\begin{table}%t1
\caption{\label{tab4}G23.01--0.41: radio continuum emission.}
%\centering
\par
\begin{tabular}{c c c c c c c c c}
\hline \hline \noalign{\smallskip}
          &            &              &           &                   & \multicolumn{2}{c}{ Peak position\tablefootmark{a} } &         &            \\
Telescope & $\lambda$  &    {\it HPBW}      &    PA   &    Image rms      & RA(J2000) &  Dec(J2000) &    $F_{\rm peak}$    &  $F_{\rm int}$ \\
          &    (cm)    & ($'' \times ''$) &  (\degr)  & (mJy beam$^{-1}$) &   (h m s)   &  (\degr $'$ $''$)& (mJy beam$^{-1}$)&   (mJy)    \\
\hline
VLA$-$A     &    1.3     &  $0.131 \times  0.095$  &   --13   &  0.06  &  18 34 40.284  &  --09 00 38.31 &   0.72  & 0.98 \\
VLA$-$C     &    1.3     &  $1.1   \times  0.8  $  &    0    &  0.05  &    ...         &     ...       &   1.31   & 1.44 \\
VLA$-$A     &    3.6     &  $0.36  \times  0.24 $  &   --5    &  0.03  &    ...         &     ...       &   0.47  & 0.59 \\
VLA$-$C     &    3.6     &  $2.7   \times  1.9  $  &    2    &  0.03  &    ...         &     ...       &   0.52  & 0.50 \\
\hline
\end{tabular}
\tablefoot {\tablefoottext{a}{The absolute position of the VLA$-$A 1.3~cm emission peak, obtained aligning positions of persistent water maser spots between the VLA and VLBA observations, should be accurate to about~$\pm$$0\farcs01$.}}
\end{table}