latex symbol

\begin{table}[htbp]
\centering
\caption{LDA measuring locations and their symbols}
\label{tab:}
\begin{tabular}{|c|c|c|c|c|c|c|c|c|c|}\hline
$s^*$ & 0.21 & 0.31 & 0.41 & 0.50 & 0.60 & 0.70 & 0.80 & 0.90 & 0.99 \\ \hline
$x/c_a$& 0.21 & 0.31 & 0.41 & 0.50 & 0.60 & 0.70 & 0.80 & 0.90 & 0.99 \\ \hline
Symbol-EXP & $\boxdot$ & $\blacksquare$ &$\odot$ & $\bullet$ & $\vartriangle$&$\blacktriangle$&$\triangledown$ & $\blacktriangledown$ & $\Diamond$\\ \hline
Symbol-CFD & $\boxdot$ & $\blacksquare$ &$\odot$ & $\bullet$ & $\vartriangle$&$\blacktriangle$&$\triangledown$ & $\blacktriangledown$ & $\Diamond$\\ \hline
\end{tabular}
\end{table}
% Symbol & $\boxdot$ & $\blacksquare$ &$\odot$ & $\bollet$ & $\vartriangle$&$\blacktriangle$&$\triangledown$ & $\blacktriangledown$ & $\Diamond$\\ \hline