\begin{table}%t1
\caption{\label{tab:mask}Masked sources in DIRBE maps.}
%\centering
\par
\small\begin{tabular}{lcc}
\hline\hline
 Source & Central $l, b$ & Subtracted area  \\
        & (degrees) & (sq. degrees)  \\
\hline
Galactic center   &  0, 0       &  $10 \times 10$     \\
Orion arm         &  --80, 0     &  $20 \times 20$     \\
High latitude     &  10, 20     &  $20 \times 20$     \\
Magellanic clouds &  80, --30    &  $20 \times 20$     \\
M31               &  --120, --20  &  $30 \times 20$     \\
\hline
\end{tabular}
\end{table}