\begin{table}%t4
\caption{Best primary candidate calibrators for LOFAR on baselines $\backsim$2~M$\lambda$.}
\label{tab4}
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\par
%
\par
\begin{tabular}{cccccc}
\hline\hline
Source & Type & Redshift & RA & Dec & $S_{327}$ (Jy) \\
\hline
J0319+4130 (3C 84) & Q & 0.017559 & 03h19m48.160s & +41d30m42.103s & 4.625 \\
J0405+3803 & G & 0.055000 & 04h05m49.262s & +38d03m32.236s & 0.539\\
J0418+3801 (3C 111) &  G & 0.048500 & 04h18m21.277s & +38d01m35.900s & 0.533\\
J0423-0120 &  Q & 0.914000 & 04h23m15.801s & --01d20m33.065s & 1.099\\
J0539-2839 &  Q & 3.104000 & 05h39m54.281s & --28d39m55.948s & 0.564\\
J1150-0024 & Q & 1.976200 & 11h50m43.871s & --00d23m54.205s  & 3.403\\
J1642+3948 (3C 345)  &  Q  &  0.592800  &  16h42m58.810s &  +39d48m36.994s & 3.492\\
J1816+3457 &  G  &  0.244800 & 18h16m23.901s  &  +34d57m45.748s & 0.729\\
J2005+7752 &  Q  &  0.342000 &  20h05m30.999s  &  +77d52m43.248s & 0.602 \\
J2022+6136 &  G  & 0.227000 & 20h22m06.682s & +61d36m58.805s & 0.990\\
J2202+4216 (BL Lac)  &   Q &  0.068600  & 22h02m43.291s &  +42d16m39.980s & 1.798\\
J2253+1608 (3C 454.3) & Q & 0.859000 & 22h53m57.748s & +16d08m53.561s & 8.659 \\
J2327+0940 & Q & 1.843000 & 23h27m33.581s & +09d40m09.463s & 0.396\\
J2330+1100 & Q &  1.489000 & 23h30m40.852s & +11d00m18.710s & 0.844\\
\hline
\end{tabular}
\end{table}