\begin{table}%t1
%\centering
\par
\caption{\label{evolution}Overview of the mean flare fit parameters in time.}  
\begin{tabular}[htbp]{lcccccc}
\hline\hline\noalign{\smallskip}
Spectrum & Observation time & $T_{\rm chrom}$ & $\log cmass_{T\rm chrom}$ & $\log cmass_{T\rm min}$ & grad TR & Filling factor\\
\hline
blue No.~3 & UT 23:48:16--00:04:56 & 8100 (200) & --2.3 (0.1) & --0.7 (0.3) & 11.1 (0.3) & 3.3 (0.7)/0.3 (0.2)\\
red No.~9 & UT 23:47:37--23:50:57 & 8300 (200) & --2.6 (0.3) & --0.7 (0.3) & 11.0 (0.2) & 2.2 (1.1)\\
red No.~10 & UT 23:51:56--23:55:16 & 8300 (200) & --2.7 (0.2) & --0.6 (0.3) & 11.1 (0.3) & 0.7 (0.3)\\
red No.~11 & UT 23:56:14--23:59:24 & 8200 (300) & --2.7 (0.3) & --0.7 (0.4) & 11.1 (0.3) & 0.06 (0.02)\\
blue No.~4 & UT 00:05:46--00:22:26 & 8300 (300) & --2.7 (0.3) & --0.9 (0.2) & 11.2 (0.3) & 0.1 (0.0)\\
\hline
\end{tabular}
\end{table}