\begin{table}%t3
%\centering
\par
\caption{\label{table:mags}PSF photometry and photometric errors of the three T-dwarf candidates, in magnitudes.}
\begin{tabular}{l l l l l l l l l l l l l}
\hline\hline
 Object  &  $z^\prime$ & $\sigma_{z^\prime}$ & $J$ & $\sigma_{J}$ & $H$ & $\sigma_{H}$ & $K_{\rm s}$ & $\sigma_{K_{\rm s}}$ & CH$_4$off & $\sigma_{\rm {CH_4off}}$ &  CH$_4$on &  $\sigma_{\rm {CH_4on}}$\\
\hline
\object{IC348\_CH4\_1}&  23.32      &   0.07  &  21.62 &  0.04  &  20.95 &  0.07  &  20.22 &  0.06  &  20.52 &  0.04  &  21.06 &  0.08 \\
\object{IC348\_CH4\_2}&  $\ge$25.7 &   --     &  22.51 &  0.07  &  21.65 &  0.08  &  20.10 &  0.04  &  20.59 &  0.04  &  21.37 &  0.10 \\
 \object{IC348\_CH4\_3}&  23.85      &   0.10  &  22.02 &  0.07  &  21.02 &  0.07  &  19.94 &  0.05  &  20.17 &  0.03  &  20.66 &  0.06 \\
\hline                                                                                               \end{tabular} 
\end{table}