\begin{table}%t3
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   \caption{\label{tab:peaks}Peak positions and ABC band classifications for the PAH emission features between 5$-$20~$\mu$m.}
   \vspace*{-2.99mm}
      \small%%%\centering

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     \begin{tabular}{llllllllllllllllll}
       \hline
       \hline\\[-3mm]
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       Source          & \multicolumn{16}{c}{PAH band [$\mu$m]} \\
                             & 5.25     & 5.7      & 6.2      & 7.6      & 7.8      & 8.6      & 10.6     & 11.2     & 12.0     & 12.7     & 13.5     & 14.1     & 15.8     & 16.4   & 17.4     & 17.8     & 18.9     \\
                       & [$\mu$m] & [$\mu$m] & [$\mu$m] & [$\mu$m] & [$\mu$m] & [$\mu$m] & [$\mu$m] & [$\mu$m] & [$\mu$m] & [$\mu$m] & [$\mu$m] & [$\mu$m] & [$\mu$m] & [$\mu$m] & [$\mu$m] & [$\mu$m] & [$\mu$m] \\
       \hline
       NGC~7023        & 5.23     & 5.73     & 6.25/B   & 7.62/A   & 7.90/A   & 8.63     & 10.81?   & 11.30/B  & 12.02    & 12.81    & 13.59    & 14.32    & 15.82    & 16.42    & 17.35    & 17.77    & 19.04    \\
       NGC~7023 Pos 1  &$-$       &$-$       &$-$       &$-$       &$-$       &$-$       &$-$       &$-$       &$-$       &$-$       &$-$       & ?        & 15.82    & 16.42    & 17.35    & 17.86    & 18.96    \\
       NGC~7023 Pos 3  &$-$       &$-$       &$-$       &$-$       &$-$       &$-$       &$-$       &$-$       &$-$       &$-$       &$-$       & ?        & 15.57?   & 16.42    & 17.35    & 17.94    & 18.96    \\
       NGC~7023 Pos 6  &$-$       &$-$       &$-$       &$-$       &$-$       &$-$       &$-$       &$-$       &$-$       &$-$       &$-$       & ?        & 15.82    & 16.42    & 17.35    & 17.86    & 19.04    \\
       NGC~2023        & 5.23     & 5.71     & 6.23/A   & 7.63/A   & 7.90/A   & 8.59     & 10.74    & 11.25/A  & 11.96    & 12.74    & 13.53    & 14.18    & 16.02    & 16.43    & 17.36    & 17.82    & 19.09    \\
       Galaxy (avg)    & 5.26     & 5.72     & 6.23/A   & 7.62/A   & 7.90/A   & 8.62     & 10.53    & 11.24/A  & 11.98    & 12.69    & 13.47    & 14.18    & 15.86?   & 16.45    & 17.39    & 17.86    & 19.15    \\
       NGC~4736 Pos 2  &$-$       &$-$       &$-$       &$-$       &$-$       &$-$       & 10.54    & 11.21/A  & 11.96    & 12.73    & 13.62    & 14.17    & 15.82    & 16.45    & 17.40    & 17.90    & 19.16?   \\
       NGC~4736 Pos 1  &$-$       &$-$       &$-$       &$-$       &$-$       &$-$       & 10.53    & 11.23/A  & 12.00    & 12.73    & 13.62    & 13.99    & 16.02    & 16.45    & 17.40    & 17.91    & 18.62?   \\
       NGC~4736 Pos 0  &$-$       &$-$       &$-$       &$-$       &$-$       &$-$       & 10.54    & 11.22/A  & 11.96    & 12.72    & 13.62    & 14.18    & 16.09?   & 16.50    & 17.40    & 17.81?   & 18.88?   \\
       NGC~4736 Pos -1 &$-$       &$-$       &$-$       &$-$       &$-$       &$-$       & 10.60    & 11.27/B  & 12.00    & 12.81    & 13.55    & 14.26    & 15.89    & 16.47    & 17.40    & 17.69    & 19.28?   \\
       HD~36917         &          & 5.70     & 6.22/A   & 7.68/AB  & 7.86/AB  & 8.54     & 10.60    & 11.27/B  & 12.05    & 12.78    & 13.78    & 14.13    & 15.88    & 16.39    & 17.40    & 17.85?   & 18.85?   \\
       HD~37411         &$-$       & 5.73     & 6.25/B   & 7.56/B   & 7.80/B   & 8.66     & 10.06    & 11.27/B  & 11.93    & 12.66    & 13.26    & 14.18    & 16.22?   & 16.48?   & 17.24?   & 17.94?   & 18.31?   \\
       CN1 5           & 5.29     & 5.74     & 6.27/B   & 7.50/B   & 7.90/B   & 8.71     & 10.57    & 11.25/B  & 12.00    & 12.71    & 13.42    & 14.35?   & 16.07?   & 16.50?   & 17.47    & 17.88    & 19.06?   \\
       NGC~6567        & 5.26     & 5.68     & 6.23/A   & 7.53/B   & 7.85/B   & 8.71     & 10.56    & 11.21/A  & 11.95    & 12.80    & 13.33    & 14.63    & 16.01?   & 16.50?   & 17.11?   & 17.45?   & 19.05?   \\
       LMC SMP036      & 5.40?    & 5.64     & 6.24/B   & 7.40/B   & 7.87/B   & 8.72     & 10.61?   & 11.23/A  & 11.83    & 12.82    & 13.41    & 14.22    & 15.95?   & 16.45    & 17.53?   & 17.78    & 18.79?   \\
       LMC SMP038      & 5.24     & 5.60     & 6.22/A   & 7.63/B   & 7.85/B   & 8.65     & 10.73?   & 11.18/A  & 11.99    & 12.73    & 13.76    & 14.55    & 16.00?   & 16.41    & 17.57?   & 17.86    & 18.67?   \\
       LMC SMP061      & 3.50?    & 5.64     & 6.24/B   & 7.56/B   & 7.81/B   & 8.66     & 10.50?   & 11.21/A  & 11.70    & 12.62    & 13.29    & 13.95?   & 16.10?   & 16.63?   & 17.36?   & 17.87?   & 18.67?   \\                         
       IRAS 12063-6259 & 5.19     & 5.71     & 6.20/A   & 7.58/A   & 7.87/B   & 8.59     & 10.54    & 11.21/A  & 11.98    & 12.84    & 13.54    & 14.02?   & 15.85?   & 16.47?   & 17.44    & 17.69?   & 18.63?   \\ 
       Orion Bar Pos 1 &$-$       &$-$       &$-$       &$-$       &$-$       &$-$       & 10.72    & 11.20/A  & 12.00    & 12.79    & 13.55    & 14.00?   & 15.90?   & 16.50?   & 17.44    & 17.89?   & 19.08?   \\
       Orion Bar Pos 2 &$-$       &$-$       &$-$       &$-$       &$-$       &$-$       & 10.58    & 11.22/A  & 12.00    & 12.79    & 13.53    & 14.22    & 16.23?   & 16.41    & 17.36    & 17.89?   & 18.95?   \\
       \hline
     \end{tabular}
     \vspace*{-1.99mm}
     \tablefoot{1) a ``--'' indicates there are no data available;
       2) a ``?'' indicates an uncertain band identification;
       3) the blended 7.6 and 7.8 bands have been separated using Gaussians.} 
 \end{table}