\begin{table}%t2 %\centering \par \caption{\label{tab:extinction}Extinction coefficients for PKS~0548--322 in the UVOT photometric bands.} \begin{tabular}{@{\extracolsep{\fill}} lll} \hline\hline\noalign{\smallskip} Filter & $\lambda (\AA)$ & $A_{\lambda}$ (mag) \\ \hline $V$ & 5460 & 0.112 \\ $B$ & 4350 & 0.147 \\ $U$ & 3450 & 0.182 \\ $UVW1$ & 2600 & 0.2345 \\ $UVM2$ & 2200 & 0.3395 \\ $UVW2$ & 1930 & 0.2905 \\ \hline \end{tabular} \end{table}