\begin{table}%T1
%\centering
\par
\caption{Journal of observations. 
           Phases are calculated according to the ephemeris of 
           \citet{Stahl96}, ${\rm JD} = 2~448~833.0 + 15.422~{\rm E}$. 
           The peak S/N per pixel in the continuum is quoted in the final column.}
\label{t1}
\begin{tabular}{cl@{\ }l@{\ }lcccl}
\hline\hline
No. & \multicolumn{3}{c}{Date} & HJD          & Phase & $t_{\rm exp}$ & S/N         \\ 
    &    &    &                & ($-$2450000) &       & [minutes]     & pixel$^{-1}$\\
\noalign{\smallskip}
\hline
\noalign{\smallskip}
01 & 1997 &Feb.& 20 & 0500.3453  & 0.1147& 40  & 280\\
02 & 1997 &Feb.& 22 & 0502.3429  & 0.2442& 40  & 450\\
03 & 1997 &Feb.& 23 & 0503.3230  & 0.3078& 40  & 140\\
04 & 1997 &Feb.& 25 & 0505.3160  & 0.4370& 40  & 300\\
\noalign{\smallskip}                                                              
\hline                                                                            
\noalign{\smallskip}                                                              
05 & 1998 &Feb.& 15 & 0860.4021  & 0.4616& 40  & 250\\
06 & 1998 &Feb.& 26 & 0871.3354  & 0.1706& 40  & 270\\
\noalign{\smallskip}                                                              
\hline                                                                            
\noalign{\smallskip}                                                              
07 & 2000 &Feb.& 03 & 1578.4219  & 0.0198& 40  &250\\
08 & 2000 &Feb.& 03 & 1578.4536  & 0.0218& 40  &240\\
09 & 2000 &Feb.& 04 & 1579.3932  & 0.0828& 40  &250\\
10 & 2000 &Feb.& 04 & 1579.4235  & 0.0847& 40  &270\\
11 & 2000 &Feb.& 04 & 1579.4539  & 0.0867& 40  &320\\
12 & 2000 &Feb.& 12 & 1587.3739  & 0.6003& 40  &340\\
13 & 2000 &Feb.& 15 & 1590.3822  & 0.7953& 40  &310\\
14 & 2000 &Feb.& 15 & 1590.4131  & 0.7973& 40  &260\\
15 & 2000 &Feb.& 21 & 1596.3907  & 0.1849& 40  &270\\
16 & 2000 &Feb.& 21 & 1596.4211  & 0.1869& 40  &370\\
17 & 2000 &Feb.& 21 & 1596.4518  & 0.1889& 40  &350\\
18 & 2000 &Feb.& 22 & 1597.3515  & 0.2472& 40  &410\\
19 & 2000 &Feb.& 22 & 1597.3823  & 0.2492& 40  &400\\
20 & 2000 &Feb.& 22 & 1597.4133  & 0.2512& 40  &410\\
21 & 2000 &Feb.& 22 & 1597.4439  & 0.2532& 40  &380\\
22 & 2000 &Feb.& 24 & 1599.3534  & 0.3770& 40  &410\\
23 & 2000 &Feb.& 24 & 1599.3840  & 0.3790& 40  &400\\
24 & 2000 &Feb.& 24 & 1599.4156  & 0.3811& 40  &340\\
25 & 2000 &Feb.& 25 & 1600.3465  & 0.4414& 40  &410\\
26 & 2000 &Feb.& 25 & 1600.3780  & 0.4435& 40  &410\\
27 & 2000 &Feb.& 25 & 1600.4105  & 0.4456& 40  &390\\
28 & 2000 &Feb.& 26 & 1601.3610  & 0.5072& 40  &340\\
29 & 2000 &Feb.& 26 & 1601.3922  & 0.5092& 40  &340\\
30 & 2000 &Feb.& 26 & 1601.4229  & 0.5112& 40  &310\\
31 & 2000 &Feb.& 27 & 1602.3490  & 0.5713& 40  &360\\
32 & 2000 &Feb.& 27 & 1602.3881  & 0.5738& 40  &350\\
33 & 2000 &Feb.& 27 & 1602.4191  & 0.5758& 40  &310\\
34 & 2000 &Feb.& 28 & 1603.3767  & 0.6379& 40  &240\\
35 & 2000 &Feb.& 28 & 1603.4077  & 0.6399& 40  &300\\
36 & 2000 &Feb.& 28 & 1603.4391  & 0.6420& 40  &230\\
37 & 2000 &Mar.& 02 & 1606.3531  & 0.8309& 40  &340\\
38 & 2000 &Mar.& 02 & 1606.3844  & 0.8329& 40  &390\\
39 & 2000 &Mar.& 02 & 1606.4161  & 0.8350& 40  &340\\
40 & 2000 &Mar.& 04 & 1608.3696  & 0.9617& 40  &470\\
41 & 2000 &Mar.& 04 & 1608.4005  & 0.9637& 40  &410\\
42 & 2000 &Mar.& 04 & 1608.4311  & 0.9657& 40  &360\\
43 & 2000 &Mar.& 05 & 1609.3605  & 0.0259& 40  &350\\
44 & 2000 &Mar.& 05 & 1609.3910  & 0.0279& 40  &310\\
45 & 2000 &Mar.& 05 & 1609.4216  & 0.0299& 40  &260\\
\hline\noalign{\smallskip}
\end{tabular}
\end{table}