\begin{table}%t2
\caption{\label{tab2}Archival longitudinal magnetic field measurements. $^1$ Borra \& Landstreet (\cite{Borra1980}); $^2$ Glagolevski et~al. (\cite{Glagolevski1985}); $^3$ Chountonov (\cite{Chountonov2001}). Phases are calculated according to the ephemeris described in the text.}
%\centering
\par
\begin{tabular}{ccr}
\hline\hline
HJD & Phase  & $B_{\rm \ell}\pm \sigma_B$ (G)\\
\hline
$^1$2443383.775 &  0.17923 &  $    35 \pm     55 $ \\
$^1$2443384.779 &  0.60066 &  $   118 \pm     44 $    \\
$^1$2443385.829 &  0.04140 &  $   -62 \pm     48 $    \\
$^1$2443387.812 &  0.87377 &  $     5 \pm     44 $    \\
$^1$2443388.813 &  0.29394 &  $   -38 \pm     55 $    \\
\hline
$^2$2445244.427 &  0.19134 &    $    31 \pm     76 $ \\
$^2$2445245.542 &  0.65936 &    $   -52 \pm    118 $ \\
$^2$2445303.427 &  0.95670 &    $   -62 \pm     41 $ \\
$^2$2445627.233 &  0.87486 &    $   -78 \pm     54 $ \\
$^2$2445629.242 &  0.71815 &    $   +64 \pm    112 $ \\
$^2$2445690.291 &  0.34357 &    $  -138 \pm     86 $ \\
\hline
$^3$2451798.542 & 0.29319 &    $  +20 \pm     50 $ \\
$^3$2451904.250 & 0.66432 &    $  -40 \pm     60 $ \\
   \hline 
\end{tabular}
\end{table}