\begin{table}%t8
%\centering
\par
\caption{\label{table8}{Mass of a meteoroid as a function of time
           and duration,~$T$. Meteoroid mass is in~$10^{-6}$~kg.}}
\begin{tabular}{rrrr}  \hline \hline \\ 
\multicolumn{1}{r}{time [UT]}                        &
\multicolumn{1}{r}{$m_{\infty}(T \! = \! 0.4$ s)}    &
\multicolumn{1}{r}{$m_{\infty}(T \! = \! 1.0$ s)}    &
\multicolumn{1}{r}{$m_{\infty}(T \! = \! 10.0$ s)}   \\  \hline
 \\ 
23h15m  &  14.9  &  40.2   &   491   \\
23h45m  &  11.8  &  31.8   &   389   \\
 0h15m  &   9.0  &  24.3   &   297   \\
 0h45m  &   7.8  &  21.1   &   257   \\
 1h15m  &   6.7  &  18.1   &   222   \\
 1h45m  &   5.9  &  16.0   &   196   \\
 2h15m  &   5.4  &  14.7   &   180   \\
 2h45m  &   5.0  &  13.5   &   164   \\
 3h15m  &   4.7  &  12.7   &   155   \\
 3h45m  &   4.4  &  12.0   &   147   \\
 4h15m  &   4.3  &  11.7   &   143   \\
 4h45m  &   4.2  &  11.5   &   140   \\
 5h15m  &   4.2  &  11.4   &   139   \\
 5h45m  &   4.2  &  11.4   &   139   \\
 6h15m  &   4.3  &  11.6   &   142   \\
 6h45m  &   4.4  &  12.0   &   147   \\
 7h15m  &   4.6  &  12.5   &   152   \\
 7h45m  &   4.9  &  13.2   &   162   \\
 8h15m  &   5.2  &  14.2   &   173   \\
 8h45m  &   5.8  &  15.7   &   191   \\
 9h15m  &   6.5  &  17.7   &   216   \\
 9h45m  &   7.5  &  20.4   &   249   \\
10h15m  &   9.0  &  24.3   &   297   \\
10h45m  &  10.6  &  28.8   &   352   \\
11h15m  &  13.9  &  37.7   &   461   \\
11h45m  &  18.5  &  50.2   &   613   \\
\hline
\end{tabular}
\end{table}