\begin{table}%t1
\caption{\label{tab1}Log of observations of Pollux (for details, see Sects. 2 and 3).}          %\centerline
{                         
\begin{tabular}{c c c c c c c c c c}     
\hline\hline               
Date          &Instrument& Stokes V  & {\it S/N}     &  HJD      &Phase & $B_{\rm l}$ & $\sigma$ & $S$-index     &RV \\
              &          &           &         &(2~450~000+)&       & G     & G      & Ca~{\sc ii} & km s$^{-1}$ \\
\hline                        
29 Sep.--02 Oct. 07 & ESPaDOnS &4          & 1196    & 4375.1    & 0.25  &--0.67   & 0.26    & 0.1090       & 3.651 \\
12 Dec.--18 Dec. 07 & NARVAL   &6          & 1792    & 4450.7    & 0.38  &--0.51   & 0.14    & 0.1234       & (3.557)   \\
31 Dec. 07     & ESPaDOnS &5          & 1327    & 4467.0    & 0.40  &--0.57   & 0.19    & 0.1081       & 3.538    \\
05 Apr. 08     & NARVAL   &4          & 1986    & 4562.4    & 0.57  &--0.15   & 0.15    & 0.1263       & 3.532    \\ 
15 Apr. 08     & NARVAL   &8          &  960    & 4572.4    & 0.58  &--0.12   & 0.23    & 0.1267       & 3.508    \\
16 Sep. 08     & NARVAL   &8          & 1566    & 4726.7    & 0.85  &--0.45   & 0.13    & 0.1249       & 3.551    \\
20 Sep.--21 Sep. 08 & NARVAL   &8          & 1328    & 4731.2    & 0.86  &--0.21   & 0.16    & 0.1262       & 3.576    \\
30 Sep. 08     & NARVAL   &8          & 1955    & 4740.7    & 0.87  &--0.27   & 0.11    & 0.1240       & 3.584    \\
21 Dec. 08     & NARVAL   &8          & 1532    & 4822.6    & 0.01  &--0.33   & 0.14    & 0.1255       & 3.616    \\
25 Feb. 09     & NARVAL   &8          & 1934    & 4888.3    & 0.12  &--0.59   & 0.11    & 0.1259       & 3.633 \\
12 Mar. 09     & NARVAL   &8          & 1190    & 4903.4    & 0.15  &--0.69   & 0.14    & 0.1239       & 3.640 \\
18 Mar. 09     & NARVAL   &15         & 1528    & 4909.4    & 0.16  &--0.56   & 0.10    & 0.1225       & (3.634) \\
18 Oct. 08     & ESPaDOnS &1          & 1839    & 4759.1    & 0.90  &--1.40   & 0.35    & 0.1102       & 3.586    \\
\hline                            
\end{tabular}}
\medskip
Notes: Individual columns report dates of observation, instrument, number of averaged Stokes $V$ series, mean peak {\it S/N} in Stokes $I$ for one spectrum, mean HJD, Phase according to Hatzes et~al. (\cite{Hatzes2006}), $B_{\rm l}$ and its error in G, the $S$-index for Ca~{\sc ii} H and K, and the radial velocity measured from the LSD Stokes $I$ profile.  
\end{table}