\begin{table}%t8
\caption{\label{table:8}Coefficients of correlation corresponding to the fit of Table 6 for VLBI series.} % title of Table
%\centering
 % used for centering table
\begin{tabular}{c c c} % centered columns (4 columns)
\hline\hline % inserts double horizontal lines
Terms & Secular term  \\ % table heading
\hline % inserts single horizontal line
sin (18.6 yr) & --0.5  \\
cos (18.6 yr) &  --0.7  \\
\hline %inserts single line
\end{tabular}
\end{table}