\begin{table}%t1
%\centering
\par
\caption{Grid parameters used in the 3-ray SSF models. All simulations
use 60 azimuthal zones and cover the first 10 stellar radii. We also give the
extrema of the radial and azimuthal resolutions, to compare with the Sobolev
length at mid wind-heights of ca. 0.01 $R_{\ast}$ along the three rays.}
\label{tab1}
\begin{tabular}{lcccccc}
\hline\hline
Model &  \multicolumn{2}{c}{$\delta r / R_{\ast}$} &$n_r$& $p/R_{\ast}$ &
$\delta \phi$ (rad)\\
      &      min.  & max. &           &               &                       \\
\hline
% r02
A        & $2.2\times 10^{-4}$  & 0.074 &  1737   & $\sqrt{0.9}$    & $6.65\times 10^{-4}$  \\
% r01
B        & $6.7\times 10^{-4}$  & 0.101 &  1076   & $\sqrt{0.5}$    & $6.65\times 10^{-4}$  \\
% r04
C        & $4.5 \times10^{-4}$  & 0.155 &  869    & $\sqrt{0.9}$    & $1.33\times 10^{-3}$  \\
% r03
D        & $1.3\times 10^{-3}$  & 0.220 &  539    & $\sqrt{0.5}$    & $1.33\times 10^{-3}$  \\
\hline
\end{tabular}
\end{table}