\begin{table}%T1
\caption{ENV observations of OQ~530.}\label{t1}
%\centerline
{
\begin{tabular}{llllcclc}
\hline\hline
Array   & Date         & Stations$^*$  
    & Term. (Mode) & Freq.     & Band   & Correlator  & Int. time   \\
      &       &     &    & GHz   & MHz   &   & s   \\
\hline
% &  &  &  &  &  &  & \\
EVN     & 08 Jun. 1998 & Ef, Cm, Sm, Jb-1, Mc,    
    & MK3A (A)    & 1.6  & 56 & MPIfR, Bonn & 4.0      \\
        &               & Nt, On-85, Ur, Wb
    &            &      &    &             &          \\
EVN     & 20 Feb. 1999 & Cm, Jb-2, Mc, Nt,   
    & MK3A (B)    & 5.0  & 28 & MPIfR, Bonn & 4.0      \\
        &               & On-85, Ur, Wb, Sh, Tr 
    &            &      &    &             &          \\
EVN     & 05 Jun. 2001 & Ef, Cm, Jb-2, Mc, Nt, 
    & MKIV      & 5.0  & 64 & JIVE, Dwingeloo & 2.0  \\
        &              & On-85, Sh, Wb, Tr   
    &            &      &    &             &          \\
\hline
\end{tabular}}
\par
\medskip
$^* $~ Cm Cambridge 32~m; EF Effelsberg 100~m; Jb-1 Lovell 76~m;
         Jb-2 Mk2 25~m; Mc Medicina 32~m; 
         Nt Noto 32~m; 
         On-85 Onsala 25~m; Sh~Shanghai 25~m; 
         Sm Simeiz 22~m; Tr Torun 32~m; Ur Urumqi 25~m; 
         Wb Westerbork array N $\times$ 25.
\par
%
\end{table}