\begin{table}%t4 \caption{\label{tab:3bbtot}Temperature, radius and observed flux (0.6--10~keV) evolution with time of $BB$~medium (med) and hot~$BB$~(hot) in the 3$BB$~model with 1$\sigma$ uncertainties.} %\centerline {\small \begin{tabular}{cccc} \hline\hline Epoch & $kT_{\rm med}$ & $R_{\rm med}$ & $F_{\rm med}$\\ & keV & km & erg~s$^{-1}$~cm$^{-2}$\\ \hline \noalign{\smallskip} Sep. 03& $0.267\pm0.009 $&$6.9\pm0.6 $&$(5\pm 1)\times10^{-12} $\\ Mar. 04& $0.29\pm0.01 $&$4.9\pm0.4 $&$(4\pm 1)\times10^{-12} $\\ Sep. 04& $0.271\pm0.006 $&$4.8\pm0.3 $&$(2.6\pm0.5)\times10^{-12} $\\ Mar. 05& $0.264\pm0.007 $&$3.9\pm0.3 $&$(1.5\pm0.3)\times10^{-12} $\\ Sep. 05& $0.280\pm0.009 $&$2.6\pm0.2 $&$(9 \pm 2)\times10^{-13} $\\ Mar. 06& $0.28\pm0.01 $&$2.0\pm0.2 $&$(6 \pm 2)\times10^{-13} $\\ Sep. 06& $0.304\pm0.006 $&$1.5\pm0.1 $&$(5 \pm 1)\times10^{-13} $\\ Mar. 07& $0.296\pm0.006 $&$1.5\pm0.2 $&$(4 \pm 1)\times10^{-13} $\\ Sep. 07& $0.308\pm0.006 $&$1.3\pm0.1 $&$(4 \pm1 )\times10^{-13} $\\ Sep. 06--07&$0.301\pm0.003$ & $1.42\pm0.03$& $(4.1\pm0.2)\times10^{-13}$\\[3mm] Epoch & $kT_{\rm hot}$ & $R_{\rm hot}$ & $F_{\rm hot}$\\ & keV & km & erg$~\rm s^{-1}~ cm^{-2}$\\ Sep. 03&$0.681\pm 0.005 $ &$1.58 \pm 0.04 $ &$(3.3 \pm 0.2)\times10^{-11} $ \\ Mar. 04&$0.70\pm 0.01 $ &$1.07 \pm 0.04 $ &$(1.7 \pm 0.2)\times10^{-11} $\\ Sep. 04&$0.68\pm 0.05 $ &$0.83 \pm 0.02 $ &$(9.2 \pm 0.7)\times10^{-12} $\\ Mar. 05&$0.61\pm 0.08 $ &$0.66 \pm 0.03 $ &$(3.5 \pm 0.5)\times10^{-12} $\\ Sep. 05&$0.62\pm 0.03 $ &$0.31 \pm 0.05 $ &($8 \pm 4)\times10^{-13} $\\ Mar. 06&$0.61\pm 0.05 $ &$0.22 \pm 0.07 $ &$(4 \pm 3)\times10^{-13}$\\ Sep. 06&$0.65 $$^a$ &$<$0.08 &$<$$8.7\times 10^{-14}$ \\ Mar. 07&$0.65 $$^a$ &$<$0.06 &$<$$6.1 \times 10^{-14}$ \\ Sep. 07&$0.65 $$^a$ &$<$0.06 &$<$$5.4\times 10^{-14} $\\ Sep. 06--07&$0.65 $ $^a$ & $<$0.05 & $<$$4.5 \times 10^{-14}$\\ \hline \end{tabular}} \medskip $^a$~Fixed to the average of the earliest measurements. Upper limits are inferred at 3$\sigma$ confidence level. $kT_{\rm cold}=0.144\pm0.003$~keV; $R_{\rm cold}= 17.9 \pm^{1.9}_{1.5}$~km, $N_{\rm H}=(0.72\pm0.02)\times10^{22}$~cm$^{-2}$ are constant throughout the outburst. \end{table}