\begin{table}%T5
\caption{\label{t:reddenoi}Values for the reddening as determined in the present paper;
the three $E(B-V)$~values for each cluster derived from individual colours,
i.e. from~$(B-V)$, $(b-y)$, and~$(V-K)$~respectively, are also given.
The last line gives the adopted reddening.}
%\centering
\par
\begin{tabular}{llll}
\hline\hline
                    & NGC~2506         &      NGC~6134   &   ~IC~4651	   \\
\hline
${\rm [Fe/H]}$      & $-$0.20	       &       +0.15	 &   +0.11	   \\
$T_{\rm eff}$(ref.)   &  5000 K	       &      5000 K	 &  4500 K	    \\
$E(B-V)_{BV}$ &  $0.058\pm0.016$ & $0.355\pm0.005$ & $0.087\pm0.022$  \\
$E(B-V)_{\rm by}$ & 		  & $0.340\pm0.006 $& $0.082\pm0.015$  \\
$E(B-V)_{VK}$ &  $0.076\pm0.007$ & $0.388\pm0.005$ & 0.080     \\
\hline
$E(B-V)$ adop.      &  $0.073\pm0.009$ & $0.363\pm0.014$ & $0.083\pm0.011$  \\
\hline
\end{tabular}
\end{table}