\begin{table} 
\caption{Calibrated magnitudes for the local comparison stars in
Fig.~\ref{locseq}$^a$.}
 \label{tab:opticalsequence} 
%\centerline
{\begin{tabular}{cccccc}
\hline\hline
Star & $U$ & $B$ & $V$ & $R$ & $I$ \\
\hline
1     & 18.228(0.002) & 18.000(0.013) & 17.261(0.014) & 16.849(0.013) & 16.431(0.022)\\
2     & 19.712(0.329) & 19.254(0.024) & 18.071(0.019) & 17.323(0.008) & 16.644(0.019)\\
3     & 17.308(0.009) & 16.195(0.009) & 14.919(0.010) & 14.123(0.010) & 13.431(0.008)\\
4     & 17.879(0.006) & 16.738(0.013) & 15.502(0.009) & 14.731(0.010) & 14.062(0.008)\\
5     &  $\ldots$      & 16.978(0.012) & 16.428(0.016) & 16.093(0.016) & 15.766(0.005) \\
6     &  $\ldots$      & 18.612(0.014) & 17.779(0.008) & 17.253(0.008) & 16.797(0.012)\\
7     &  $\ldots$      & 16.228(0.003) & 15.754(0.002) & 15.432(0.002) & 15.123(0.003) \\
8     & 22.179(0.059) & 22.029(0.015) & 21.290(0.017) & 20.847(0.025) & 20.470(0.045)  \\
9     & 21.801(0.058) & 21.665(0.011) & 20.925(0.016) & 20.459(0.023) & 20.043(0.042)  \\
10    & 19.522(0.057) & 20.123(0.010) & 19.933(0.015) & 19.586(0.023) & 19.064(0.042)  \\
11    & 23.595(0.080) & 22.479(0.026) & 21.008(0.019) & 20.069(0.024) & 19.069(0.043)  \\
12    & 23.606(0.071) & 22.399(0.014) & 20.894(0.016) & 19.930(0.023) & 19.018(0.042)  \\
13    & 22.393(0.060) & 22.206(0.018) & 21.352(0.019) & 20.822(0.025) & 20.410(0.045)  \\
14    & 22.384(0.060) & 21.850(0.013) & 20.885(0.016) & 20.302(0.023) & 19.834(0.042)  \\
\hline
\end{tabular}} 
$^a~$Numbers in parentheses are uncertainties.
%\vspace*{1mm}
\end{table}