\begin{table}%T1
%\centering
\small
\caption{The definition of the characteristic parameters of the \ion{Ca}{ii}~H~profile 
for the peak sample (upper part) and the band sample (lower part) (see also Fig.~\ref{f2}). 
Wavelengths are in nm.}\label{t1}
\begin{tabular}{c c} 
\hline\hline
quantity: peak sample & description  \\ \hline
$H_3$  &   core intensity\\
$H_{2{\rm v}}$  &    violet emission peak\\
$H_{2{\rm r}}$  &   red emission peak\\
{\it V/R}       &   $H_{2{\rm v}}$/$H_{2{\rm r}}$\\
emission strength &  $H_{2{\rm v}}$/$H_3$ \\
$\lambda$($H_3$)  &  calcium core wavelength\\
$\lambda$($H_{2{\rm v}}$)  &  $H_{2{\rm v}}$ wavelength\\
$\lambda$($H_{2{\rm r}}$)  &  $H_{2{\rm r}}$ wavelength\\\hline
quantity: band sample & description  \\ \hline
$H$-index  &   396.849~$\pm$~0.050\\ %1~{\AA} filter  around core\\
$H_3$     & 396.849~$\pm$~0.008 \\
$H_{2{\rm v}}$ & 396.833~$\pm$~0.008  \\
$H_{2{\rm r}}$ & 396.865~$\pm$~0.008 \\
$W$1  & outer wing: 396.632~$\pm$~0.005  \\
$W$2  & middle wing:  396.713~$\pm$~0.010   \\
$W$3  & inner wing:  396.774~$\pm$~0.010   \\
\hline
\end{tabular}
\end{table}