\begin{table}%tC.20
\par
\caption{Like Table~\ref{naphthalene} for the pentacene cation (C$_{22}$H$_{14}^+$).}
\label{pentacene+}
%\begin{center}
\par
\begin{tabular}{cccc}
\hline \hline \noalign{\smallskip} 
& \multicolumn{3}{c}{Integrated flux} \\
\noalign{\smallskip} \cline{2-4} \noalign{\smallskip}
 &  & Red & IRAS\\
Peak & ISRF & Rectangle & 21282+5050\\
($\mu$m) & (W$~~$sr$^{-1}$) (\%) & (W$~~$sr$^{-1}$) (\%)& (W$~~$sr$^{-1}$) (\%) \\ 
\hline \noalign{\smallskip}
$\parallel$ 17.37 & $3.3\times 10^{-29}$ (0.15) & $1.8\times 10^{-27}$ (0.16) & $4.7\times 10^{-25}$ (0.06) \\
$\perp$ 20.63 & $1.6\times 10^{-28}$ (0.76) & $9.7\times 10^{-27}$ (0.89) & $2.3\times 10^{-24}$ (0.30) \\
$\perp$ 21.94 & $6.9\times 10^{-28}$ (3.20) & $4.0\times 10^{-26}$ (3.71) & $9.4\times 10^{-24}$ (1.22) \\
$\perp$ 25.93 & $1.1\times 10^{-29}$ (0.05) & $6.3\times 10^{-28}$ (0.06) & $5.1\times 10^{-26}$ (0.01) \\
$\parallel$ 27.66 & $1.5\times 10^{-29}$ (0.07) & $9.1\times 10^{-28}$ (0.08) & $1\times 10^{-25}$ (0.01) \\
$[27.87]$ & $1.2\times 10^{-29}$ (0.05) & $2.3\times 10^{-28}$ (0.02) & -- \\
$[35.10]$ & $2.1\times 10^{-29}$ (0.10) & $3.8\times 10^{-28}$ (0.03) & -- \\
$[40.11]$ & $2.6\times 10^{-29}$ (0.12) & $4.5\times 10^{-28}$ (0.04) & -- \\
$[40.71]$ & $2.8\times 10^{-29}$ (0.13) & $4.5\times 10^{-28}$ (0.04) & -- \\
$[41.70]$ & $2.8\times 10^{-29}$ (0.13) & $4.2\times 10^{-28}$ (0.04) & -- \\
$\perp$ 52.73 & $6.1\times 10^{-29}$ (0.28) & $3.5\times 10^{-27}$ (0.32) & $4.6\times 10^{-25}$ (0.06) \\
$[62.41]$ & $4.7\times 10^{-29}$ (0.22) & $4.9\times 10^{-28}$ (0.05) & -- \\
$\parallel$ 86.88 & $7.9\times 10^{-29}$ (0.37) & $4.7\times 10^{-27}$ (0.43) & $4.5\times 10^{-25}$ (0.06) \\
$[100.30]$ & $6.5\times 10^{-29}$ (0.30) & $3.1\times 10^{-28}$ (0.03) & -- \\
$[110.73]$ & $6.6\times 10^{-29}$ (0.31) & $2.9\times 10^{-28}$ (0.03) & -- \\
$\perp$ 474.50 & $1.1\times 10^{-28}$ (0.49) & $3.7\times 10^{-27}$ (0.34) & -- \\
\hline 
\end{tabular}
%\end{center}
\par
\end{table}