\begin{table}%t1 \caption{\label{Tab1}Log of the PMAS observations.} %\centerline {\small \begin{tabular}{lcccccccc} \hline\hline\noalign{\smallskip} Galaxy & Dist & $\log L_{\rm IR}$ & Date & Galaxy $t_{\rm int}$ & Sky $t_{\rm int}$ & Airmass & Seeing & Conditions\\ (1) & (2) & (3) & (4) & (5) & (6) & (7) & (8) & (9)\\ \hline NGC~23 & 59.6 & 11.05 & 7 Nov. 2005 & $3 \times 1000$ & 1000 & 1.06& $1.0{-}1.2$ & P\\ MCG~+12-02-001 & 64.3 & 11.44 & 18 Dec. 2006 & $4 \times 800$ & 1000 & 1.47 &1.7 & NP\\ UGC~1845 & 62.0 & 11.07 & 8 Nov. 2005 & $3 \times 900$ &900 & 1.05& $1.4{-}2.0$ & NP\\ NGC~2388 & 57.8 & 11.23: & 7 Nov. 2005 & $3 \times 1000$ & 1000 & 1.04& $1.3{-}1.1$ & P\\ MCG~+02-20-003 & 67.6 & 11.08: & 17 Dec. 2006 & $4\times 800$ & 1000 & 1.60 & 1.2 & NP\\ IC~860 & 59.1 & 11.17: & 30 May 2006 & $4\times 800$ & 1000 & 1.03& 1.7 & NP\\ NGC~5936&60.8& 11.07& 30 May 2006 & $4\times 800$ &1000 & 1.17& 1.5 & NP\\ NGC~6701 & 56.6 & 11.05 & 30 May 2006 & $1\times400 + 4\times 600$ & 800 &1.09 &1.3 & NP\\ NGC~7469 & 65.2 & 11.59 & 8~Nov. 2005 & $3 \times 900$ &900 &1.15& 1.2 & NP\\ NGC~7591 &65.5 & 11.05 & 8 Nov. 2005 & $3 \times 1000$ & 1000 & 1.32& $1.1{-}1.2$ & NP\\ NGC~7771-E & 57.1 & 11.34 & 7 Nov. 2005 & $2\times 500 + 2\times 1000$ & 1000 & 1.15 & 0.8 & P\\ NGC~7771-W & $\cdots$ &$\cdots$ & 7 Nov. 2005 & $3 \times 1000$ & 1000 & 1.06 & 0.8 & P\\ \hline \end{tabular} } \medskip Notes. -- Column~(1): galaxy. For NGC~7771 we took two different pointings to cover the approximate central $28 \arcsec \times 16 \arcsec$ region of the galaxy, as explained in the text. Columns~(2) and (3): distance (in Mpc) and IR luminosity (in $L_\odot$) taken from Sanders et~al. (\cite{sanders2003}) for the {IRAS}~RBGS. Column~(4): date of the observations. Column~(5): integration time (in seconds) of the galaxy observations after discarding bad data sets. Column~(6): integration time (in seconds) of the sky observations. Column~(7): airmass at the beginning of the observation. Column~(8): typical seeing conditions (in arcseconds) of the observations. If two values of the seeing are given they correspond to the beginning and the end of the observations. Column~(9): observing conditions. P:~Photometric. NP:~Non-photometric. \end{table}