\begin{table}%t1
 \caption{\label{table_midIR_fluxes}Summary of the mid-IR photometric measurements\tablefootmark{1}  performed on the \textit{Spitzer IRAC}, \textit{IRS PUI} $16~\mu$m, and \textit{MIPS} $24$, and $70~\mu$m images (Fig.~\ref{Fig_NUV_16_24_70mic_contours}). }
 \small%\centering
\par
    \begin{tabular}{c c c c c c c c}
	\hline
	\hline\noalign{\smallskip}
   Target region & $3.6~\mu$m & $4.5~\mu$m & $5.8~\mu$m & $8~\mu$m\tablefootmark{5} &  $16~\mu$m\tablefootmark{6} &  $24~\mu$m &$70~\mu$m \\
\hline\noalign{\smallskip}
 SQ~ridge\tablefootmark{2}                 & $ 23.7\pm0.9$ & $ 11.9\pm0.2$ & $ 7.3\pm0.2$ & $4.2\pm0.1$ & $1.25\pm 0.05$ & $2.25\pm0.12$ & $<$$6.43$  \\                            
SQ~ridge (partial)\tablefootmark{3}     & $ 19.4\pm1.7$  & $9.9\pm1.8$  & $ 6.0\pm0.1$ &$ 3.35\pm0.11$ & $1.00\pm 0.06$ & $0.89\pm0.15$ &  $<$$5.04$  \\ 
$17''$ beam\tablefootmark{4}           &$ 17.6\pm0.9$ & $9.15\pm0.12$ & $ 5.29\pm 0.15$ & $3.07\pm0.11$  &  $0.88\pm0.03$ & $0.79\pm0.15$ & $<$$3.91$ \\
 \hline
\end{tabular}
\tablefoot{The background-subtracted surface brightnesses are indicated for three different apertures. The last row ($17''$ circular aperture ) shows the values we adopt throughout this paper, and in particular for the SED presented in Fig.~\ref{Fig_SED_Galactic_SQshock}.\\
\tablefoottext{1}{Fluxes are in units of $\times 10^{-8}$~W~m$^{-2}$~sr$^{-1}$.}\\
\tablefoottext{2}{Mid-IR signal integrated over the shock structure, defined by the 4$\sigma$ S(3) H$_2$~rotational line contours (black line in Fig.~\ref{Fig_NUV_16_24_70mic_contours}). We exclude the SQ-A star-forming region.}\\
\tablefoottext{3}{Mid-IR signal integrated over the S(3) H$_2$~rotational line contours by excluding overlaps with the ($\mathcal{F}_{24~\mu\rm m} > 0.25$~MJy~sr$^{-1}$) $24~\mu$m magenta contours (see  Fig.~\ref{Fig_NUV_16_24_70mic_contours}). This allows us to partially remove the contribution from star-forming regions to the dust emission.}\\
\tablefoottext{4}{Mid-IR signal integrated over the 17$''$ beam in the center of the SQ~shock structure (yellow circle in Fig.~\ref{Fig_NUV_16_24_70mic_contours}). }\\
\tablefoottext{5}{The contribution of the  $8~\mu$m S(4) H$_2$~line emission to the $8~\mu$m in-band flux is subtracted.}\\
\tablefoottext{6}{The contribution of the  $17~\mu$m S(1) H$_2$~line emission to the $16~\mu$m in-band flux is subtracted.}}
\end{table}