\begin{table}%tC.1
\caption{Different values of population indices for meteoroids and meteors.
$r$: meteors population index; $s_{\rm m}$: meteoroids mass distribution index; $s_{\rm mc}$ meteoroid cumulative mass distribution index; $s$: meteoroids size distribution index.}
\label{tab:rs}
%\centering
\par
\begin{tabular}{cccc}
\hline  \hline
$r$       &       $s_{\rm m}$      &    $s_{\rm mc}$   &    $s$ \\
\hline
1.5     &       1.40       &         0.40  &       2.21 \\
2.0     &       1.69       &         0.69  &       3.07 \\
2.5     &       1.91       &         0.91  &       3.74 \\
3.0     &       2.09       &         1.09  &       4.29 \\
\hline
\end{tabular}
\end{table}