\begin{table}
\caption{\label{tab:observations}Observations.}
%\centerline
{
\begin{tabular}{lllll}
\hline
\hline
& GMRT 610 MHz & VLA 1.4 GHz & VLA 4.9~GHz & VLA 8.5~GHz \\
\hline
Frequency (VLA band)                & 610~MHz &1385, 1465~MHz (L)&4835, 4885~MHz (C)& 8435, 8485~MHz (X)\\
Bandwidth		  & $2\times 16$~MHz& $2\times 50$~MHz & $2\times 50$~MHz & $2\times 50$~MHz \\
Channel width                      &125 kHz & 50~MHz&  50~MHz & 50~MHz\\
Observation dates				& 6 \& 8 Nov. 2008& 15 Jul. 2002, 22 Aug. 1997  & 27 Nov. 2001 & 22 Aug. 1997  \\
Project Code & 15HRa01 & AE0147, AE0111&AH0748&AE0111 \\
Total on-source time		& $\sim$4~h& 49~min, 18~min&  89~min & 8~min\\
VLA configuration   &&B, C&D&C\\
Beam size			&  $8.2\arcsec \times 6.0\arcsec$ & $6.1\arcsec \times 6.1.\arcsec$ & $17\arcsec \times 17\arcsec$ & $3.0\arcsec \times 2.9\arcsec$ \\
rms noise ($\sigma$)	& 78 $\mu$Jy beam$^{-1}$ & 49 $\mu$Jy beam$^{-1}$ & 22 $\mu$Jy beam$^{-1}$ & \ldots\\	
Largest detectable angular scale &${\sim}4\arcmin$&15\arcmin&5\arcmin&${\sim}1.5\arcmin$~$^{a}$\\
\hline
\end{tabular}}
\par
\medskip
$^{a}$ The largest detectable angular scale is about two times smaller than the theoretical value for short integration times. 
\end{table}