\begin{table}%t15 \caption{\label{table15}A comparison of the results obtained by the interactive and the automatic method (upper and lower parts of the table, respectively) for the 8~selected months during 1998$-$1999, see also Tables~\ref{table1} and~\ref{table2}.} %\centering \par \begin{tabular}{lllll} \hline \hline \noalign{\smallskip} $N$ &$A \pm M_A$ &$B \pm M_B$ &$C \pm M_C$ & Remark \\ \hline 1253 &$14.62 \pm 0.03$&$-3.36 \pm 0.09$& 0 & 1 \\ 1253 &$14.54 \pm 0.04$&$-2.31 \pm 0.30$&$-1.53 \pm 0.41$& 2 \\ 1253 &$14.52 \pm 0.03$&$-1.98 \pm 0.05$&$-1.98 \pm 0.05$& 3 \\ \hline 3473 &$14.53 \pm 0.02$&$-2.98 \pm 0.08$& 0 & 4 \\ 3473 &$14.49 \pm 0.03$&$-2.53 \pm 0.22$&$-0.73 \pm 0.33$& 5 \\ 3473 &$14.43 \pm 0.02$&$-1.81 \pm 0.05$&$-1.81 \pm 0.05$& 6 \\ \hline \end{tabular} \tablefoot {1. 2nd filter, $C=0$, interactive method. 2.~2nd filter, $C\ne0$, interactive method. 3.~2nd filter, $B=C$, interactive method. 4.~2nd filter, $C=0$, automatic method. 5.~2nd filter, $C\ne0$, automatic method. 6.~2nd filter, $B=C$, automatic method.} \end{table}