\begin{table}%t1
\caption{Optical properties of GRBs in our sample. References are given for~$\beta_{\rm o}$, $A_{R}^{\rm Gal}$, $A_{V}^{\rm host}$ and~$A_{R(1+z)}^{\rm host}$.}\label{tabottico}
\small%\centerline
{
\begin{tabular}{l l c c c c c c c}
\hline\hline
\noalign{\smallskip}
GRB  & $z$& ref $z$  & $\beta$ & $A_R^{\rm Gal}$ & $A_V^{\rm host}$ &
$A_{R(1+z)}^{\rm host}$ 
& $\log L^{\rm 12h}_{\nu_R}$ & Ref. \\
\hline
\object{970508} & 0.835 &me97 &  1 & 0.13  & 0 & 0 & 30.42  & ga98 \\ 
\object{971214} & 3.418 &ku98& 1.03 $\pm$ 0.18 & 0.04   & 0.38 $\pm$ 0.08 & 0.99 & 30.39 & wi99\\
\object{980613} & 1.0964 &dj99& 0.59 $\pm$ 0.03 & 0.23   &  & 0.45 &29.31 & hj02  \\
\object{980703} & 0.966  &dj98& 1.01 $\pm$ 0.01  & 0.15  & 1.51 $\pm$ 0.11 & 2.50  & 30.82& vr99 \\  
                &     &   & 0.78          & 0.15  & 0.90 $\pm$ 0.20 & 1.48 & 30.34 & bl98 \\
\object{990123} & 1.6 &ke99& 0.750 $\pm$ 0.068 & 0.04 & 0 & 0 & 30.62 & ho00 \\
\object{990510} & 1.619 &vr99b& 0.49 $\pm$ 0.1 & 0.54 & 0  & 0    & 30.73 &ho00 \\
                &   &    & 0.55 $\pm$ 0.1  & 0.48 &    &      & 30.75 & be99\\  
\object{991216} & 1.02 &vr99c& 0.58 $\pm$ 0.08 & 1.67 & 0 & 0 & 30.89 & ga00 \\
\object{000301c} & 2.0670 &fe00& 0.70 $\pm$ 0.09 & 0.13 & 0.09 $\pm$ 0.04 & 0.26 & 30.99 & je01\\ 
\object{000418} & 1.1181  &bl00& 0.81& 0.08 & 0.96 $\pm$ 0.20 & 1.69 & 30.71 & kl00 \\
\object{000911} & 1.06 &pr02 & 1.3 & 0.30 & 0.39 & 0.69 & 30.66  & ma05 \\
\object{000926} & 2.0375 &fy00& 1.0 $\pm$ 0.2 &  0.06 & 0.18 $\pm$ 0.06 & 0.53 &31.06 & fy01  \\
\object{010222} & 1.477 &jh01b& 1.07 $\pm$ 0.09 & 0.06 & 0    & 0    & 30.52  & st01 \\
                &       & &0.89 $\pm$ 0.03  &      & 0    & 0    & 30.45  & jh01\\
                &       & &0.5           &      & 0.19 & 0.42 & 30.46  & le01\\
\object{010921} & 0.45 &dj01& p=3.03 & 0.396 & 1.16 $\pm$ 0.07 & 1.43 & 30.77 & pr02a\\
\object{011121} & 0.36 & in01&0.62 $\pm$ 0.05 &1.32  & 0 & 0 & 29.65 & gr03 \\
                &      && 0.76 $\pm$ 0.15 &0.97  & 0 & 0 & 29.58 & pr02b  \\
                &      && 0.66 $\pm$ 0.13 &1.12  & 0 & 0 & 29.53 & ga03 \\
\object{011211} & 2.14 &gl01& 0.56 $\pm$ 0.19 & 0.11 & 0.08 $\pm$ 0.08 & 0.23 & 30.36 & ja03\\
                &      & &0.61 $\pm$ 0.15 &      & 0.06          & 0.177& 30.29 & ho02\\
\object{020124} & 3.198 &at05& 1.32 $\pm$ 0.25 & 0.14 & 0            & 0    & 30.22 & hj03 \\
                &       && 0.31 $\pm$ 0.43 &      & 2.66 $\pm$ 0.16 & 0.73 & 29.81 & hj03\\
                &       && 0.91 $\pm$ 0.14 &      & 0            & 0     & 30.00 &hj03\\ 
\object{020405} & 0.69 &ma02& 1.45 & 0.15 & 0 & 0 & 30.44 & be03 \\
\object{020813} & 1.25 &fi02& 0.85 $\pm$ 0.07 & 0.30 & 0.12 $\pm$ 004 & 0.226 & 30.57 & co03 \\
\object{021004} & 2.3351 &gi02& 0.60 $\pm$ 0.02 & 0.16 & 0.15 & 0.39 & 31.17 & pa03  \\  
\object{021211} & 1.004 &vr03& 0.55 $\pm$ 0.10 & 0.07  &    &0.48 & 29.41  & fo03 \\
                &       & &0.69 $\pm$ 0.14  &       & 0  & 0   & 29.27  & ho04\\ 
\object{030226} & 1.986 &gr03b& 0.55          & 0.05 & 0.52 & 0.98 & 30.59  &pa04\\ 
                &        & &0.70 $\pm$ 0.03 &      & 0    & 0    & 30.27  & kl04 \\
\object{030323} & 3.3718 &vr03b& 0.89 $\pm$ 0.04 & 0.13 & 0 & 0 & 30.92 & vr04 \\
\object{030329} & 0.1685 &ca03& 0.5        & 0.07 & 0.30 $\pm$ 0.03 & 0.29 & 30.45 & bl04\\
                &        && 0.8 $\pm$ 0.2 &       & 0.12         & 0.12 & 30.40 & ma03\\
\object{030429} & 2.66   & we03 & 0.36 $\pm$ 0.12 & 0.165 & 0.34 $\pm$ 0.04 & 0.99 & 30.78 & ja04\\
\hline \\
\end{tabular}}
\medskip
References: me97: Metzger et~al. (\cite{Metzg97}); ga98: Garcia et~al. (\cite{Garci98}); ku98: Kulkarni et~al. (\cite{Kulka98}); wi99: Wijers et~al. (1999); dj99: Djorgovski et~al. (\cite{Djorgo99}); hj02: Hjorth et~al. (\cite{Hjort02}); dj98: Djorgovski et~al. (\cite{Djorgo98}); bl98: Bloom et~al. (\cite{Bloo98}); ke99: Kelson et~al. (\cite{Kels99}); vr99: Vreeswijck et~al. (\cite{Vree99}); ho00: Holland et~al. (\cite{Holla00}); vr99b: Vreeswijck et~al. (\cite{Vrees99}) (GCN324);
be99: Beuermann et~al. (\cite{Beuer99}); vr99c: Vreeswijck et~al. (\cite{Vreesw99}) (GCN496);
ga00: Garnavich et~al. (\cite{Garnav00}); bl00: Bloom et~al. (\cite{Bloo00});
fe00: Feng et~al. (\cite{Feng00});
je01: Jensen  et~al. (\cite{Jens01}); 
kl00: Klose  et~al. (\cite{Klo00}); pr02: Price et~al. (\cite{Pr02});  ma05:
Masetti et~al. (\cite{Maset05}); fy00: Fynbo  et~al. (2000); fy01: Fynbo  et~al.
(\cite{Fyn01}); jh01b: Jha et~al. (\cite{Jha2001}) (GCN974); st01: Stanek et~al. 
(\cite{Sta01}); jh01: Jha et~al. (\cite{Jha01}); le01: Lee et~al.
(\cite{Lee01}); pr02a: Price et~al. (\cite{Pr02}); dj01: Djorgovski et~al. (\cite{Djorgo01});
gr03: Greiner et~al. (\cite{Greine03});
pr02b: Price  et~al. (\cite{Pr02}); in01: Infante et~al. (\cite{Infan01});
 ga03: Garnavich  et~al. (\cite{Garnav03}); gl01: Gladders et~al. (\cite{Gladd01});
ja03: Jakobsson et~al. (\cite{Jakob03}); ho02: Holland  et~al. (\cite{Holla02}); at05:
Atteia et~al. (\cite{Atte05});
hj03: Hjorth et~al. (\cite{Hjort03}); ma02: Masetti et~al. (\cite{Maset02});  
be03: Bersier et~al. (\cite{Bers03}); co03: fi02: Iore et~al. (2002);
Covino et~al. (\cite{Covi03}); gi02: Giannini et~al. (\cite{Gianni02});
pa03: Pandey  et~al. (\cite{Pand03}); vr03: Vreeswijck et~al. (\cite{Vree03}) (GCN1785);
fo03: Fox et~al.
(\cite{Fox03}); ho04: Holland et~al. (\cite{Holla04}); vr03b:  Vreeswijck et~al. (\cite{Vrees03}) (GCN1953)
gr03b: Greiner et~al. (\cite{Grein03}) (GCN1886);
vr04: Vreeswijk et~al. (2004); ca03: Caldwell et~al. (\cite{Caldw03});
pa04: Pandey et~al. (\cite{Pand04}); kl04: Klose et~al. (\cite{Klo04}); bl04: Bloom et~al.
(\cite{Bloo04}); ma03: Matheson et~al. (\cite{Mathe03}); we03: Weidinger et~al. (\cite{Weidi03});
ja04: Jakobsson et~al. (\cite{Jakob04}). 
\end{table}