\begin{table}%t3
\renewcommand{\thetable}{\arabic{table}a}
%\centering
\par
\caption{Photometric data on hot post-AGB stars.}\label{t3a}
\begin{tabular}{cccccccccccc}
 \hline\hline
IRAS &  $U$  &  $B$  & $V$   &  $R$  & $I$   & $J$   & $H$   & $K$   & $L$   & $L^{'}$ & $M$ \\ 
     & mag & mag & mag & mag & mag & mag & mag & mag & mag & mag     & mag \\
 \hline 
12584--4837 &       & 10.65$^{a}$ & 10.58$^{a}$ &  &  & 9.99$^{b}$ & 9.14$^{b}$ & 7.49$^{b}$ & & 
4.53$^{b}$ & 3.59$^{b}$ \\
           &       &             &             &  &  & 10.18$^{e}$ & 9.42$^{e}$ & 7.80$^{e}$ & &
           &            \\      
13266--5551 & 10.33$^{c}$ & 10.99$^{c}$ & 10.68$^{c}$ &  &  & 9.96$^{d}$ & 9.84$^{d}$ & 9.70$^{d}$
& & & \\
14331--6435 & 11.11$^{c}$ & 11.48$^{c}$ & 10.90$^{c}$ &  &  & 9.35$^{d}$ & 9.03$^{d}$ & 8.72$^{d}$ 
& & & \\
16206--5956 &  9.87$^{c}$ & 10.07$^{c}$ & 9.76$^{c}$  &  &  & 9.00$^{e}$ & 8.87$^{e}$  & 8.71$^{e}$ & & & \\
17203--1534 &       & 12.37$^{a}$ & 12.02$^{a}$ &  &  & 10.95$^{e}$ & 10.81$^{e}$ & 10.66$^{e}$ 
& & & \\
17311--4924 & 10.52$^{f}$ & 11.08$^{f}$ & 10.68$^{f}$ &  &  & 9.74$^{d}$ & 9.54$^{d}$ & 9.19$^{d}$ 
& & & \\
17423--1755 & 13.57$^{g}$ & 13.3$^{h}$ & 12.64$^{g}$ & 11.75$^{g}$ & 10.91$^{g}$ & 9.61$^{d}$ & 8.32$^{d}$ & 6.80$^{d}$ & & & \\
17460--3114 & 7.45$^{c}$ & 8.17$^{c}$ & 7.94$^{c}$ &  &  & 7.32$^{e}$ & 7.31$^{e}$ & 7.26$^{e}$ 
& & & \\
18023--3409 & 11.70$^{c}$ & 12.01$^{c}$ & 11.55$^{c}$ & & & & & & & & \\
18062+2410 & 10.86$^{i}$ & 11.59$^{i}$ & 11.54$^{i}$ & & & 11.22$^{d}$ & 10.97$^{d}$ & 10.84$^{d}$;
10.21$^{j}$ & 9.61$^{j}$ & & 7.30$^{j}$ \\ 
           &             &             &             & & & 11.36$^{e}$ & 11.33$^{e}$ & 11.23$^{e}$
           &             & &            \\
18371--3159 & & 12.09$^{a}$ & 11.98$^{a}$ & & & & & & & & \\
18379--1707 & 11.94$^{c}$ & 12.38$^{c}$ & 11.93$^{c}$ & & & 10.76$^{d}$ & 10.55$^{d}$ & 10.33$^{d}$ 
& & & \\
           &             &             &             & & & 10.66$^{e}$ & 10.43$^{e}$ & 10.16$^{e}$
& & & \\
19590--1249 & 10.75$^{k}$ & 11.41$^{k}$ & 11.32$^{k}$ & & & 11.08$^{d}$ & 10.96$^{d}$ & 10.78$^{d}$ 
& & 10.34$^{l}$ & \\
22023+5249 &  & 13.21$^{a}$ & 12.52$^{a}$ & & & 11.30$^{d}$ & 11.11$^{d}$ & 10.83$^{d}$ & & & \\
22495+5134 &  & 12.00$^{a}$ & 11.78$^{a}$ &  &  & 11.82$^{e}$ & 11.76$^{e}$ & 11.57$^{e}$ & & & \\
\par
\hline
\end{tabular}
Photometry is from : $^{a}$ Hog et~al. (\cite{Hog00}); $^{b}$ Fouque et~al. (\cite{Fou92});
$^{c}$ Reed (\cite{Ree98}); $^{d}$ Garc\'ia-Lario et~al. (\cite{Gar97b}b); $^{e}$ 2MASS; $^{f}$~Kozok (\cite{Koz85});
$^{g}$ Gauba et~al. (\cite{Gau03a}); $^{h}$ Monet et~al. (\cite{Mon98}); $^{i}$ Arkhipova et~al. (\cite{Ark99}); $^{j}$ Lawrence et~al. (\cite{Law90}); $^{k}$ Arkhipova et~al. (\cite{Ark02}), $^{l}$ Conlon et~al. (\cite{Con93a}a). 
\end{table}