\begin{table}%T7
\caption{\label{tab:hd217522}Mean longitudinal magnetic field for the time series of~HD~217522.
}
%\centering
\par
\begin{tabular}{crr|crr}
\hline\hline
MJD &\multicolumn{1}{c}{$\left<{\cal B}_z\right>$}&\multicolumn{1}{c}{$\sigma{}_z$} 
&MJD&\multicolumn{1}{c}{$\left<{\cal B}_z\right>$} &\multicolumn{1}{c}{$\sigma{}_z$}\\
&\multicolumn{1}{c}{[G]}&\multicolumn{1}{c}{[G]} & &\multicolumn{1}{c}{[G]}&\multicolumn{1}{c}{[G]} \\
\hline
52~531.108661 & $-$701 & 79 &	52~531.222581 & $-$1123 & 82 \\
52~531.112774 & $-$822 & 79 &	52~531.224908 & $-$937 & 107 \\
52~531.117013 & $-$862 & 70 &	52~531.241321 & $-$468 & 76 \\
52~531.121656 & $-$765 & 70 &	52~531.243544 & $-$695 & 76 \\
52~531.123913 & $-$789 & 70 &	52~531.245767 & $-$588 & 79 \\
52~531.126157 & $-$808 & 70 &	52~531.247992 & $-$696 & 79 \\
52~531.128421 & $-$574 & 70 &	52~531.250215 & $-$672 & 85 \\
52~531.130694 & $-$709 & 73 &	52~531.252442 & $-$717 & 85 \\
52~531.132988 & $-$640 & 70 &	52~531.254668 & $-$425 & 79 \\
52~531.135257 & $-$689 & 73 &	52~531.256897 & $-$734 & 76 \\
52~531.137511 & $-$895 & 88 &	52~531.259126 & $-$676 & 76 \\
52~531.140799 & $-$696 & 79 &	52~531.261359 & $-$651 & 79 \\
52~531.143058 & $-$655 & 70 &	52~531.263593 & $-$621 & 79 \\
52~531.145320 & $-$728 & 73 &	52~531.265828 & $-$705 & 79 \\
52~531.147573 & $-$747 & 92 &	52~531.268061 & $-$655 & 82 \\
52~531.149827 & $-$763 & 88 &	52~531.270295 & $-$629 & 76 \\
52~531.152081 & $-$682 & 79 &	52~531.272531 & $-$586 & 82 \\
52~531.154333 & $-$764 & 73 &	52~531.274774 & $-$700 & 82 \\
52~531.156587 & $-$629 & 79 &	52~531.277904 & $-$718 & 79 \\
52~531.158861 & $-$708 & 73 &	52~531.280145 & $-$661 & 79 \\
52~531.161141 & $-$699 & 73 &	52~531.282384 & $-$587 & 82 \\
52~531.163417 & $-$512 & 70 &	52~531.284626 & $-$758 & 85 \\
52~531.165710 & $-$579 & 70 &	52~531.286870 & $-$626 & 82 \\
52~531.167976 & $-$671 & 76 &	52~531.289116 & $-$784 & 82 \\
52~531.170258 & $-$553 & 76 &	52~531.291365 & $-$698 & 82 \\
52~531.172548 & $-$596 & 76 &	52~531.293614 & $-$563 & 85 \\
52~531.174977 & $-$746 & 73 &	52~531.295863 & $-$638 & 85 \\
52~531.178151 & $-$812 & 70 &	52~531.298115 & $-$756 & 85 \\
52~531.180426 & $-$742 & 70 &	52~531.300366 & $-$533 & 85 \\
52~531.182705 & $-$727 & 70 &	52~531.302620 & $-$662 & 85 \\
52~531.184983 & $-$712 & 70 &	52~531.304873 & $-$759 & 85 \\
52~531.187294 & $-$702 & 63 &	52~531.307128 & $-$656 & 92 \\
52~531.189575 & $-$661 & 66 &	52~531.309384 & $-$535 & 88 \\
52~531.191868 & $-$795 & 70 &	52~531.311642 & $-$547 & 88 \\
52~531.194151 & $-$686 & 70 &	52~531.314797 & $-$407 & 85 \\
52~531.196442 & $-$567 & 63 &	52~531.317059 & $-$595 & 88 \\
52~531.198730 & $-$695 & 73 &	52~531.319321 & $-$945 & 98 \\
52~531.201013 & $-$744 & 73 &	52~531.321589 & $-$632 & 92 \\
52~531.203297 & $-$655 & 70 &	52~531.323855 & $-$728 & 98 \\
52~531.205589 & $-$681 & 66 &	52~531.332912 & $-$735 & 111 \\
52~531.207877 & $-$691 & 66 &	52~531.335189 & $-$733 & 98 \\
52~531.210168 & $-$694 & 66 &	52~531.337471 & $-$767 & 98 \\
52~531.212455 & $-$768 & 70 &	52~531.339747 & $-$827 & 101 \\
52~531.215691 & $-$758 & 70 &	52~531.342024 & $-$556 & 98 \\
52~531.217987 & $-$592 & 70 &	52~531.344306 & $-$614 & 98 \\
52~531.220277 & $-$424 & 73 &	& & \\
\hline
\end{tabular}
\end{table}