\begin{table}%t6
\caption{\label{tabmed}Average abundances $\langle[X$/H$]\rangle$ for stars with planets and for comparison sample stars.
For each element the rms around the mean and the abundances difference between the two samples (101 and 93 respectively) are also listed.}
%\centering
\par
\begin{tabular}{lccccl}
 \hline\hline
Species &       \multicolumn{2}{c}{Planet-hosts} & \multicolumn{2}{c}{No-hosts}   & Average   \\
        (X) &       $\langle[X$/H$]\rangle$ & $\sigma$ &  $\langle[X$/H$]\rangle$ & $\sigma$ &  diff.   \\
                \hline
        Si      &       0.09 & 0.20 & $-$0.13   & 0.24 &0.23\\
        Ca      &      $-$0.01 & 0.19 & $-$0.22 & 0.22&0.22\\
        Ti      &       0.15 & 0.17 & 0.01      & 0.19  &0.14\\
        Sc      &       0.16 & 0.20 & $-$0.08   & 0.24 &0.25\\
        V       &       0.21 & 0.24 & 0.08     & 0.26  &0.13\\
        Cr      &       0.04 & 0.22 & $-$0.18  & 0.25 &0.22\\
        Mn      &       0.15 & 0.33 & $-$0.14  & 0.33 &0.29\\
        Co      &       0.16 & 0.25 & $-$0.04  & 0.26 &0.20\\
        Ni      &       0.09 & 0.24 & $-$0.17  & 0.27 &0.26\\
        Na      &       0.12 & 0.24 & $-$0.17  & 0.26 &0.29\\
	Mg	&	0.19 & 0.19 & $-$0.05  & 0.21 &0.23\\
	Al	&	0.19 & 0.21 & $-$0.01  & 0.23 &0.18\\
\par
	\hline
\end{tabular}
\end{table}