\begin{table}[]
\centering
\rowcolors{2}{lightgray!40}{}
\caption{}
\begin{tabular}{c c c c c}\rowcolor{lightgray} 
Parameter & PFIM & PopED & NONMEM & MlxDesignEval \\ 
$\mu_{ka}$ & 13.9 & 13.9 & 13.9 & 13.9 \\ 
$\mu_{Cl}$ & 4.7 & 4.7 & 4.7 & 4.7 \\ 
$\mu_{V}$ & 2.8 & 2.8 & 2.8 & 2.8 \\ 
$\omega^2_{ka}$ & 25.8 & 25.8 & 25.8 & 25.8 \\ 
$\omega^2_{Cl}$ & 25.6 & 25.6 & 25.6 & 25.6 \\ 
$\omega^2_{V}$ & 30.3 & 30.3 & 30.3 & 30.3 \\ 
$b^2$ & 11.2 & 11.2 & 11.2 & 11.2 \\ 
\end{tabular} 
 label{tab:} 
 \end{table}