\begin{table}%t3
\caption{\label{table_lc}
Light curve properties of the HESS\ 2004 data. The integrated flux
$F(>$$380~{\rm GeV})$ was calculated assuming a photon index $\Gamma
= 2.7$ (see text). For the daily integral flux light curve of each
period the following properties are given: the $\chi^2$/${\rm ndf}$
for a fit to a constant flux, and the slope $a$ and significance $S_a
= \left|a\right|$/$\sigma_a$ of an increasing or declining flux after
fitting a straight line $F(t_{\rm MJD})=a t_{\rm MJD} + F(0)$ ($t_{\rm
MJD}$ is the Modified Julian Date), together with the corresponding
$\chi^2_{\rm line}/{\rm ndf}$.}
%\centerline

\begin{tabular}{cccccc}
\hline\hline
Period
 & $F(>$$380~{\rm GeV})$
 & $\chi^2_{\rm const}/$
 & $a\;[10^{-9}\rm~cm^{-2}$
 & $\chi^2_{\rm line}/$
 & $S_a$
\\
2004
 & $[10^{-12}~{\rm cm}^{-2}~{\rm s}^{-1}]$
 & ${\rm ndf}$
 & $\rm~s^{-1}~MJD^{-1}]$
 & ${\rm ndf}$
 & $[\sigma]$
\\
\hline
February
 & $5.9\pm0.6$ & $9.4/5$ & $-10\pm5$ & $4.3/4$ & 2.2 \\
March
 & $2.8\pm0.4$ & $31.9/9$ & $7.1\pm1.5$ & $8.9/8$ & 4.6 \\
April
 & $5.1\pm0.7$ & $4.2/5$ & $-4.4\pm2.4$ & $0.8/4$ & 1.8 \\
May
 & $2.4\pm0.5$ & $4.0/7$ & $-1.6\pm1.2$ & $2.2/6$ & 1.3 \\
June
 & $<$$2.0~^*$ & $4.3/5$ & $-0.5\pm3.1$ & $4.3/4$ & 0.2 \\
\hline
\end{tabular}
\smallskip
{{\footnotesize $^*$ 99\% CL, calculated according to \citet{Feldman:1}.}} 
\end{table}