\begin{table}%t1
\caption{\label{spectro}Spectroscopic observations: epochs, heliocentric Julian dates at mid exposure, exposure times and sky conditions.}             
%\centering
\par
\begin{tabular}{c c c c c c} 
\hline\hline  \noalign{\smallskip}     
Date of observation (start) & HJD & $t_{\rm exp}$ & Air mass &
Seeing\tablefootmark{a} & Age of Moon\tablefootmark{b} \\ 
	& ($-$2~450~000) & (s)	 & (mid exp.)         &   ($\arcsec$)     & (d)      \\  
\hline                    
  2003-11-16T00:39:59.373 & 2959.5423 &2595 & 1.526 & 0.77 & 21.00\\
  2003-11-16T04:43:39.664 & 2959.7115 &2595 & 1.744 & 0.53 & 21.16\\ 
  2003-11-17T00:35:51.283 & 2960.5394 &2595 & 1.526 & 1.27 & 21.96\\ 
  2003-11-17T03:55:11.067 & 2960.6778 &2595 & 1.645 & 0.95 & 22.09\\ 
  2003-11-18T00:27:41.157 & 2961.5336 &2595 & 1.529 & 0.80 & 22.94\\ 
  2003-11-18T04:40:08.506 & 2961.7090 &2595 & 1.755 & 0.96 & 23.12\\ 
  2003-11-19T00:41:56.657 & 2962.5435 &2595 & 1.519 & 1.00 & 23.97\\ 
  2003-11-19T05:06:05.545 & 2962.7269 &2595 & 1.845 & 0.67 & 24.16\\ 
  2003-11-20T00:27:32.704 & 2963.5335 &2595 & 1.524 & 1.01 & 25.02\\
  2003-11-21T00:46:40.291 & 2964.5358 & 707 & 1.518 & 0.98 & 26.13\\
  2003-11-21T01:00:00.631 & 2964.5560 &2595 & 1.512 & 0.83 & 26.14\\
  2003-11-21T05:39:31.454 & 2964.7501 &2595 & 1.998 & 0.74 & 26.35\\
  2003-11-22T00:20:45.386 & 2965.5287 &2595 & 1.523 & 0.94 & 27.23\\ 
  2003-11-22T04:32:44.400 & 2965.7037 &2595 & 1.779 & 0.92 & 27.43\\ 
  2003-11-23T00:44:54.938 & 2966.5454 &2594 & 1.514 & 0.68 & 28.40\\ 
  2003-11-23T04:27:51.663 & 2966.7002 &2595 & 1.778 & 1.02 & 28.58\\ 
\hline                  
\end{tabular}
\tablefoot {\tablefoottext{a}{Average between the start and end values;}
\tablefoottext{b}{number of days elapsed since the last new moon.}}
\end{table}