\begin{table}%t2 \caption{\label{2007bi_sequence}Local standard stars used to calibrate the photometry of SN~2007bi to the {\it BVRI} standard Landolt system (Johnson-Cousins).} \par %\centering \par \begin{tabular}{c c c c c} \hline\hline \noalign{\smallskip} Star ID & {\it B} & {\it V} & {\it R} & {\it I} \\ \hline 1 & 17.91 $\pm$ 0.02 & 16.53 $\pm$ 0.02 & 15.60 $\pm$ 0.02 & 14.78 $\pm$ 0.01 \\ 2 & 18.27 $\pm$ 0.02 & 17.82 $\pm$ 0.01 & 17.53 $\pm$ 0.02 & 17.17 $\pm$ 0.01 \\ 3 & 18.38 $\pm$ 0.02 & 17.85 $\pm$ 0.02 & 17.52 $\pm$ 0.02 & 17.13 $\pm$ 0.01 \\ 4 & 17.15 $\pm$ 0.01 & 16.45 $\pm$ 0.01 & 15.99 $\pm$ 0.01 & 15.58 $\pm$ 0.01 \\ 5 & 17.17 $\pm$ 0.01 & 16.65 $\pm$ 0.01 & 16.31 $\pm$ 0.01 & 15.95 $\pm$ 0.01 \\ 6 & 18.56 $\pm$ 0.02 & 18.00 $\pm$ 0.02 & 17.68 $\pm$ 0.02 & 17.32 $\pm$ 0.01 \\ 7 & 19.92 $\pm$ 0.03 & 18.42 $\pm$ 0.02 & 17.50 $\pm$ 0.02 & 16.56 $\pm$ 0.01 \\ 8 & 17.08 $\pm$ 0.02 & 16.05 $\pm$ 0.01 & 15.32 $\pm$ 0.01 & 14.78 $\pm$ 0.01 \\ 9 & 19.12 $\pm$ 0.03 & 17.81 $\pm$ 0.02 & 16.89 $\pm$ 0.02 & 16.18 $\pm$ 0.01 \\ \hline \end{tabular} \end{table}