\begin{table}%t2
\caption{\label{table:2}M~33 data sample.}
%\centering
\par
\begin{tabular}{r r r  c c c}
\hline\hline
ID & ID & ID & D & S(20 cm) & Flux(0.2--4.5) \\
opt & rad & xray & $\Ub{pc}$ & $\Ub{mJy}$ & $\Ub{\flux}$ \\
\hline
 9 &  11 &  93 & 18 & 0.7 & $4.29\E{-15}$ \\
11 &  13 &  98 & 17 & 0.6 & $3.81\E{-15}$ \\
15 &  20 & 106 & 27 & 0.6 & $2.79\E{-15}$ \\
20 &  25 & 120 & 10 & 0.8 & $1.03\E{-14}$ \\
21 &  29 & 121 & 28 & 0.9 & $1.41\E{-13}$ \\
25 &  42 & 144 & 27 & 1.4 & $3.63\E{-15}$ \\
27 &  47 & 153 & 23 & 1.2 & $2.99\E{-15}$ \\
28 &  50 & 158 & 11 & 0.8 & $2.45\E{-14}$ \\
29 &  52 & 161 & 20 & 0.5 & $1.73\E{-14}$ \\
31 &  57 & 164 & 39 & 1.8 & $3.88\E{-14}$ \\
35 &  64 & 179 & 32 & 3.5 & $1.01\E{-14}$ \\
42 &  75 & 194 & 29 & 0.5 & $1.39\E{-14}$ \\
47 &  90 & 207 & 36 & 0.2 & $7.05\E{-15}$ \\
53 & 110 & 213 & 40 & 0.2 & $1.53\E{-15}$ \\
54 & 111 & 214 & 16 & 1.3 & $2.08\E{-15}$ \\
55 & 112 & 215 & 18 & 4.4 & $2.84\E{-14}$ \\
57 & 114 & 220 & 21 & 0.4 & $1.87\E{-15}$ \\
59 & 121 & 224 & 16 & 0.3 & $3.90\E{-15}$ \\
62 & 125 & 225 & 29 & 0.4 & $4.87\E{-15}$ \\
64 & 130 & 230 & 27 & 0.5 & $3.65\E{-15}$ \\
73 & 148 & 250 & 17 & 0.5 & $1.41\E{-14}$ \\
97 & 181 & 314 & 35 & 0.8 & $4.84\E{-15}$ \\
\hline
\end{tabular}
\end{table}