\begin{table}%t5
\caption{\label{tab6} Spectral and light-curve dates of maximum for the five photometrically followed-up SN~Ia.}
%\centerline
{\begin{tabular}{cccccc}
\hline\hline
SN & HJD(civil date)$\dagger$ & \multicolumn{2}{c}{Uncorrected maximum date$\ddagger$} & \multicolumn{2}{c}{Corrected maximum date$\ast$}\\
&  &\multicolumn{2}{c}{---------------------------------------} & \multicolumn{2}{c}{---------------------------------------}\\
&  & WHT & NOT & WHT & NOT\\\hline
\object{1999dr} & 2451411.45 (20/8) & 19/8 & ... & 14/8 & ...\\
\object{1999du} & 2451444.83 (23/9) & 21/9 & 26/9 & 23/9 & 24/9\\
\object{1999dv} & 2451440.75 (19/9) & 20/9 & 23/9 & 21/9 & 21/9\\
\object{1999dx} & 2451428.52 (07/9) & 09/9 & ... & 08/9 & ...\\
\object{1999dy} & 2451438.47 (16/9) & 14/9 & ... & 14/9 & ...\\
\hline
\end{tabular}}
\par
\smallskip
\hspace*{22mm}\footnotesize{Notes:}\\
\hspace*{25mm} {\footnotesize $\dagger$ Date of $B$-band light-curve maximum.}\\
\hspace*{25mm}{\footnotesize $\ddagger$ Date estimated from the date of
  spectral observation corrected for the best-fit spectral phase.}\\
\hspace*{25mm}{\footnotesize $\ast$ Date estimated from the date of
  spectral observation corrected for the best-fit spectral phase.}\\ 
 \hspace*{28mm}{\footnotesize  Correction for time
dilation effects has been applied.}
\end{table}