\begin{tabular}{lcc} 
\\[-1.8ex]\hline 
\hline \\[-1.8ex] 
\\[-1.8ex] & \gls{cus} & \gls{cug} \\ 
\hline \\[-1.8ex] 
particle diameter* (\si{\um}) & 130--380 & 130--380 \\ 
volume* (\si{\ml\per\g\of{dry}}) & 12--18 & 10--16 \\ 
density* (\si{\g\per\ml}) & 1.04 & 1.04 \\ 
specific number (\si{\per\g\of{dry}}) & \num{1e6} & \num{8e5} \\ 
average pore diameter* \si{\um} & 20 & 20 \\ 
\hline \\[-1.8ex] 
\multicolumn{3}{l}{\textit{*in \gls{pbs}}} \\
\end{tabular} 