\begin{table}%t1
\caption{\label{tab:obs}Observing log of the SN~search fields. For each field, when observations in a given band are available, we report the measure of the seeing in arcsec ({\it FWHM} on the stellar objects on the combined image). }
%\centering
\par
\begin{tabular}{lccccccccccccccc}
\hline
\hline
Field           & \multicolumn{3}{c}{J1888} &
                  \multicolumn{3}{c}{AXAF}  &
                  \multicolumn{3}{c}{10Z2}  & 
                  \multicolumn{3}{c}{13Z3}  & 
                  \multicolumn{3}{c}{Field2} \\
RA (2000.0)   & \multicolumn{3}{r}{00h 57m 35.4s}  &
                  \multicolumn{3}{r}{03h 32m 23.7s}  & 
                  \multicolumn{3}{r}{10h 46m 45.8s}  & 
                  \multicolumn{3}{r}{13h 44m 28.3s}  & 
                  \multicolumn{3}{r}{19h 12m 51.9s}  \\
Dec            & \multicolumn{3}{r}{$-$27d 39m 16s} &
                  \multicolumn{3}{r}{$-$27d 55m 52s} & 
                  \multicolumn{3}{r}{$-$00d 10m 03s} & 
                  \multicolumn{3}{r}{$-$00d 07m 47s} & 
                  \multicolumn{3}{r}{$-$64d 16m 31s} \\ 
\hline
  run            & $B$  & $V$ & $R$  & $B $ & $V$ & $R$ & $B$ & $V $& $R $&  $B$ &$ V$ &$ R$ &$ B$  & $V$ & $R$  \\
\hline
1999/02/23       &    &   &    &    &   &   &1.1&   &   & 1.1&   &   &    &   &    \\
1999/03/10       &    &   &    &    &   &   &1.1&1.3&   & 1.2&1.2&   &    &   &    \\
1999/03/19       &    &   &    &    &   &   &1.0&0.9&   & 1.0&0.8&   &    &   &    \\
1999/05/08       &    &   &    &    &   &   &1.3&1.4&   & 1.4&   &   & 1.9&1.6&1.0 \\  
1999/05/17       &    &   &    &    &   &   &0.8&0.9&1.0& 1.7&1.0&0.9& 0.7&0.8&    \\    
1999/08/03       & 1.0&1.4&1.3 &    &   &   &   &   &   & 1.4&   &   & 1.1&1.8&    \\  
1999/09/13       & 1.6&1.4&1.2 &    &1.2&   &   &   &   &    &   &   &    &1.7&    \\   
1999/11/09       & 1.0&0.8&    & 1.1&1.0&   &   &   &   &    &   &   &    &   &    \\
1999/12/02       &    &1.0&    & 1.0&1.1&   &   &   &   &    &   &   &    &   &    \\
1999/12/10       &    &1.7&    &    &   &   &   &1.3&   &    &   &   &    &   &    \\
1999/12/28       &    &1.9&    &    &1.2&   &   &   &   &    &   &   &    &   &    \\
2000/11/16       &    &1.0&    &    &0.9&   &   &   &   &    &   &   &    &   &    \\
2000/12/17       &    &1.0&    &    &0.9&   &   &   &   &    &   &   &    &   &    \\
2001/04/18       &    &   &    &    &   &   &   &1.0&   &    &0.9&   &    &0.8&    \\  
2001/11/11-12    &    &0.7&1.2 &    &1.0&0.9&   &   &   &    &   &   &    &   &    \\
2001/11/18       &    &1.0&    &    &0.8&   &   &   &   &    &   &   &    &   &    \\
2001/12/08-09    &    &0.9&0.8 &    &1.0&0.8&   &   &   &    &   &   &    &   &    \\
2002/04/07-08    &    &   &    &    &   &   &   &1.9&0.9&    &0.8&1.1&    &1.3&1.3  \\
\hline
\end{tabular}
\end{table}