\begin{table}%t2
\caption{\label{ModelRes1}Derived properties for NGC 4945, using model results for $T_{\rm e}
 = 5000$~K.}
%\centering
\par
\begin{tabular}{ll}
\hline \hline \noalign{\smallskip}
                    & NGC 4945 \\
\hline
Electron temperature        & 5000 K \\
Electron density            & 1000~cm$^{-3}$ to 10~000~cm$^{-3}$ \\
Effective size\tablefootmark{a}         & 2~pc to 100~pc \\
Total ionized gas mass      & (2 to 6) $\times 10^{5}~M_{\odot}$ \\
$N_{{\rm LyC}}$          & $6 \times 10^{52}$~s$^{-1}$ to $3 \times 10^{53}$~s$^{-1}$ \\
No. O5 stars                & 2000 to 10~000 \\
\hline
\end{tabular}
\tablefoot {\tablefoottext{a}{The total size, i.e. (total volume of all H~II regions)$^{1/3}$.}}
\end{table}