\begin{table}%t5
\caption{\label{surveys}Comparison of  major surveys carried out at 15~$\mu$m listed by mission, then by decreasing areal coverage.}
%\centering
\par
\begin{tabular}{@{}llllll}
\hline\hline \noalign{\smallskip}
Satellite &Survey  & Area & Sensitivity & Sources & Volume \\
              &            & (deg$^{2}$) & (mJy) & (number) & (Mpc$^{3}$)\\
\hline
{AKARI } & NEP-wide$^1$ & $5.8$  & $0.25$\tablefootmark{*} & 10686 & 57.2\\
{AKARI } & NEP-deep$^2$ & $0.6$  & $0.1$\tablefootmark{*}  & 6737 & 6.17\\
{AKARI } & NEP-PV$^3$ & $0.02$  & $0.07$& 277 & 0.21 \\
{AKARI } & Abell 2218$^4$ & $0.034$  & $0.042$& 565 & 0.35 \\
{\it Spitzer } & HDF-S$^5$ & $0.04$ ($0.003$) & $0.09$ ($0.04$) & 515 & 0.41 (0.031)\\
{\it Spitzer } & HDF-N$^6$ & $0.01$ & $0.08$& 153 & 0.1 \\
{ISO } & ELAIS S1$^7$ & $4.17 $  & $0.5$& 736 & 38.86\\
{ISO } & ELAIS N1$^7$ & $2.67 $ & $0.5$& 490 & 24.88\\
{ISO } & ELAIS N2$^7$ & $2.67 $  & $0.5$& 566 & 24.88 \\
{ISO } & ELAIS N3$^7$ & $0.88 $  & $0.5$& 131 & 8.2 \\
{ISO } & Lockman hole shallow$^8$ & $0.55 $ & $0.25$& 457 & 5.41\\
{ISO } & Marano deep$^9$ & $0.25 $  & $0.3$ & 180 & 2.44 \\
{ISO } & Lockman hole deep$^{10}$ & $0.14$  & $0.2$& 283 & 1.39\\
{ISO } & ELAIS S2$^{11}$ & $0.12 $  & $0.4$& 43 & 1.15\\
{ISO } & CFRS 1452 field$^{12}$ & $0.028$ & $0.4$ & 41 & 0.27 \\
{ISO } & Marano UDSR$^9$ & $ 0.025$ & $0.3$ & 142 & 0.244\\
{ISO } & Marano UDSF$^9$ & $ 0.025$ & $0.3$ & 137 & 0.244\\
{ISO }& A370 cluster$^{13}$ & $0.009$ & $0.2$& 20 & 0.09 \\
{ISO } & HDF-S$^{14}$ & $0.008$ & $0.25$ & 24 & 0.079\\
{ISO } & HDF-N$^{15}$ & $0.007$ & $0.2$ & 19 & 0.069\\
{ISO }& A2218 cluster$^{13}$ & $0.006$ & $0.1$& 46 & 0.062  \\
{ISO }& A2390 cluster$^{16}$ & $0.0015$  & $0.1$& 34 &  0.015 \\
\hline
\end{tabular}
\tablefoot{\tablefoottext{*}{5$\sigma$ sensitivity above the noise.}} 
\tablebib{$^1$ Lee et~al. (\cite{lee08}); $^2$ Wada et~al. (\cite{wada08});
$^3$ Lee et~al. (\cite{lee08}); $^4$ Hopwood (\cite{hopwood10}); $^5$ Teplitz et~al. (\cite{teplitz05b}); $^6$ Teplitz et~al. (\cite{teplitz05a}); $^7$ Vaccari et~al. (\cite{vaccari05}); $^8$ Fadda et~al. (\cite{fadda04});
$^9$ Elbaz et~al. (\cite{elbaz99}); $^{10}$ Rodighiero et~al. (\cite{rodighiero04}); $^{11}$ Pozzi et~al. (\cite{pozzi03});
$^{12}$ Flores et~al. (\cite{flores99}); $^{13}$~Metcalfe  et~al. (\cite{metcalfe03}); $^{14}$ Oliver et~al. (\cite{oliver02}); $^{15}$ Serjeant et~al. (\cite{serjeant97}); $^{16}$ Altieri et~al. (\cite{altieri99}).}
\end{table}