\begin{table}%tC.16
\par
\caption{Like Table~\ref{naphthalene} for the chrysene cation (C$_{18}$H$_{12}^+$).}
\label{chrysene+}
%\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}
$\parallel$ 17.87 & $5.5\times 10^{-29}$ (0.45) & $3.8\times 10^{-27}$ (0.60) & $1.1\times 10^{-24}$ (0.20) \\
$\perp$ 18.38 & $8.2\times 10^{-30}$ (0.07) & $5.8\times 10^{-28}$ (0.09) & $1.2\times 10^{-25}$ (0.02) \\
$\parallel$ 18.54 & $2.3\times 10^{-29}$ (0.19) & $1.4\times 10^{-27}$ (0.22) & $3.6\times 10^{-25}$ (0.07) \\
$\perp$ 19.44 & $5.1\times 10^{-29}$ (0.42) & $3.2\times 10^{-27}$ (0.51) & $8.8\times 10^{-25}$ (0.17) \\
$[20.26]$ & $5.7\times 10^{-30}$ (0.05) & $1.2\times 10^{-28}$ (0.02) & -- \\
$\parallel$ 20.86 & $1\times 10^{-28}$ (0.83) & $6.7\times 10^{-27}$ (1.08) & $1.7\times 10^{-24}$ (0.33) \\
$[21.28]$ & $6.7\times 10^{-30}$ (0.05) & $1.9\times 10^{-28}$ (0.03) & -- \\
$[22.10]$ & $8.1\times 10^{-30}$ (0.07) & $2.2\times 10^{-28}$ (0.04) & -- \\
$\perp$ 24.09 & $4.3\times 10^{-29}$ (0.35) & $2.8\times 10^{-27}$ (0.44) & $6.3\times 10^{-25}$ (0.12) \\
$[26.95]$ & $1.5\times 10^{-29}$ (0.12) & $3\times 10^{-28}$ (0.05) & -- \\
$[27.20]$ & $1.4\times 10^{-29}$ (0.12) & $3\times 10^{-28}$ (0.05) & -- \\
$\perp$ 34.64 & $2.9\times 10^{-29}$ (0.23) & $1.8\times 10^{-27}$ (0.29) & $2.8\times 10^{-25}$ (0.05) \\
$[36.34]$ & $2.4\times 10^{-29}$ (0.20) & $4.9\times 10^{-28}$ (0.08) & -- \\
$\perp$ 45.49 & $5.3\times 10^{-29}$ (0.43) & $3.6\times 10^{-27}$ (0.57) & $6\times 10^{-25}$ (0.11) \\
$\parallel$ 54.75 & $4.8\times 10^{-29}$ (0.39) & $3.2\times 10^{-27}$ (0.50) & $3.6\times 10^{-25}$ (0.07) \\
$[59.57]$ & $4.3\times 10^{-29}$ (0.35) & $5\times 10^{-28}$ (0.08) & -- \\
$[78.66]$ & $5.2\times 10^{-29}$ (0.43) & $4.3\times 10^{-28}$ (0.07) & -- \\
$\perp$ 136.64 & $6.8\times 10^{-29}$ (0.56) & $4.4\times 10^{-27}$ (0.71) & $6.8\times 10^{-26}$ (0.01) \\
$\perp$ 249.14 & $7.7\times 10^{-29}$ (0.63) & $1.7\times 10^{-27}$ (0.28) & -- \\
\hline 
\end{tabular}
%\end{center}
\par
\end{table}