\begin{table}%t2
\caption{\label{tab:siriusflux}Measured monochromatic fluxes of Sirius~B.}
%\centerline
{ \small
\begin{tabular}{ccccc}
\hline\hline
Wavelength &  Flux  & Stat. error & Syst. error & Ref.\\
(\AA)      & (ph~m$^{-2}$~s$^{-1}$~\AA$^{-1}$) & ({\%}) & ({\%}) & \\
\hline
 250       & $19.5$            & 10  & $\pm$10     & a \\
 700       & $20$              & --  & $\pm$100    & b \\
1302       & $8.32\times 10^4$ & 0.8 & $\pm$10.2   & c \\
3500       & $9.41\times 10^4$ & 1.0 & $+$4.5      & d \\
4600       & $6.62\times 10^3$ & 1.0 & $+$4.5      & d \\
6400       & $2.64\times 10^3$ & 1.0 & $+$4.5      & e \\
6700       & $2.25\times 10^3$ & 1.0 & $+$4.5      & e \\
\hline
\end{tabular}}
\par
\smallskip
${{\rm a}}$: EUVE MW, \citet{holberg1998}.
${{\rm b}}$: EUVE LW, \citet{craig1997}.
${{\rm c}}$: HST-GHRS, \citet{hebrard1999}.
${{\rm d}}$: HST-STIS G430L, \citet{barstow2005}.
${{\rm e}}$: HST-STIS G750M, \citet{barstow2005}. 
\end{table}