\begin{table}%t1
\caption{ISO observations of \object{NGC~40} 
(in units of 10$^{-13}$ erg~cm$^{-2}$~s$^{-1}$).} \label{t1}
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{\begin{tabular}{lrcc}
\hline
\hline
Ident. &  $\lambda$($\mu$m) & Intens.(1) & Intens.(2) \\
\hline
\ion{H}{i} 6-4 & 2.626 & 12 & 66 \\
\ion{H}{i} 10-5  & 3.039 & 1.5 & 8.2 \\
\ion{H}{i} 9-5 & 3.297 & 2 & 11 \\
\ion{H}{i} & 4.052 & 25 & 137 \\
\ion{[Ar}{ii]} & 6.984 & 55 & 301 \\
\ion{[Ar}{iii]} & 8.990 & 30 & 164 \\
\ion{[Ne}{ii]} & 12.811 & 340 & 1360 \\
\ion{[Ne}{iii]} & 15.554 & 5 & 20 \\
\ion{[P}{iii]} & 17.888 & 9 & 36 \\
\ion{[S}{iii]} & 18.711 & 148 & 592 \\
\ion{[Fe}{iii]} & 22.926 & 4 & 16 \\
\ion{[O}{iv]} & 25.890 & $\leq$0.6 & $\leq$2.4 \\
\ion{[Fe}{ii]} & 25.988 & 1.0: & 4.0: \\
\ion{[S}{iii]} & 33.476 & 180 & 450 \\
\ion{[Si}{ii]} & 34.810 & 28 \\
\ion{[O}{iii]}$^{*}$ & 52 & 200 & 200 \\
\ion{[N}{iii]}$^{*}$ & 57 & 170 & 170 \\
\ion{[O}{i]}$^{*}$ & 63 & 221 & 221 \\
\ion{[O}{iii]}$^{*}$ & 88 & 119 & 119 \\ 
\ion{[N}{ii]}$^{*}$ & 122 & 32 & 32 \\
\ion{[O}{i]}$^{*}$ & 146 & 7.5 & 7.5 \\
\ion{[C}{ii]}$^{*}$ & 157 & 203 & 203 \\
\hline
\end{tabular}}
Intens.(1) are measured values; Intens.(2) are intensities corrected for the diaphragm size (see Sect.~2.1).
\par
$^{*}$ These data are from Liu et~al. (\cite{liu}).
\end{table}