\begin{table}%t2
      \caption{\label{dataset}Datasets for the HESS~campaigns on \psrbss\ in 2005, 2006 and 2007. }  
 %\centerline
{\small
 \begin{tabular}{lcccccccccc}
            \hline
            \noalign{\smallskip}
            Period  & $\tau$/[d] & $\theta$   & $\phi$ & $t$/[h] & $N_{\rm ON}$ & $N_{\rm OFF}$ & $\alpha$ & $N_{\gamma}$ & $S_{\rm Hillas}^{*}$ / $[{\rm \sigma}]$ & $S_{\rm Model}^{**}/[\sigma]$\\
  \noalign{\smallskip}
            \hline
	2005& 386 & 0.47 & 0.31 &8.3 & 347 & 6909 & 0.047 & 22.7 &1.2 & 1.2\\
	2006& $-454$ & $-0.48$ & $-0.37$ & 6.9 & 271 & 3201 & 0.079 & 18.0 &1.1 & 0.5\\
	\hline
	2007& & & & & & & & & &\\
 	April& $-104$ & $-0.40$ & $-0.084$ & 5.3 & 205 & 2571 & 0.074 & 15.8 & 1.1 & 2.9\\
 	May& $-74$ & $-0.38$ & $-0.060$ & 14.6 & 623 & 7280 & 0.074 & 84.4 & 3.4 & 5.8\\
 	June& $-46$ & $-0.35$ & $-0.037$ & 15.5 & 843 & 8373 & 0.073 & 228.8 & 8.4 & 9.3\\
 	July& $-17$ & $-0.25$ & $-0.014$ & 14.4 & 575 & 6238 & 0.077 & 96.4 & 4.1 & 7.4\\
	August&9 & 0.17 & 0.007 & 3.2 & 124 & 1383 & 0.073 & 22.9 & 2.1 & 0.9\\
        \hline
	2007 Total&... &... &... & 52.5 & 2353 & 25633 & 0.074 & 448.7 & 9.5 & 13.2 \\
	 \hline
         \end{tabular}}\smallskip
\par
Shown are the days relative to periastron $\tau$, the true anomaly $\theta$, the orbital phase (mean anomaly) $\phi$, the livetime $t$, the number of ON and OFF events $N_{\rm ON}, N_{\rm OFF}$, the background normalisation $\alpha$ and the number of excess photons $N_{\gamma}$ for the Hillas type analysis for each observation period. The significances $S$ according to \cite{LiMa} are shown for both analysis techniques, as outlined in the text.\\
$^{{\rm *}}$ Standard HESS~analysis based on Hillas moments.\\
$^{{\rm **}}$ HESS~semi-analytical model analysis used as cross check.
   \end{table}