\begin{table}%t %\centering \par \caption{\label{blr}BLR gas velocities and central black hole masses for 6 Seyfert~1 AGNs listed in this paper.} \small \begin{tabular}{lcc} \hline \hline \multicolumn{1}{c}{Object} & $v_{\rm BLR}$ & $M_{\rm BH}$ \\ \multicolumn{1}{c}{}& (km~s$^{-1}$)&(10$^7$ $M_\odot$)\\ \hline Swift J0059.4+3150 & 3500 & 4.5 \\ Swift J0342.0$-$2115 &4150 & 8.3 \\ Swift J0743.0$-$2543 & 2510 & 2.6 \\ Swift J0904.3+5538& 2910 & 3.3 \\ Swift J0917.2$-$6221 & 3460 & 7.0 \\ Swift J0923.7+2255 & 1820& 6.4 \\ \hline \end{tabular} \end{table}