\begin{table}%t6
\caption{\label{Table 6}SDP solution for Wolf 424.}
%\centering
\small
\begin{tabular}{ccc}
\hline\hline
Parameter & SDP\ solution & Torres solution \\ 
\hline
&& \\[-8pt]
$a$ & 1.17807 $\times$ $10^{-15}\pm 1.16551 \times 10^{-16}$ & $\cdots $ \\ 
$b$ & 2.55265 $\times$ $10^{-15}\pm 2.33996 \times 10^{-16}$ & $\cdots $ \\ 
$c$ & 3.30939 $\times$ $10^{-15}\pm 3.01533 \times 10^{-16}$ & $\cdots $ \\ 
$d$ & --8.11000 $\times$ $10^{-17}\pm 3.46166 \times 10^{-17}$ & $\cdots $ \\ 
$f$ & --4.33053 $\times$ $10^{-15}\pm 4.72547 \times 10^{-17}$ & $\cdots $ \\ 
$l$ & --1.25961 $\times$ $10^{-16}\pm 7.08206 \times 10^{-16}$ & $\cdots $ \\ 
$C$ & --4.04594 $\times$ $10^{-4}\pm 1.65488 \times 10^{-5}$ & $\cdots $ \\ 
$P$ & 15.86 $\pm$ 0.40 yr & 15.643 $\pm$ 0.096 yr \\ 
$T$ & 1994.67 $\pm$ 0.53 & 1992.297 $\pm$ 0.056 \\ 
$a^{\prime }$ & 1\farcs067 $\pm$ 0\farcs162 & 0\farcs9257 $\pm$ 0\farcs0049 \\ 
$e$ & 0.138 $\pm$ 0.043 & 0.2950 $\pm$ 0.0035 \\ 
$\Omega $ & 146\fdg296 $\pm$ 0\fdg710 & 143\fdg48 $\pm$ 0\fdg19 \\ 
$i$ & 81\fdg920 $\pm$ 0\fdg939 & 103\fdg00 $\pm$ 0\fdg15 \\ 
$\omega $ & 276\fdg577 $\pm$ 0\fdg193 & 347\fdg2 $\pm$ 1\fdg5 \\ 
\hline
\end{tabular}
\end{table}