\begin{table}%t1
  \caption{\label{summary}Summary of measured rms values when modeling all sunspots.} 
\small%\centering
\par
    \begin{tabular}{l l l l}
\hline\hline\noalign{\smallskip} 
      & RV (m/s)      &   BSV  (m/s)      & Phot \\
\hline \noalign{\smallskip} 
${\rm rms}_{\rm all }$& 4.35~$\times$~10$^{-1}$ &        2.0~$\times$~10$^{-2}$  &    6.1$\times$10$^{-4}$ \\ ${\rm rms}_{\rm low} $ & 1.60~$\times$~10$^{-1}$    &   7.9~$\times$~10$^{-3}$   &      1.9~$\times$~10$^{-4}$ \\ 
${\rm rms}_{\rm high}$ &        5.88~$\times$~10$^{-1}$     &   2.6~$\times$~10$^{-2}$  &    6.9~$\times$~10$^{-4}$\\
\noalign{\smallskip}  \hline
    \end{tabular}
 \tablefoot{RV~(Col.~2); BVS (Col.~3); fr: fraction of the Sun covered by spots (Col.~3); Phot: relative photometry (Col.~4). The subscript  {\it all}  refers to the whole cycle; the subscript ${\it low}$ (resp. ${\it high}$) refers to the low (resp. high) activity period.}
\end{table}