\begin{table}%t4
\caption{Results of the Spearman Rank-Order Correlations between $S'_V$ and  the phase angle $\alpha$, $S'_N$, the Tisserand parameter $T$, the orbital elements of the asteroids ($a, e, i$, and  their nuclear mangnitude $H$. $r_{\rm s}$ is a measurement of the degree of correlation between the two parameters, $P_{r_{\rm s}}$ is a measurement of the reliability of $r_{\rm s}$ (see text).} 
%\setcounter{table}{4}
\label{table5}      
\small%\centering
\par
\begin{tabular}{lcccccccc}   
\hline\hline           
variables&$r_{\rm s}$ (ACO)&$P_{r_{\rm s}}$ (ACO)&$r_{\rm s}$ (Tro)&$P_{r_{\rm s}}$ (Tro)&$r_{\rm s}$ (Cyb)&$P_{r_{\rm s}}$ (Cyb)&$r_{\rm s}$ (all)&$P_{r_{\rm s}}$ (all)\\
\hline          
$S'_V$ vs. $\alpha$	&--	&--	&--	&--&--&--		&--0.01	&0.9656		 \\
$S'_V$ vs. $S'_N$	&0.63	&0.0165	&--	&--&--&--             &0.70	&0.0003		 \\
$S'_V$ vs. $T$ 	 	&--0.52	&0.0019	&--0.06	&0.7918&--0.25&0.1658  &--0.21	&0.0405		 \\
$S'_V$ vs. $a$		&0.36	&0.0392	&0.03	&0.9148&0.15&0.4109   &0.42	&$3\times10^{-5}$\\
$S'_V$ vs. $e$		&0.37	&0.0344	&--0.01	&0.9716&0.04&0.8419   &--0.14	&0.1855		 \\
$S'_V$ vs. $\sin{I}$	&--0.12	&0.5144	&0.13	&0.6064&0.17&0.3325   &0.01	&0.9173		 \\
$S'_V$ vs. H		&0.19	&0.2875	&0.29	&0.2241&0.39&0.0235   &--0.08	&0.4371		 \\
\hline 
\end{tabular}
\end{table}