\begin{table}%t1
\caption{\label{tab:1}Line fluxes observed towards HH~46 with PACS.}
\par
%\centerline
$$
\begin{tabular}{l@{\extracolsep{2pt}}ccr l@{\extracolsep{2pt}}c r@{\extracolsep{0pt}}c r}
\hline \hline
Spec.       & Trans.                       & $\lambda$ ($\mu$m) & Flux\tablefootmark{a}   & Spec.  & Trans.                                                                    & & $\lambda$ ($\mu$m) & Flux\tablefootmark{a} \\
\hline
CO          & 14--13                       & 186.0              & 48\tablefootmark{}    & H$_2$O & 2$_{21}$--2$_{12}$                                                        & & 180.5              & $<$7\tablefootmark{c} \\
            & 16--15                       & 162.8              & 46\tablefootmark{}    &        & 2$_{12}$--1$_{01}$                                                        & & 179.5              & 4:\phantom\tablefootmark{} \\
            & 18--17                       & 144.8              & 71\tablefootmark{}    &        & 3$_{03}$--2$_{12}$                                                        & & 174.6              & $<$22\tablefootmark{c} \\
            & 22--21                       & 118.6              & 33\tablefootmark{}    &        & 3$_{13}$--2$_{02}$                                                        & & 138.5              & 14\tablefootmark{} \\
            & 23--22                       & 113.5              & 78\tablefootmark{b}              &        & 4$_{04}$--3$_{13}$                                                        & & 125.4              & $<$18\tablefootmark{c} \\
            & 24--23                       & 108.8              & 18\phantom\tablefootmark{}    &        & 4$_{14}$--3$_{03}$                                                        & & 113.5              & 78\tablefootmark{b} \\
            & 29--28                       & \phantom{0}90.2    & 18\tablefootmark{}    &        & 2$_{21}$--1$_{10}$                                                        & & 108.1              & 17\tablefootmark{} \\
            & 30--29                       & \phantom{0}87.2    & 25:~                     &        & 3$_{22}$--2$_{11}$                                                        & & \phantom{0}90.0    & $<$27\tablefootmark{c} \\
            & 31--30                       & \phantom{0}84.4    & 74\tablefootmark{b}              &        & 8$_{18}$--7$_{07}$                                                        & & \phantom{0}63.3    & $<$33\tablefootmark{c} \\
            & 32--31                       & \phantom{0}81.8    & $<$29\tablefootmark{c}             & \multirow{2}{*}{OH\tablefootmark{e}} & \multirow{2}{*}{$\frac{1}{2}$,$\frac{3}{2}$--$\frac{1}{2}$,$\frac{1}{2}$} & \multirow{2}{*}{\bigg\{} & 163.4              & $<$27\tablefootmark{c} \\
            & 33--32                       & \phantom{0}79.4    & $<$17\tablefootmark{c}  &        &                                                                           & & 163.0              & 22\phantom{\tablefootmark{b}} \\
            & 36--35                       & \phantom{0}72.8    & $<$23\tablefootmark{c}  &        & \multirow{2}{*}{$\frac{3}{2}$,$\frac{5}{2}$--$\frac{3}{2}$,$\frac{3}{2}$} & \multirow{2}{*}{\bigg\{} & 119.4              & 44\phantom{\tablefootmark{b}} \\
\ion{C}{ii} & $^2$P$_{3/2}$--$^2$P$_{1/2}$ & 157.7              & 73{\tablefootmark{}}    &        &                                                                           & & 119.2              & 38\phantom{\tablefootmark{b}} \\
\ion{O}{i}  & $^3$P$_1$--$^3$P$_2$         & \phantom{0}63.2    & 1260{\tablefootmark{}}  &        & \multirow{2}{*}{$\frac{3}{2}$,$\frac{7}{2}$--$\frac{3}{2}$,$\frac{5}{2}$} & \multirow{2}{*}{\bigg\{} & \phantom{0}84.6    & 87{\tablefootmark{}} \\
            & $^3$P$_0$--$^3$P$_2$         & 145.5              & 82{\tablefootmark{}}    &        &                                                                           & & \phantom{0}84.4    & 74\tablefootmark{b} \\
Blue\tablefootmark{d} & $^3$P$_1$--$^3$P$_2$      & \phantom{0}63.2    & 162\phantom{\tablefootmark{b}}   &        & \multirow{2}{*}{$\frac{1}{2}$,$\frac{1}{2}$--$\frac{3}{2}$,$\frac{3}{2}$} & \multirow{2}{*}{\bigg\{} & \phantom{0}79.2    & 38\tablefootmark{} \\
            &                              &                    &                  &        &                                                                           & & \phantom{0}79.1    & 55\phantom{\tablefootmark{b}} \\
\hline
\end{tabular}
$$
\tablefoot{\tablefoottext{a}{Flux in the central spaxel, in 10$^{-18}$ W m$^{-2}$. Values with colons indicate weak detections or detections in only one nod.} \tablefoottext{b}{Lines blended.} \tablefoottext{c}{3$\sigma$ upper limit.}
\tablefoottext{d}{Blue-shifted [\ion{O}{i}] component at $\varv=-170$~km~s$^{-1}$.} \tablefoottext{e}{Doublet transitions.}} 
\end{table}