\begin{table}%t7
\caption{The   X-ray $(F_{\rm x})$   and   optical $(F_{\rm o})$ flux of the afterglow  at 40~ks  and their ratio $ (F_{{\rm o}/{\rm x}})$; $N_{\rm H}$ is the hydrogen column density, $\delta_{\rm o}$ is the temporal index decay of the optical afterglow  and  $\delta_{\rm x}$ is the temporal decay index of the  X-ray afterglow.}\label{tab5}
\small%\centerline
{
\begin{tabular}{lcccccc}
\hline\hline
 %& & & & & & \\[-8pt]
Events  & $N_{\rm H}^{(1)}$ & $F_{\rm o}^{(2)}$   & $\delta_{\rm o}$ & $F_{\rm x}^{(3)}$  & $\delta_{\rm x}$ & $ f_{{\rm o}/{\rm x}}^{(4)}$ \\
 %& & & & & & \\[-8pt]
\hline
 %& & & & & & \\[-8pt]
\object{XRF 981226}  & 1.78&    $<$$1.7$  & & $\rm 4.88^{+0.24}_{-0.44}$$^{(5)}$ & $\rm -(0.66^{+0.68}_{-0.44})$$^{(8)}$  &  $<$$0.34$ \\
\object{XRF 990520}   & 3.6&    $<$$5.7$  &  & & & \\
\object{XRF 990704}   & 3.0&    $<$$1.2$  & & $5.95\pm0.78$$^{(5)}$ & $ \rm -(0.88^{+0.28}_{-0.20})$$^{(8)}$ &  $<$$0.20$ \\
\object{XRR 991106}  & 46&    $<$$34$  & & $2.10\pm0.65$$^{(5)}$ & $ \rm -(1.1^{+2.5}_{-2.1})$$^{(8)}$  &  $<$$16$ \\
\object{XRF 000416}  & 8.0&    $<$$150$  & &  &  &  \\
\object{XRF 000615}  & 2.7&    $<$$2.7$  & & $1.28\pm0.20$$^{(5)}$ & $ \rm (0.23^{+1.32}_{-0.94})$ $^{(8)}$ &  $<$$2.1$ \\
\object{XRF 010213}  & 3.4&    $<$$27$  & &  &  &  \\
\object{XRR 010326B} & 4.3&    $<$$15$  & &  &  &  \\
\object{XRR 010629} & 14&    $<$$36$  & &  &  &  \\
\object{XRR 010921} & 19&    $<$$71$  & &  &  &  \\
         &    &  $210\pm40$ & --1.6$^{(10)}$ & & & \\
\object{XRF 011019}  & 2.6&    $<$$8.3$  & &  &  &  \\
\object{XRR 011030}  & 10&    $<$$11$  & & $30.8\pm0.9$ $^{*}$ &   &  $<$$0.39$ \\
\object{XRF 011130}  & 3.3&   $ 70\pm11$  & $\rm -1.30^{+0.04}_{-0.05}$$^{(11)}$ & $0.99\pm0.92$$^{*}$ &   & $ 71\pm66$ \\
\object{XRR 011211}   & 4.3&   $ 23.6\pm0.87$  & $ -0.96\pm0.06$$^{(12)}$ & $1.0\pm0.1$$^{(5)}$ & $-(1.6\pm0.3)$ $^{(13)}$ & $24\pm3$ \\
\object{XRF 011212}    & 34 &    $<$$8.3$  & &  &  &  \\
\object{XRR 020124}   & 4.1   &  $4.03\pm0.52$ & & & & \\
\object{XRR 020127}    & 5&    $<$$20$  & & $7.1\pm1.9$$^{*}$ &  &  $<$$2.8$ \\
\object{XRF 020317}    & 3.8   &  $85.4\pm7.8$ & & & & \\
\object{XRR 020410}    & 6.4  &  $ 8.8\pm4.1$  & $<$$-0.95$$^{(14)}$ & $\rm 77.8^{+6.3}_{-6.9}$$^{(5)}$ & $-(0.92\pm0.12)$$^{(8)} $  & $ 0.11\pm0.05$ \\
\object{XRF 020427}    & &    & &  $5\pm2.5$$^{(5)}$ & $\rm -(1.3^{+0.10}_{-0.12})$$^{(8)} $  &     \\
\object{XRF 020625}    & 7.9  &   $<$$200$ & & & &  \\
\object{XRR 020812}      & 4  &   $<$$20$ & & & & \\
\object{XRR 020819}       & 5.4  &   $<$$13$ & & & & \\
\object{XRF 020903}     & 2.3&   $ (12\pm2)\times10^{3}$  & & & &  \\
                    & &   $<$$1.9$ & & & & \\
\object{XRR 021004} & 4.3  &  $140\pm7$ & --1.3 $^{(15)}$& $ 14\pm1$$^{**}$ &$-(1.0\pm0.2)$$^{(16)}$  & 10 $\pm$ $1$ \\
\object{XRR 021104}           & 21  &   $<$$2.5$ & & & & \\
\object{XRR 021112}          & 15  &   $<$$3.1$ & & & & \\
\object{XRR 021211}          & 3.7  &  $3.11\pm0.53$ & $-(0.96\pm0.04)$$^{(17)}$ & & & \\
\object{XRR 030115}             & 1.9  &   $<$$13$ & & & & \\
\object{XRR 030323}             & 4.8  &  $75.9\pm0.63$ & & & & \\
\object{XRR 030324}            & 1.9 &   $<$$7$ & & & & \\
\object{XRR 030329}    & 2.2&   $ 3800\pm100$  &$-0.97\pm0.03$$^{(18)}$ & $500\pm50$$^{**}$ & --($0.9)$$^{(19)}$   & $ 7.64\pm0.81$ \\
\object{XRF  030416}           & 4.6  &   $<$$4.1\times10^{3}$ & & & & \\
\object{XRR 030418}         & 3.3  &  $4.8\pm3.4$ & & & & \\
\object{XRF 030429}         & 5.1  &  $23.6\pm3.3$ & & & & \\
\object{XRF 030528}   & 15&    $<$$0.4$  & & $5.3\pm2.4$$^{*}$ &  &  $<$$0.07$ \\
\object{XRF 030723}    & 1.5&   $ 4.9\pm1.8$  &$-0.10\pm0.06$$^{(20)}$ & $ 5.9\pm1.3$$^{*}$  &  & $ 0.83\pm0.35$ \\
\object{XRR 030725}          & 3.3  &  $75\pm15$ &--0.9$^{(21)}$ & & & \\
\object{XRF 030823}             & 8.2  &   $<$$7.5$ & & & & \\
\object{XRF 030824}            & 4.1  &   $<$$14$ & & & & \\
\object{XRR 031220}   & 11&    $<$$8.7$  & & $2.2\pm0.8$$^{*}$ &  &  $<$$4.5$ \\
\hline
\end{tabular}}
\medskip
 (1) In units of $1\times10^{20}~{\rm cm}^{-2}$, (2)  in units of  $\mu$J, (3) in units of  $10^{-13}~{\rm erg~cm}^{-2}~{\rm s}^{-1}$,  (4)~optical flux in units of~$\mu$J and X-ray  flux in units  of $10^{-13}~{\rm erg~cm}^{-2}~{\rm s}^{-1}$, (5)~\citet{depasq5}, (6)~\citet{fro00}, (7)~\citet{fero01}, (8)~\citet{depasq5}, (9)~\citet{Miao04}, (10)~\citet{priceb}, (11)~\citet{gar}, (12)~\citet{ses}, (13)~\citet{piro04}, (14)~\citet{nic04}, (15)~\citet{weid02},  (16)~\citet{rsak1}, (17)~\citet{cor1}, (18)~\citet{price3}, (19)~\citet{tiego},  (20)~\citet{fynbo}, (21)~\citet{vin}, *~flux extrapolated using the decay index between the  prompt data and the first ToO~observations, **~flux extrapolated using the early afterglow decay index from the  observation nearest to~$40$~Ks.
\end{table}