\begin{table}%t6
%\centering
\par
 \small  \caption{RR: partial results. We list the mean $\mu$ and the
    corresponding standard deviation $\sigma$ of the difference
  Committee-SSPP for each of the different stellar temperatures and metallicity
  ranges.}  \label{t_Partial2RR}
    \leavevmode
        \begin{tabular}[h]{ccrrr}
        \hline\hline  
        $T_{\rm eff}$ & ${\rm [Fe/H]}$ & $\mu_{\rm [Fe/H]}$& $\sigma_{\rm [Fe/H]}$& $E_{\rm [Fe/H]}$\\ 
        \hline  
$<$$ 4500$    &    $<$$ -2.5$  & $0.9062$ & $0.8550$ & $0.9062$\\
$<$$ 4500$    & $-2.5,-2.0$  & $0.2322$ & $0.1414$ & $0.2322$\\
$<$$ 4500$    & $-2.0,-1.5$  & $0.3464$ & $0.3664$ & $0.4503$\\
$<$$ 4500$    & $-1.5,-1.0$  & $0.1196$ & $0.1779$ & $0.1667$\\
$<$$ 4500$    & $-1.0,-0.5$  &$-0.1419$ & $0.1634$ & $0.1732$\\
$<$$ 4500$    &    $ > -0.5$  &$-0.4616$ & $0.1322$ & $0.4616$\\ 
\hline  
$4500,6500$ &    $<$$ -2.5$  & $0.1183$ & $0.1770$ & $0.1574$\\
$4500,6500$ & $-2.5,-2.0$  &$-0.0043$ & $0.1608$ & $0.1144$\\
$4500,6500$ & $-2.0,-1.5$  &$-0.0133$ & $0.1636$ & $0.1219$\\
$4500,6500$ & $-1.5,-1.0$  &$-0.0435$ & $0.1683$ & $0.1303$\\
$4500,6500$ & $-1.0,-0.5$  &$-0.0294$ & $0.1291$ & $0.0999$\\
$4500,6500$ &     $>$$ -0.5$  &$-0.1416$ & $0.1207$ & $0.1456$\\ 
\hline  
\end{tabular}
\end{table}