\begin{table}%t3
\caption{\label{tabsim}Simulated signal for a periodic variation in the outgassing.}
%\centerline
{
\begin{tabular}{lcrrr}
\hline\hline\noalign{\smallskip}
UT date  & $\langle \Delta\rangle$ & Pointing & Time delay & $\frac{\Delta{}Q_{\rm app}}{\Delta{}Q}$   \\[0cm]
[mm/dd.d] & [AU] &   offset [\arcsec] & [day]  &         \\
\hline
04/02.6   & 1.087 &  24 & 0.244 & 18\% \\
04/13.6   & 0.790 &  24 & 0.228 & 24\% \\
04/27.0   & 0.446 &  30 & 0.199 & 48\% \\
04/30.0   & 0.383 &  44 & 0.194 & 51\% \\
05/02.0   & 0.354 &  51 & 0.193 & 53\% \\
05/02.7   & 0.346 &  51 & 0.191 & 54\% \\
05/16.0   & 0.435 &  24 & 0.194 & 51\% \\
05/16.0   & 0.435 &  65 & 0.224 & 35\% \\
05/16.0   & 0.435 & 122 & 0.399 &  8\% \\
05/16.0   & 0.435 & 182 & 0.767 & 12\% \\
05/16.0   & 0.435 & 237 & 0.988 & 12\% \\
\hline
\end{tabular}}
\par
\medskip
For a nucleus outgassing rate $Q(t)=25\times(1+0.4\sin(\frac{2\pi t}{19.5~h}))\times10^{28}$~\mols$\!$.
\end{table}