\begin{table}%t1 %\centering \par \caption{The VLA observing schedule.}\label{tab:epochs} \begin{tabular}{lcl} \hline\hline\noalign{\smallskip} Date & Conf. & Sources \\ \noalign{\smallskip} \hline\noalign{\smallskip} 1990 Feb. 26 & A & RX~Boo, U~Her, OH~39.7+1.5, \\ & & OH~83.4$-$0.9, VX Sgr \\ 1990 Jun. 3 & A & RX~Boo, U~Her, OH~39.7+1.5, \\ & & OH~83.4$-$0.9, VX Sgr \\ 1991 Aug. 23 & A & OH~39.7+1.5 \\ 1991 Oct. 20 & BnA & RX~Boo, U~Her \\ 1992 Jan. 10 & B & VX~Sgr, NML~Cyg \\ 1992 Dec. 28 & A & RX~Boo, U~Her, OH~39.7+1.5 \\ 1995 Sep. 5 & A & RX~Boo \\ 1996 Dec. 10 & A & OH~26.5+0.6 \\ 1998 May 31 & A & OH~26.5+0.6 \\ \noalign{\smallskip} \hline \end{tabular} \end{table}