\begin{table} \caption{S-corrections (mag) computed for phases up to $+$70 days$^a$.} \label{tab:S-corrections} %\centerline {\begin{tabular}{crrrr} \hline\hline MJD & $B$ & $V$ & $R$ & $I$ \\ \hline 52892.40 & 0.010 & 0.022 & 0.014 & $-$0.034 \\ 52892.47 & $-$0.003 & 0.002 & 0.036 & $-$0.017 \\ 52893.39 & 0.010 & 0.021 & 0.015 & $-$0.033 \\ 52893.41 & $-$0.004 & 0.003 & 0.036 & $-$0.018 \\ 52894.37 & 0.010 & 0.020 & 0.016 & $-$0.032 \\ 52895.37 & 0.011 & 0.017 & 0.017 & $-$0.031 \\ 52896.38 & 0.013 & 0.013 & 0.018 & $-$0.035 \\ 52896.52 & $-$0.005 & 0.007 & 0.037 & $-$0.018 \\ 52897.37 & 0.015 & 0.009 & 0.019 & $-$0.038 \\ 52897.51 & $-$0.005 & 0.008 & 0.036 & $-$0.018 \\ 52898.52 & $-$0.006 & 0.009 & 0.034 & $-$0.018 \\ 52899.52 & $-$0.006 & 0.010 & 0.032 & $-$0.018 \\ 52901.40 & 0.000 & 0.013 & 0.014 & 0.029 \\ 52901.44 & $-$0.010 & 0.010 & 0.027 & $-$0.019 \\ 52902.30 & $-$0.004 & 0.014 & 0.014 & 0.036 \\ 52902.48 & $-$0.016 & 0.010 & 0.025 & $-$0.021 \\ 52903.46 & $-$0.020 & 0.009 & 0.024 & $-$0.022 \\ 52904.49 & $-$0.022 & 0.009 & 0.021 & $-$0.023 \\ 52905.26 & 0.034 & $-$0.009 & 0.007 & $-$0.054 \\ 52905.30 & $-$0.012 & 0.015 & 0.010 & 0.057 \\ 52906.40 & $-$0.011 & 0.016 & 0.009 & 0.066 \\ 52906.48 & $-$0.018 & 0.008 & 0.018 & $-$0.025 \\ 52907.30 & $-$0.011 & 0.016 & 0.008 & 0.072 \\ 52908.30 & $-$0.012 & 0.016 & 0.008 & 0.078 \\ 52910.47 & $-$0.020 & 0.006 & 0.012 & $-$0.026 \\ 52912.47 & $-$0.023 & 0.007 & 0.013 & $-$0.024 \\ 52914.40 & $-$0.015 & 0.015 & 0.004 & 0.084 \\ 52914.46 & $-$0.028 & 0.009 & 0.015 & $-$0.020 \\ 52916.46 & $-$0.024 & 0.011 & 0.017 & $-$0.018 \\ 52919.42 & $-$0.014 & 0.015 & 0.018 & $-$0.014 \\ 52921.40 & $-$0.012 & 0.017 & 0.019 & $-$0.010 \\ 52925.43 & $-$0.011 & 0.019 & 0.020 & $-$0.007 \\ 52928.42 & $-$0.015 & 0.019 & 0.024 & $-$0.007 \\ 52929.40 & $-$0.004 & 0.022 & 0.005 & 0.096 \\ 52930.42 & $-$0.020 & 0.018 & 0.028 & $-$0.007 \\ 52932.37 & $-$0.021 & 0.018 & 0.030 & $-$0.006 \\ 52934.41 & $-$0.019 & 0.018 & 0.031 & $-$0.005 \\ 52936.40 & $-$0.015 & 0.018 & 0.030 & $-$0.005 \\ 52939.36 & $-$0.011 & 0.018 & 0.029 & $-$0.004 \\ 52942.36 & $-$0.007 & 0.017 & 0.026 & $-$0.002 \\ 52942.66 & $-$0.000 & $-$0.007 & $-$0.004 & 0.046 \\ 52945.38 & $-$0.005 & 0.017 & 0.024 & $-$0.000 \\ 52948.32 & $-$0.004 & 0.016 & 0.023 & $-$0.002 \\ 52951.30 & 0.004 & 0.016 & 0.004 & 0.084 \\ 52954.36 & $-$0.003 & 0.016 & 0.022 & $-$0.004 \\ 52959.33 & 0.004 & 0.016 & 0.019 & $-$0.004 \\ 52961.28 & 0.022 & 0.003 & 0.004 & 0.010 \\ \hline \end{tabular}} $^a~$We have used these corrections everywhere in this paper by adding them to the corresponding values of Table~\ref{tab:phot}. \end{table}