\begin{table}%tC.17
\par
\caption{Like Table~\ref{naphthalene} for perylene (C$_{20}$H$_{12}$).}
\label{perylene}
%\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}
$\parallel$ 17.21 & $4.6\times 10^{-29}$ (0.59) & $3.0\times 10^{-27}$ (0.79) & $1.9\times 10^{-24}$ (0.42) \\
$\perp$ 18.36 & $9.4\times 10^{-29}$ (1.20) & $6.0\times 10^{-27}$ (1.60) & $3.8\times 10^{-24}$ (0.83) \\
$\parallel$ 18.63 & $1.6\times 10^{-29}$ (0.20) & $8.9\times 10^{-28}$ (0.24) & $6.0\times 10^{-25}$ (0.13) \\
$\perp$ 21.19 & $5.1\times 10^{-30}$ (0.06) & $3.4\times 10^{-28}$ (0.09) & $1.5\times 10^{-25}$ (0.03) \\
$\parallel$ 21.76 & $2.0\times 10^{-29}$ (0.26) & $1.4\times 10^{-27}$ (0.38) & $8.3\times 10^{-25}$ (0.18) \\
%21.99 & $2.6\times 10^{-30}$ (0.03) & $1.5\times 10^{-28}$ (0.04) & $5.0\times 10^{-28}$ (0.00) \\
%23.34 & $3.3\times 10^{-30}$ (0.04) & $1.7\times 10^{-28}$ (0.04) & $4.8\times 10^{-28}$ (0.00) \\
$[23.94]$ & $3.6\times 10^{-30}$ (0.05) & $1.6\times 10^{-28}$ (0.04) & -- \\
$[27.75]$ & $5.1\times 10^{-30}$ (0.07) & $2.2\times 10^{-28}$ (0.06) & -- \\
$[28.48]$ & $5.3\times 10^{-30}$ (0.07) & $2.5\times 10^{-28}$ (0.07) & -- \\
$[34.30]$ & $7.7\times 10^{-30}$ (0.10) & $3.2\times 10^{-28}$ (0.09) & -- \\
$\parallel$ 39.63 & $9.4\times 10^{-30}$ (0.12) & $5.6\times 10^{-28}$ (0.15) & -- \\
$[42.43]$ & $1.1\times 10^{-29}$ (0.14) & $3.7\times 10^{-28}$ (0.10) & -- \\
$[48.89]$ & $1.2\times 10^{-29}$ (0.16) & $3.7\times 10^{-28}$ (0.10) & -- \\
$\perp$ 57.14 & $2.7\times 10^{-29}$ (0.35) & $1.9\times 10^{-27}$ (0.49) & $7.3\times 10^{-25}$ (0.16) \\
$[77.69]$ & $1.6\times 10^{-29}$ (0.21) & $3.0\times 10^{-28}$ (0.08) & -- \\
$\perp$ 105.54 & $2.0\times 10^{-29}$ (0.26) & $1.4\times 10^{-27}$ (0.38) & $7.1\times 10^{-26}$ (0.02) \\
$[344.80]$ & $1.4\times 10^{-29}$ (0.18) & $3.1\times 10^{-29}$ (0.01) & -- \\
\hline 
\end{tabular}
%\end{center}
\par
\end{table}