\begin{table}%t1 \par \caption{\label{UVOT}Log of the \emph{Swift} UVOT observations.} \small%\centerline { \begin{tabular}{rrccl} \hline\hline $t$ &$\Delta t -$ &$\Delta t +$ & Magnitude & Filter \\ \hline 106.6&4.9&5.1& $18.23_{-0.16}^{\rm +0.18} $ &$white$\\ 126.6&4.9&5.1& $17.97_{-0.13}^{\rm +0.15} $ &$white$\\ 151.6&7.3&7.7& $18.06_{-0.12}^{\rm +0.13} $ &$white$\\ 181.5&7.3&7.6& $17.83_{-0.10}^{\rm +0.11} $ &$white$\\ 4690&49&49& $19.81_{-0.14}^{\rm +0.16} $ &$white$\\ 6122&49&49& $20.14_{-0.24}^{\rm +0.31} $ &$white$\\ 17~560&193&195& $20.90_{-0.23}^{\rm + 0.30} $ &$white$\\ 85.7&7.6&8.4& $17.72\pm0.66$ &$v$\\ 220&9&9& $16.66_{-0.14}^{\rm +0.16} $ &$v$\\ 263&12&13& $16.69_{-0.12}^{\rm +0.14} $ &$v$\\ 318&15&15& $16.37_{-0.09}^{\rm +0.10} $ &$v$\\ 383&17&18& $16.67_{-0.11}^{\rm +0.12} $ &$v$\\ 463&22&23& $16.45_{-0.09}^{\rm +0.10} $ &$v$\\ 551&21&22& $16.60_{-0.10}^{\rm +0.12} $ & $v$\\ 5100&49&49&$18.45_{-0.18}^{\rm +0.22} $ &$v$\\ 10~013&223&228& $19.33_{-0.13}^{\rm +0.14} $ &$v$\\ 34~052&225&226& $>$$20.57$ &$v$\\ 51~412&225&226& $>$$20.58$ & $v$\\ 68~768&225&226& $>$$20.53$ &$v$\\ 116~954&8680&8845& $>$$21.40$ &$v$\\ 184~147&3318&3379& $>$$21.32$ &$v$\\ 4486&49&49& $20.10_{-0.22}^{\rm +0.27} $ &$b$\\ 5918&49&49& $20.20_{-0.30}^{\rm +0.41} $ & $b$\\ 16~711&224&227& $21.06_{-0.24}^{\rm +0.30} $ &$b$\\ 23~377&177&179& $21.27_{-0.40}^{\rm +0.65} $ &$b$\\ 40~696&197&198& $>$$21.02$ &$b$\\ 58~053&395&396& $>$$20.98$ &$b$\\ 4281&49&49& $>$$20.39$ &$u$\\ 5713&49&49& $>$$20.22$ &$u$\\ 15~799&224&227& $>$$21.89$ &$u$\\ 22~560&224&227& $>$$21.57$ &$u$\\ 29~221&148&149& $>$$20.19$ &$u$\\ 43~093&1831&1913& $>$$22.68$ &$u$\\ 60~462&1843&1901& $>$$21.79$ &$u$\\ 4077&49&49& $>$$19.87$ &$uvw1$\\ 5509&49&49& $>$$19.27$ &$uvw1$\\ 11~768&191&194& $>$$19.92$ &$uvw1$\\ 21~645&220&222& $>$$21.54$ &$uvw1$\\ 28~460&220&222& $>$$20.90$ &$uvw1$\\ 42~229&1852&1937& $>$$21.28$ &$uvw1$\\ 59~599&1864&1925& $>$$22.37$ &$uvw1$\\ 73~712&221&221& $>$$21.22$ &$uvw1$\\ 3872&49&49& $>$$21.95$ &$uvm2$\\ 5304&49&49& $>$$21.85$ &$uvm2$\\ 10~916&219&223& $>$$21.58$ &$uvm2$\\ 27~553&220&222& $>$$20.93$ &$uvm2$\\ 34~905&195&196& $>$$21.36$ &$uvm2$\\ 48~416&2051&2142& $>$$22.44$ &$uvm2$\\ 65~785&2063&2130& $>$$21.52$ &$uvm2$\\ 4895&48&49& $>$$20.19$ &$uvw2$\\ 6304&37&37& $>$$20.18$ &$uvw2$\\ 33~138&221&222& $>$$21.59$ &$uvw2$\\ 50~495&220&221& $>$$21.24$ &$uvw2$\\ 67~853&221&222& $>$$22.16 $ &$uvw2$\\ \hline \end{tabular}} \smallskip The first column gives the logarithmic mid-time in seconds after the onset of the GRB. The second and the third columns give the start/end of the observations. The data are not corrected for Galactic extinction. \end{table}