\begin{table}%t1
%\centering
\par
\caption{Journal of observations: begin and end of the run, the number
of observations $n,$ the mean values $\langle m\rangle$ and rms deviations of the mean~$\sigma_m$ and the filter.\label{tab1}}
\begin{tabular}{lcrrcc}
\hline\hline
$t_{\rm start},$ 24.....&$t_{\rm end},$ 24.....&\hfill$n$\hfill&$\hfill\langle m\rangle$\hfill&$\sigma_m$&Filter\\
\hline
52~635.2721& 52~635.3388&~~95& 15.052& 0.147&$V$\\
52~638.2627& 52~638.3379&~177& 14.941& 0.137&$V$\\
53~035.0390& 53~035.1655&~217& 15.042& 0.176&$V$\\
53~036.1058& 53~036.2677&~278& 14.953& 0.163&$V$\\
53~052.9374& 53~053.1193&~299& 15.023& 0.171&$V$\\
53~383.0829& 53~383.1145&~~18& 15.046& 0.147&$V$\\
53~383.0838& 53~383.1153&~~17& ~2.800& 0.149&$R$\\
53~384.1352& 53~384.1648&~~14& 14.914& 0.173&$V$\\
53~384.1365& 53~384.1657&~~14& ~2.678& 0.171&$R$\\
53~385.9945& 53~386.1484&~~66& 15.049& 0.193&$V$\\
53~385.9955& 53~386.1494&~~69& ~2.811& 0.184&$R$\\
53~404.9714& 53~405.1264&~~72& 15.077& 0.206&$V$\\
53~404.9726& 53~405.1250&~~70& ~2.848& 0.197&$R$\\
52~635.2721& 53~405.1264&1236& 15.005& 0.173&all $V$\\
53~383.0838& 53~405.1250&~170& ~2.814& 0.189&all $R$\\
\hline          
\end{tabular}
\end{table}