\begin{table}%f4
\caption{Parameters of the Ca stratification and isotopic anomaly determined for magnetic CP stars. }\label{ca_strat_tbl}
%\begin{center}
\par
\begin{tabular}{r|cccc|cc|c}
\hline \hline 
 HD~~~  & \multicolumn{4}{c|}{Stratification parameters}   
        & \multicolumn{2}{c|}{Ca isotopic anomaly} & Comment  \\
 number & $\log ({\rm Ca}/N_{\rm tot})_{\rm up}$ & $\log ({\rm Ca}/N_{\rm tot})_{\rm lo}$
        & $\log\tau_{\rm 5000}({\rm step})$ & $\Delta\log\tau_{\rm 5000}({\rm step})$
        & $\log\tau_{\rm 5000}({\rm isot})$ & isotope & \\
\hline
   965 & ~$-8.4$ & $-4.9$ & $-0.7$ & 0.1 & $-4.9$ & $^{46}$Ca      & $a,d$ \\   %  744/53
 24712 & ~$-8.7$ & $-5.1$ & $-1.2$ & 2.5 & $-1.4$ & $^{46}$Ca      & $c,d$ \\   %  507/173
 29578 & ~$-8.9$ & $-4.3$ & $-1.2$ & 0.7 &         &                &  \\      %  1257/
 47103 & ~$-7.7$ & $-4.6$ & $-0.8$ & 0.3 &         &                &  \\      %   585/
 66318 & ~$-8.0$ & $-5.0$ & $-0.6$ & 1.1 &         &                &  \\      %   197/
 75445 & ~$-8.9$ & $-4.9$ & $-0.9$ & 0.2 & $-2.0$ & $^{48}$Ca      &  \\      %   591/36       
101065 & ~$-8.9$ & $-5.3$ & $-0.4$ & 0.4 & $-0.2$ & $^{48}$Ca      &  \\      %   114/139
111133 & $-10.0$ & $-6.3$ & $-2.0$ & 0.4 & $-1.5$ & $^{44}$Ca      &  \\      %   131/129
116114 & ~$-7.4$ & $-4.7$ & $-1.3$ & 0.2 & $-3.8$ & $^{48}$Ca      & $b$ \\   %   938/38
118022 & ~$-7.0$ & $-2.0$ & $-0.1$ & 0.3 & $-1.5$ & $^{48}$Ca      &  \\      %   159/112
122970 & ~$-7.7$ & $-5.1$ & $-1.5$ & 2.8 & $-1.6$ & $^{46}$Ca      & $c,d$ \\   %  755/226
128898 & ~$-8.5$ & $-4.0$ & $-1.0$ & 2.0 & $-1.9$ & $^{48}$Ca      & $c,d$ \\   %  839/62
133792 & ~$-8.1$ & $-5.6$ & $-0.6$ & 0.1 & $-1.0$ & $^{48}$Ca      &  \\      %   52/48
134214 & ~$-8.4$ & $-4.8$ & $-0.9$ & 0.9 & $-1.5$ & $^{48}$Ca      &  \\      %  693/115
137909 & ~$-8.2$ & $-4.4$ & $-1.0$ & 0.4 & $-4.4$ & $^{48}$Ca      & $a$ \\   %  885/48
137949 & ~$-9.6$ & $-3.5$ & $-1.0$ & 1.8 & $-4.9$ & $^{48}$Ca      & $a,c$ \\  % 1351/33.5
144897 & ~$-8.5$ & $-5.2$ & $-1.9$  & 0.5  &         &                &  \\     %  268/  
166473 & ~$-8.5$ & $-3.8$ & $-1.0$ & 1.1 &         &                &  $d$  \\       %  1153/
170973 & ~$-5.3$ & $-5.0$ & $-1.1$ & 0.1 &         &                &  \\       %   163/  unif with Ca:=5.16
176232 & ~$-9.0$ & $-4.1$ & $-1.2$ & 1.8 & $-1.2$ & $^{48}$Ca      &   $d$ \\       %  940/131
188041 & ~$-7.4$ & $-3.1$ & $-1.2$ & 2.5 & $-3.7$ & $^{46}$Ca      & $c,d$ \\  % 1000/53.3
203932 & ~$-8.7$ & $-4.5$ & $-1.2$ & 2.6 & $-2.1$ & $^{48}$Ca      & $c,d$ \\    %  714/54
217522 & ~$-8.8$ & $-4.8$ & $-0.3$ & 0.7 & $-0.6$ & $^{48}$Ca      & $b$ \\
\hline               
\end{tabular}
%\end{center}
\par
The columns give HD number of stars, step-function parameters of the vertical Ca distributions 
(abundance in upper atmosphere, abundance in the lower layers, position of the abundance
jump and the width of the transition zone), parameters of the Ca isotopic separation if applicable (the optical depth of the boundary between the heavy and light Ca layers, the 
dominant isotopic component of  the heavy Ca cloud). The last column indicates deviation of the final Ca stratification profile from a simple step-function.
\par
Comments. $a$ -- abundance increase in the upper layers; $b$ -- complex transition zone; $c$ -- distortion of the step-function after  $\log \rho x$ to $\log~\tau_{\rm 5000}$ transformation; $d$ -- a change in the upper abundance value.
\end{table}