\begin{table}%t1
\caption {\label{tab1}Observed and dereddened Str\"omgren indices for 
HR~6000 and 46 Aql.}
%\centering
\par
\begin{tabular}{rrrrrrrrrrr}
\hline
\hline
\noalign{\smallskip}
\multicolumn{1}{c}{Star} & 
 \multicolumn{1}{c}{$b-y$} &
 \multicolumn{1}{c}{$m$} &
 \multicolumn{1}{c}{$c$} &
 \multicolumn{1}{c}{$\beta$} &
 \multicolumn{1}{c}{$E(b-y)$} &
 \multicolumn{1}{c}{$(b-y)_{0}$} &
 \multicolumn{1}{c}{$m_{0}$} &
 \multicolumn{1}{c}{$c_{0}$} &
 \multicolumn{1}{c}{\teff(K)} &
 \multicolumn{1}{c}{\logg} 
 \\
\hline
\noalign{\smallskip}
\par
HR~6000&$-$0.030 & 0.116 & 0.521& 2.750& 0.031&$-$0.061& 0.126 & 0.506 &13~799~$\pm$~150& 4.27~$\pm$~0.05 \\
       &$\pm$0.003& $\pm$0.003&$\pm$0.003\\
46 Aql  &$-$0.019 & 0.094 & 0.641& 2.729& 0.035&$-$0.054& 0.105 & 0.634 &12~763~$\pm$~150& 3.75~$\pm$~0.05 \\
        &$\pm$0.002& $\pm$0.002 & $\pm$0.002\\
\hline
\noalign{\smallskip}
\end{tabular}
\end{table}