\begin{table}%t2
\caption{\label{tab:swift-obs}\emph{Swift}/XRT observations   of PKS~0208-512. }
%\centering
\par
\begin{tabular}{ccccccccc}
\hline\hline \noalign{\smallskip}
\multicolumn{1}{c}{Obs. ID}&\multicolumn{1}{c}{Date}&\multicolumn{1}{c}{MJD }&\multicolumn{1}{c}{Offset}&\multicolumn{1}{c}{Expo.}&\multicolumn{1}{c}{Index}&\multicolumn{1}{c}{N}&\multicolumn{1}{c}{L}&\multicolumn{1}{c}{$\chi^2$/d.o.f.}\\
\multicolumn{1}{c}{(Swift/XRT)}&\multicolumn{1}{c}{ }&\multicolumn{1}{c}{(day)}&\multicolumn{1}{c}{(arcsecond)}&\multicolumn{1}{c}{(ks)}&\multicolumn{1}{c}{}&\multicolumn{1}{c}{}&\multicolumn{1}{c}{}&\multicolumn{1}{c}{}\\ \hline
00035002001 & 2005 Apr. 23 & 53~483.67   & 0.8& 12.4& & & & \\
00035002003 & 2005 May. 04 & 53~495.00   & 1.1& 2.1& & & & \\
00035002004 & 2005 May. 12 & 53~502.02   & 1.1& 2.1& & & & \\
00035002005 & 2005 May. 10 & 53~500.01   & 1.3& 4.2& & & & \\
combined    &            &         &    & 20.8&  1.64~$\pm$~0.06&4.4~$\pm$~0.2&3.4&0.9/46\\\hline
00035002014 & 2008 Oct. 23 & 54~762.56   & 1.5& 3.7& & & & \\
00035002017 & 2008 Nov. 10 & 54~780.65   & 2.3& 3.8& & & & \\
00035002021 & 2008 Nov. 25 & 54~795.43   & 1.5& 2.2& & & & \\
combined    &            &         &    & 9.7&  1.63~$\pm$~0.11&4.3~$\pm$~0.3&3.4&1.28/19\\\hline
00035002026 & 2008 Dec. 17 & 54~817.31   & 4.1& 4.2& & & & \\
00035002027 & 2008 Dec. 20 & 54~820.07   & 0.8& 4.2& & & & \\
00035002028 & 2008 Dec. 20 & 54~820.73   & 0.4& 4.4& & & & \\
00035002029 & 2008 Dec. 23 & 54~823.07   & 1.1& 4.4& & & & \\
00035002030 & 2008 Dec. 24 & 54~824.81   & 0.2& 4.2& & & & \\
00035002031 & 2008 Dec. 26 & 54~826.10   & 0.8& 4.6& & & & \\
combined    &            &         &    & 26&  1.64~$\pm$~0.07&3.0~$\pm$~0.2&2.3&1.2/38\\\hline
combined all   &            &         &    & 56.5&  1.62~$\pm$~0.04&3.9~$\pm$~0.1&3.1&1.25/100\\\hline
combined 2008  &            &         &    & 35.7&  1.60~$\pm$~0.05&3.3~$\pm$~0.1&2.7&1.1/59\\
\hline
\end{tabular}
\tablefoot {The observation ID, time in calendar date and MJD,  the pointing offset angle,  exposure, spectral index, normalization (in units of 10$^{-4}$~ph~cm$^{-2}$~s$^{-1}$~keV$^{-1}$), luminosity (in units of 10$^{-12}$~erg~cm$^{-2}$~s$^{-1}$, at 0.2$-$10~keV), and the reduced~$\chi^2$ and degree of freedom~(d.o.f.) of the power-law fits are given.}\vspace*{1mm}
\end{table}