central ages, metallicities ([Z/H]) and $[\ensuremath {\alpha /{\rm Fe}} ]$ ratios.
Type N <age> rms (age) <[Z/H]> rms ([Z/H]) $<[\ensuremath{\alpha/{\rm Fe}} ]>$ rms ( $[\ensuremath {\alpha /{\rm Fe}} ]$)
    [Gyr] [Gyr]        
E 11 10.5 3.1 0.24 0.06 0.26 0.06
E/S0 7 11.2 4.4 0.12 0.17 0.27 0.04
S01 7 9.6 1.3 0.14 0.06 0.21 0.06
S02 5 2.6 0.6 0.34 0.16 0.18 0.05


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