\begin{table}%t2 \caption{\label{annual_results}Best $\chi^2$ fits of a power-law to the various spectra of PKS~2005$-$489 measured by HESS.} \small %\centering \par \begin{tabular}{c c c c c c c c} \hline\hline \noalign{\smallskip} Epoch & $E_{\rm lower}$ & $E_{\rm upper}$ & $\Gamma$ & $I_{400}$ & $\chi^2$ & NDF & $P$($\chi^2$)\\\noalign{\smallskip} & [TeV] & [TeV] & & [$10^{-11}$ cm$^{-2}$~s$^{-1}$~TeV$^{-1}$] & & & \\ \hline\noalign{\smallskip} 2004 (AH05)\tablefootmark{a} & 0.2 & 2.7 & $3.98\pm0.38_{\rm stat}\pm0.10_{\rm syst}$ & $0.74\pm0.27_{\rm stat}\pm0.15_{\rm syst}$ & 5.6 & 7 & 0.59 \\ \noalign{\smallskip} 2004\tablefootmark{b} & 0.30 & 4.0 & $3.65\pm0.39_{\rm stat}\pm0.10_{\rm syst}$ & $1.62\pm0.33_{\rm stat}\pm0.32_{\rm syst}$ & 6.7 & 7 & 0.46 \\ 2005 & 0.32 & 5.1 & $3.09\pm0.22_{\rm stat}\pm0.10_{\rm syst}$ & $1.46\pm0.28_{\rm stat}\pm0.29_{\rm syst}$ & 13.3 & 6 & 0.038\\ 2006 & 0.35 & 11 & $2.86\pm0.20_{\rm stat}\pm0.10_{\rm syst}$ & $1.28\pm0.20_{\rm stat}\pm0.26_{\rm syst}$ & 3.7 & 7 & 0.53\\ 2007\tablefootmark{c} & 0.24 & 0.75 & $3.48\pm0.68_{\rm stat}\pm0.10_{\rm syst}$ & $1.00\pm0.22_{\rm stat}\pm0.20_{\rm syst}$ & 0.6 & 2 & 0.74\\ \noalign{\smallskip} Total & 0.3 & 5.3 & $3.20\pm0.16_{\rm stat}\pm0.10_{\rm syst}$ & $1.37\pm0.17_{\rm stat}\pm0.27_{\rm syst}$ & 9.9 & 8 & 0.27\\ \hline \end{tabular} \tablefoot{\tablefoottext{a}{This (AH05) is the previously published HESS result \citep{hess_discovery} for 2004, and was not corrected for long-term changes in the optical efficiency of the system.} \tablefoottext{b}{The 2004 entry is the very same data as presented in AH05, but with a correction (see text) applied to account for relative changes in the optical throughput of the HESS array. The 2005, 2006, 2007, and total entries also have this correction applied.} \tablefoottext{c}{The 2007 spectrum is generated with the {\it spectrum cuts} \citep{HESS_1553}, see Sect.~3.2} } \end{table}