Table 6: Mean abundances and their respective dispersion for Fe, C, O, Ni, Sc, Si, Ba, Y, Zr and Sr for the F, normal A and Am stars.
Elements F stars $\sigma_{F}$ A stars $\sigma_{A}$
$[\frac{\rm C}{\rm H}]$ -0.01 0.06 -0.48 0.24
$[\frac{\rm O}{\rm H}]$ -0.11 0.18 -0.34 0.31
$[\frac{\rm Si}{\rm H}]$ 0.18 0.07 0.22 0.20
$[\frac{\rm Sc}{\rm H}]$ -0.02 0.04 -0.23 0.38
$[\frac{\rm Fe}{\rm H}]$ 0.07 0.09 -0.14 0.16
$[\frac{\rm Ni}{\rm H}]$ 0.09 0.11 0.11 0.28
$[\frac{\rm Sr}{\rm H}]$ 0.15 0.08 0.25 0.43
$[\frac{\rm Y}{\rm H}]$ 0.07 0.08 0.47 0.34
$[\frac{\rm Zr}{\rm H}]$ 0.04 0.34 0.46 0.33
$[\frac{\rm Ba}{\rm H}]$ 0.58 0.17 0.84 0.70

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