\begin{table}%t3
\caption{\label{table:EBL_estimates}Estimated level of the CIRB for the individual fields.}
\small%\centerline
 {
\begin{tabular}{lrrr}
\hline \hline
Field   &   $I$(90 $\mu$m) & $I$(150 $\mu$m) & $I$(180 $\mu$m) \\
        &   (MJy~sr$^{-1}$) &   (MJy~sr$^{-1}$) &   (MJy~sr$^{-1}$) \\
\hline \hline
EBL22       &   --2.16 (1.04)  &   0.53 (0.52) &   0.91 (0.47)  \\ 
EBL26$^1$   &   --1.28 (3.05)  &  --1.53 (1.73) &   0.29 (1.53)  \\ 
NGP         &    0.35 (0.74)  &   1.15 (0.37) &   1.48 (0.28)  \\ 
average     &   --0.54 (0.65)  &   0.83 (0.41) &   1.26 (0.37)  \\
\hline
\end{tabular}}
\medskip
The values correspond to the difference between the offsets listed in Table~\ref{table:fit} and the
ZL estimates of Table~\ref{table:ZL_estimates}. No colour correction was applied. The 1-$\sigma$ estimated statistical errors are given in parentheses (see text). \\
$^1$~Fit to data with $W({\rm HI})<$ 200~K~km~s$^{-1}$ only.
\end{table}