\begin{table}%t3
\caption{$\alpha$ values ($10^{-17}$ cm$^{3}$ s$^{-1}$) for flat olivine$^{1}$ and amorphous carbon$^{2}$ surfaces.}\label{alpha f}
%\centering
\small
\begin{tabular}{l c c c c c c c c c c c}
\hline \hline
 & & & & & & & & & & & \\[-8pt]
$f/f_{0}$   & 10 K$^1$ & 10 K$^2$ & 11 K$^2$ & 12 K$^2$ & 13 K$^2$ & 14 K$^2$ & 15 K$^2$ & 16 K$^2$ & 17 K$^2$ & 18 K$^2$ & 19 K$^2$ \\ \hline
1  & 0.74    & 0.60    & 6.6     & 9.0     & 9.4     & 9.4     & 9.0     & 6.8     & 2.2  & 0.26 & 0.029    \\ 
2  & 1.3     & 0.31    & 5.6     & 8.8     & 9.3     & 9.4     & 9.2     & 7.4     & 3.3 & 0.51 & 0.056\\ 
3  & 1.7     & 0.21    & 5.1     & 8.6     & 9.3     & 9.4     & 9.2     & 7.8     & 4.0 & 0.72 & 0.086\\ 
4  & 2.1     & 0.16    & 4.7     & 8.5     & 9.2     & 9.4     & 9.2     & 8.0     & 4.5 & 0.94 & 0.11\\ 
5  & 2.5     & 0.14    & 4.3     & 8.4     & 9.2     & 9.4     & 9.2     & 8.2     & 4.9 & 1.1 & 0.12\\ 
6  & 2.8     & 0.11    & 4.0     & 8.3     & 9.2     & 9.4     & 9.2     & 8.3     & 5.1 & 1.3 & 0.16 \\ 
7  & 3.0     & 0.095   & 3.8     & 8.2     & 9.2     & 9.4     & 9.2     & 8.4     & 5.4 & 1.4 & 0.19\\ 
8  & 3.3     & 0.086   & 3.5     & 8.0     & 9.2     & 9.4     & 9.2     & 8.5     & 5.6 & 1.6 & 0.22\\ 
9  & 3.5     & 0.076   & 3.3     & 8.0     & 9.2     & 9.4     & 9.3     & 8.6     & 5.8 & 1.7 & 0.24\\ 
10 & 3.6     & 0.067   & 3.1     & 7.9     & 9.2     & 9.3     & 9.3     & 8.6     & 5.9 & 1.9 & 0.27\\ 
15 & 4.3     & 0.048   & 2.6     & 7.6     & 9.1     & 9.4     & 9.3     & 8.8     & 6.5 & 2.4 & 0.37\\ 
20 & 4.7     & 0.038   & 2.2     & 7.4     & 9.1     & 9.3     & 9.3     & 8.9     & 6.9 & 2.9 & 0.51\\ 
25 & 5.2     & 0.029   & 1.9     & 7.2     & 9.0     & 9.3     & 9.3     & 9.0     & 7.2 & 3.2 & 0.62\\ 
30 & 5.4     & 0.019   & 1.6     & 7.1     & 8.9     & 9.3     & 9.3     & 9.0     & 7.2 & 3.5 & 0.71\\ \hline
\end{tabular}
\end{table}