\begin{table}%t8
%\centering
\par
\caption{Results of neutron exposures. Columns~2 and~3 correspond to results of the
fittings to the theoretical predictions of \citet{malaney87a} and Cols.~4 to~7 to those of \citet{malaney87b}. 
$S\sp 2$(u), $S\sp 2$(e8), $S\sp 2$(e12) are the fit quality, respectively, for single exposure,
exponential exposure under neutron density 10$\sp 8$ cm$\sp {-3}$, and exponential exposure under
neutron density 10$\sp {12}$ cm$\sp {-3}$. $\tau_{\rm o}^{\rm a}$, $\tau_{\rm o}^{\rm b}$, and $\tau_{\rm o}^{\rm c}$ are the mean
distributions of neutron exposure corresponding to $S\sp 2$(u), $S\sp 2$(e8), and $S\sp 2$(e12),
respectively. $\tau_{\rm o}$(f) and $n\sb {\rm n}$ are results corresponding to smaller $S\sp 2$. 
Column~10
shows if the best fit corresponds to exponential (exp) or single (sing) exposure. Columns~11 to~13
correspond to the results of the fit of $\sigma N$ curves, with $\chi_{\rm red}$ as the quality of the fit.
Numbers in parenthesis are errors in last decimals and were estimated directly from the fittings.
The uncertainties on $\tau_{\rm o}^{\rm a}$, $\tau_{\rm o}^{\rm b}$, and~$\tau_{\rm o}^{\rm c}$ were estimated in 
0.1~mb$\sp {-1}$. 
For all cases, $\tau_{\rm o}$ is given in~mb$\sp {-1}$.
\label{tau}}
\begin{tabular}{lcccccclllcll}
\hline\hline
\noalign{\smallskip}
Star & $S^2$(u) & $\tau_{\rm o}^{\rm a}$ & $S^2$(e8) & $\tau_{\rm o}^{\rm b}$ & 
$S^2$(e12) & $\tau_{\rm o}^c$ & $\tau_{\rm o}$(f) & $n_{\rm n}$ &
exp & $\tau_{\rm o}$($\sigma N$) & $G$(\%) & $\chi_{\rm red}$ \\
\noalign{\smallskip}
\hline
\noalign{\smallskip}
%             S2u    tau     S2b1   tau    S2b2   tau  \tau(f)    n     exp   \tau\sigN      G(%)       chi red
HD 749	    & 0.69 & 1.00 & 0.52 & 0.80 & 0.77 & 0.80  & 0.8  & 10$^8$  & exp  & 0.406(5)  & 0.568(19)  & 0.73 \\
HR 107      & 0.98 & 0.10 & 1.47 & 0.20 & 1.30 & 0.30  & 0.1  & 10$^8$  & sing & 0.43(6)   & 0.083(20)  & 0.56 \\
HD 5424     & 0.85 & 1.10 & 1.15 & 0.80 & 1.71 & 0.80  & 1.1  & 10$^8$  & sing & 1.05(1)   & 0.086(1)   & 0.94 \\
HD 8270     & 1.33 & 0.90 & 1.21 & 0.20 & 1.46 & 0.30  & 0.2  & 10$^8$  & exp  & 0.27(1)   & 0.35(3)    & 0.41 \\
HD 12392    & 0.46 & 1.10 & 0.38 & 0.80 & 0.79 & 0.80  & 0.8  & 10$^8$  & exp  & 0.40(2)   & 0.73(3)    & 0.59 \\
HD 13551    & 1.57 & 0.90 & 1.25 & 0.20 & 1.44 & 0.30  & 0.2  & 10$^8$  & exp  & 0.22(1)   & 1.06(56)   & 0.50 \\
HD 22589    & 1.10 & 0.80 & 0.89 & 0.20 & 1.27 & 0.20  & 0.2  & 10$^8$  & exp  & 0.187(23) & 1.25(54)   & 0.52 \\
HD 27271    & 0.26 & 0.90 & 0.24 & 0.40 & 0.16 & 0.05  & 0.05 & 10$^{12}$ & exp  & 0.272(14) & 0.568(19)  & 0.35 \\
HD 48565    & 3.14 & 1.00 & 1.34 & 0.40 & 2.66 & 0.05  & 0.4  & 10$^8$  & exp  & 0.659(10) & 0.0631(23) & 0.32 \\
HD 76225    & 0.80 & 0.10 & 0.71 & 0.20 & 1.83 & 0.30  & 0.2  & 10$^8$  & exp  & 0.25(1)   & 0.83(12)   & 0.38 \\
HD 87080    & 2.22 & 1.00 & 1.17 & 0.60 & 2.49 & 0.80  & 0.6  & 10$^8$  & exp  & 0.71(1)   & 0.145(5)   & 0.48 \\
HD 89948    & 0.67 & 0.10 & 0.45 & 0.20 & 1.65 & 0.30  & 0.2  & 10$^8$  & exp  & 0.24(2)   & 0.77(36)   & 0.30 \\
HD 92545    & 1.42 & 0.90 & 1.22 & 0.20 & 0.85 & 0.30  & 0.3  & 10$^{12}$ & exp  & 0.291(3)  & 0.261(14)  & 0.40 \\
HD 106191   & 1.36 & 0.90 & 1.16 & 0.40 & 0.72 & 0.05  & 0.05 & 10$^{12}$ & exp  & 0.383(1)  & 0.130(1)   & 0.38 \\
HD 107574   & 1.91 & 0.90 & 2.28 & 0.20 & 2.05 & 0.30  & 0.9  & 10$^8$  & sing & 0.298(2)  & 0.245(5)   & 0.42 \\
HD 116869   & 0.14 & 1.10 & 0.18 & 0.80 & 0.33 & 0.80  & 1.1  & 10$^8$  & sing & 0.55(2)   & 0.0646(22) & 0.55 \\
HD 123396   & 0.46 & 1.10 & 0.84 & 0.80 & 1.24 & 0.80  & 1.1  & 10$^8$  & sing & 0.54(2)   & 0.0315(22) & 0.54 \\
HD 123585   & 2.17 & 1.00 & 0.98 & 0.40 & 2.14 & 0.50  & 0.4  & 10$^8$  & exp  & 0.46(1)   & 0.275(15)  & 0.46 \\
HD 147609   & 2.33 & 0.10 & 1.90 & 0.20 & 2.42 & 0.30  & 0.2  & 10$^8$  & exp  & 0.288(7)  & 1.07(11)   & 0.41 \\
HD 150862   & 0.66 & 0.90 & 1.57 & 0.20 & 1.11 & 0.30  & 0.9  & 10$^8$  & sing & 0.271(3)  & 0.489(26)  & 0.47 \\
HD 188985   & 1.83 & 0.90 & 1.77 & 0.40 & 1.94 & 0.40  & 0.4  & 10$^8$  & exp  & 0.401(4)  & 0.225(5)   & 0.39 \\
HD 210709   & 0.11 & 1.10 & 0.19 & 0.80 & 0.26 & 0.80  & 1.1  & 10$^8$  & sing & 0.314(3)  & 0.303(9)   & 0.38 \\
HD 210910   & 0.55 & 0.10 & 0.63 & 0.20 & 0.38 & 0.30  & 0.3  & 10$^{12}$ & exp  & 0.44(4)   & 0.075(13)  & 0.52 \\
HD 222349   & 3.02 & 0.90 & 1.28 & 0.40 & 2.00 & 0.05  & 0.4  & 10$^8$  & exp  & 0.379(8)  & 0.170(12)  & 0.46 \\
BD+18 5215  & 2.41 & 0.90 & 2.74 & 0.40 & 1.50 & 0.05  & 0.05 & 10$^{12}$ & exp  & 0.274(1)  & 0.503(2)   & 0.63 \\
HD 223938   & 0.26 & 1.00 & 0.20 & 0.50 & 0.29 & 0.70  & 0.5  & 10$^8$  & exp  & 0.384(5)  & 0.229(9)   & 0.34 \\
\hline
\end{tabular}
\end{table}