\begin{table}%t2
\caption{\label{tab2}Observed continuum, the broad H$\alpha$~and
H$\beta$ fluxes, reduced to the 6 m telescope aperture $2''\times
6''$. }
\begin{tabular}{clccccl}
\hline \hline\noalign{\smallskip}
N& UT-date& JD      &$F$(5100)$\pm \sigma$ &$F$(H$\alpha$)$\pm \sigma$ & $F$(H$\beta$)$\pm \sigma$  \\
 &   & 2~400~000+ & $10^{-15} \ \rm erg \ cm^{-2} \ s^{-1}~\AA^{-1}$   & $10^{-13} \ \rm erg \ cm^{-2} \ s^{-1}$
 &   $10^{-13} \ \rm erg \ cm^{-2} \ s^{-1}$     \\
 1&2&3&4&5&6\\
\hline
  1  &  1995 Apr. 25     &  49~832.424  &   1.37~$\pm$~0.04  &                   &   1.67~$\pm$~0.07  \\
  2  &  1995 May 26     &  49~863.375  &   1.55~$\pm$~0.05  &                   &   2.02~$\pm$~0.08  \\
  3  &  1995 Nov. 17     &  50~039.156  &   2.46~$\pm$~0.07  &                   &   2.18~$\pm$~0.09  \\
  4  &  1995 Nov. 29     &  50~051.143  &   2.47~$\pm$~0.07  &                   &   2.27~$\pm$~0.10  \\
  5  &  1995 Nov. 30     &  50~052.149  &   2.55~$\pm$~0.08  &                   &   1.89~$\pm$~0.08  \\
  6  &  1996 Feb. 14     &  50~127.602  &   2.27~$\pm$~0.07  &                   &   2.73~$\pm$~0.11  \\
  7  &  1996 Mar. 20     &  50~162.580  &   2.49~$\pm$~0.07  &                   &   2.83~$\pm$~0.12  \\
  8  &  1996 Mar. 20     &  50~162.587  &                  &  13.90~$\pm$~1.17   &     \\
  9  &  1996 Mar. 21     &  50~163.553  &   2.52~$\pm$~0.08  &                   &   3.15~$\pm$~0.13  \\
 10  &  1996 Mar. 21     &  50~163.572  &                  &  11.19~$\pm$~0.94   &     \\
 11  &  1996 Jun. 15     &  50~249.542  &   1.74~$\pm$~0.05  &                   &   2.45~$\pm$~0.10  \\
 12  &  1996 Jul. 12     &  50~276.567  &   1.49~$\pm$~0.04  &                   &   2.68~$\pm$~0.11  \\
 13  &  1996 Jul. 12     &  50~276.570  &                  &  12.13~$\pm$~1.02   &     \\
 14  &  1996 Jul. 13     &  50~277.556  &   1.48~$\pm$~0.04  &                   &   2.44~$\pm$~0.10  \\
 15  &  1996 Jul. 17     &  50~281.434  &   1.57~$\pm$~0.05  &                   &   2.38~$\pm$~0.10  \\
 16  &  1996 Aug. 10     &  50~305.489  &   1.72~$\pm$~0.05  &                   &   2.47~$\pm$~0.10  \\
 17  &  1996 Sep. 11     &  50~338.800  &   1.75~$\pm$~0.05  &                   &   1.91~$\pm$~0.08  \\
 18  &  1996 Nov. 03     &  50~390.431  &   1.55~$\pm$~0.05  &                   &   2.02~$\pm$~0.09  \\
 19  &  1996 Nov. 05     &  50~392.621  &   1.50~$\pm$~0.05  &                   &   1.84~$\pm$~0.08  \\
 20  &  1997 Mar. 04     &  50~511.622  &   1.10~$\pm$~0.03  &                   &   1.28~$\pm$~0.05  \\
 21  &  1997 May 30     &  50~599.370  &   1.19~$\pm$~0.04  &                   &   1.42~$\pm$~0.06  \\
 22  &  1997 Jul. 26     &  50~656.499  &   0.97~$\pm$~0.03  &                   &   1.30~$\pm$~0.05  \\
 23  &  1997 Aug. 30     &  50~691.463  &   1.11~$\pm$~0.03  &                   &   1.28~$\pm$~0.05  \\
 24  &  1997 Sep. 10     &  50~701.566  &                  &  7.28~$\pm$~0.61    &     \\
 25  &  1997 Sep. 10     &  50~701.576  &   1.21~$\pm$~0.04  &                   &   1.12~$\pm$~0.05  \\
 26  &  1997 Dec. 26     &  50~808.582  &   1.68~$\pm$~0.05  &                   &   1.53~$\pm$~0.06  \\
 27  &  1997 Dec. 27     &  50~810.184  &   1.56~$\pm$~0.05  &                   &   1.79~$\pm$~0.08  \\
 28  &  1997 Dec. 27     &  50~810.203  &                  &  9.74~$\pm$~0.82    &     \\
 29  &  1997 Dec. 28     &  50~811.194  &   1.49~$\pm$~0.04  &                   &   1.56~$\pm$~0.07  \\
 30  &  1997 Dec. 28     &  50~811.206  &                  &  7.99~$\pm$~0.67    &     \\
 31  &  1997 Dec. 30     &  50~813.195  &   1.58~$\pm$~0.05  &                   &   1.45~$\pm$~0.06  \\
 32  &  1998 Jan. 22     &  50~835.631  &   1.81~$\pm$~0.05  &                   &   1.61~$\pm$~0.07  \\
 33  &  1998 Feb. 23     &  50~867.560  &   1.62~$\pm$~0.05  &                   &   1.87~$\pm$~0.08  \\
 34  &  1998 Feb. 23     &  50~867.573  &                  &  6.06~$\pm$~0.51    &     \\
 35  &  1998 May 06     &  50~940.354  &   1.87~$\pm$~0.06  &                   &   2.29~$\pm$~0.10  \\
 36  &  1998 Jun. 25     &  50~990.302  &   1.78~$\pm$~0.05  &                   &   2.21~$\pm$~0.09  \\
 37  &  1998 Jul. 16     &  51~010.719  &   1.56~$\pm$~0.05  &  8.12~$\pm$~0.68    &   2.35~$\pm$~0.10  \\
 38  &  1998 Jul. 25     &  51~019.723  &   1.43~$\pm$~0.04  &                   &   2.34~$\pm$~0.10  \\
 39  &  1998 Jul. 28     &  51~023.491  &   1.55~$\pm$~0.05  &                   &   2.14~$\pm$~0.09  \\
 40  &  1998 Jul. 30     &  51~025.431  &   1.40~$\pm$~0.04  &                   &   1.95~$\pm$~0.08  \\
 41  &  1998 Aug. 30     &  51~055.551  &   1.45~$\pm$~0.04  &                   &   2.04~$\pm$~0.09  \\
 42  &  1998 Aug. 30     &  51~055.562  &                  &  10.30~$\pm$~0.87   &     \\
 43  &  1998 Sep. 19     &  51~076.004  &   1.65~$\pm$~0.05  &                   &   2.07~$\pm$~0.09  \\
 44  &  1998 Sep. 25     &  51~081.429  &   1.51~$\pm$~0.05  &                   &   2.10~$\pm$~0.09  \\
 45  &  1998 Sep. 26     &  51~082.429  &   1.59~$\pm$~0.05  &                   &   2.14~$\pm$~0.09  \\
 46  &  1998 Sep. 27     &  51~083.429  &   1.55~$\pm$~0.05  &  6.70~$\pm$~0.56    &   2.20~$\pm$~0.09  \\
 47  &  1998 Oct. 25     &  51~112.259  &   1.34~$\pm$~0.04  &                   &   2.11~$\pm$~0.09  \\
 48  &  1998 Dec. 02     &  51~149.625  &   1.45~$\pm$~0.04  &  7.68~$\pm$~0.65    &   2.15~$\pm$~0.09  \\
 49  &  1999 Jul. 13     &  51~372.516  &   1.19~$\pm$~0.04  &                   &   1.37~$\pm$~0.06  \\
 50  &  1999 Aug. 19     &  51~410.309  &   1.34~$\pm$~0.04  &                   &   1.61~$\pm$~0.07  \\
 51  &  1999 Sep. 04     &  51~425.904  &   1.43~$\pm$~0.04  &                   &   1.65~$\pm$~0.07  \\
 52  &  1999 Sep. 05     &  51~427.272  &                  &  7.40~$\pm$~0.62    &     \\
 53  &  1999 Oct. 03     &  51~454.674  &   1.62~$\pm$~0.05  &                   &   1.89~$\pm$~0.08  \\
 54  &  1999 Oct. 04     &  51~455.664  &   1.38~$\pm$~0.04  &                   &   1.80~$\pm$~0.08  \\
 55  &  1999 Oct. 09     &  51~461.531  &   1.55~$\pm$~0.05  &                   &   1.65~$\pm$~0.07  \\
 56  &  2000 Jul. 19     &  51~745.365  &   1.56~$\pm$~0.05  &                   &   1.92~$\pm$~0.08  \\
 57  &  2000 Jul. 22     &  51~748.232  &   1.60~$\pm$~0.05  &                   &   1.56~$\pm$~0.07  \\
 58  &  2000 Jul. 30     &  51~756.293  &   1.54~$\pm$~0.05  &                   &   1.98~$\pm$~0.08  \\
 59  &  2000 Jul. 30     &  51~756.317  &                  &  9.49~$\pm$~0.80    &     \\
 60  &  2000 Oct. 05     &  51~823.142  &   1.41~$\pm$~0.04  &                   &   1.72~$\pm$~0.07  \\
 61  &  2000 Nov. 18     &  51~867.136  &   1.56~$\pm$~0.05  &                   &   1.82~$\pm$~0.08  \\
 62  &  2000 Nov. 19     &  51~868.128  &   1.66~$\pm$~0.05  &                   &   1.93~$\pm$~0.08  \\
 63  &  2001 Jan. 16     &  51~925.631  &   1.53~$\pm$~0.05  &                   &   1.93~$\pm$~0.08  \\
 64  &  2001 Jan. 16     &  51~925.647  &                  &  7.78~$\pm$~0.65    &     \\
 65  &  2001 Jan. 20     &  51~929.623  &   1.47~$\pm$~0.04  &                   &   1.81~$\pm$~0.08  \\
 66  &  2001 Jan. 20     &  51~929.639  &                  &  9.59~$\pm$~0.81    &     \\
 67  &  2001 Mar. 13     &  51~981.950  &   1.40~$\pm$~0.04  &                   &   1.88~$\pm$~0.08  \\
 68  &  2001 May 05     &  52~034.660  &   1.39~$\pm$~0.04  &  7.38~$\pm$~0.62    &   1.56~$\pm$~0.07  \\
 69  &  2001 May 14     &  52~043.900  &   1.35~$\pm$~0.04  &  6.85~$\pm$~0.58    &   1.56~$\pm$~0.07  \\
 70  &  2001 Jun. 14     &  52~074.850  &   1.34~$\pm$~0.04  &                   &   1.59~$\pm$~0.07  \\
 71  &  2001 Jun. 14.5   &  52~075.350  &                  &  6.77~$\pm$~0.57    &     \\
 72  &  2001 Jun. 15     &  52~075.850  &   1.30~$\pm$~0.04  &                   &   1.55~$\pm$~0.07  \\
 73  &  2001 Oct. 10     &  52~192.600  &   1.08~$\pm$~0.03  &  6.25~$\pm$~0.52    &   1.22~$\pm$~0.05  \\
 74  &  2001 Nov. 23     &  52~237.272  &   1.37~$\pm$~0.04  &                   &   1.06~$\pm$~0.04  \\
 75  &  2002 Feb. 21     &  52~327.226  &   1.36~$\pm$~0.04  &                   &   1.09~$\pm$~0.05  \\
 76  &  2002 Feb. 21     &  52~327.200  &                  &  6.63~$\pm$~0.56    &     \\
 77  &  2002 Mar. 05     &  52~339.019  &   1.20~$\pm$~0.04  &  5.60~$\pm$~0.47    &   0.94~$\pm$~0.04 \\
 78  &  2002 Apr. 03     &  52~368.005  &   1.20~$\pm$~0.04  &                   &   1.02~$\pm$~0.04 \\
 79  &  2002 Jun. 03     &  52~428.968  &                  &  6.60~$\pm$~0.55    &     \\
 80  &  2002 Jun. 04     &  52~429.950  &                  &  6.47~$\pm$~0.54    &     \\
 81  &  2002 Jun. 05     &  52~430.938  &   1.42~$\pm$~0.04  &                   &   1.21~$\pm$~0.05  \\
 82  &  2002 Jun. 24     &  52~450.385  &   1.72~$\pm$~0.05  &                   &   1.71~$\pm$~0.07  \\
 83  &  2002 Jun. 24     &  52~450.410  &                  &  5.86~$\pm$~0.49    &     \\
 84  &  2002 Jul. 09     &  52~464.444  &   1.60~$\pm$~0.05  &                   &   1.54~$\pm$~0.06  \\
 85  &  2002 Jul. 13     &  52~469.408  &   1.85~$\pm$~0.06  &                   &   1.72~$\pm$~0.07  \\
 86  &  2002 Jul. 13     &  52~469.433  &                  &  5.93~$\pm$~0.50    &     \\
 87  &  2002 Aug. 08     &  52~495.272  &   1.71~$\pm$~0.05  &                   &   1.42~$\pm$~0.06  \\
 88  &  2002 Aug. 16     &  52~502.795  &   1.61~$\pm$~0.05  &                   &   1.60~$\pm$~0.07  \\
 89  &  2002 Oct. 14     &  52~562.318  &                  &  9.03~$\pm$~0.76    &     \\
 90  &  2002 Oct. 14     &  52~562.342  &   1.55~$\pm$~0.05  &                   &   1.82~$\pm$~0.08  \\
 91  &  2002 Nov. 13     &  52~591.659  &                  &  7.87~$\pm$~0.66    &     \\
 92  &  2002 Nov. 14     &  52~592.659  &                  &  6.32~$\pm$~0.53    &     \\
 93  &  2002 Nov. 15     &  52~593.671  &   1.36~$\pm$~0.04  &                   &   1.60~$\pm$~0.07  \\
 94  &  2002 Dec. 11     &  52~620.389  &   1.71~$\pm$~0.05  &                   &   1.60~$\pm$~0.07  \\
 95  &  2003 May 08     &  52~768.217  &   1.96~$\pm$~0.06  &                   &   1.69~$\pm$~0.07  \\
 96  &  2003 May 10     &  52~770.219  &                  &  6.40~$\pm$~0.54    &     \\
 97  &  2003 May 23     &  52~782.966  &   2.10~$\pm$~0.06  &                   &   1.69~$\pm$~0.07  \\
 98  &  2003 May 24     &  52~783.976  &   2.15~$\pm$~0.06  &                   &   1.76~$\pm$~0.07  \\
 99  &  2003 May 25     &  52~784.973  &                  &  6.68~$\pm$~0.56    &     \\
100  &  2003 May 26     &  52~785.979  &   2.15~$\pm$~0.06  &                   &   1.68~$\pm$~0.07  \\
101  &  2003 Jun. 22     &  52~812.963  &   2.28~$\pm$~0.07  &                   &   1.78~$\pm$~0.07  \\
102  &  2003 Sep. 18     &  52~900.794  &                  &                   &   1.96~$\pm$~0.08  \\
103  &  2003 Sep. 20     &  52~902.803  &                  &  7.78~$\pm$~0.65    &     \\
104  &  2003 Oct. 21     &  52~933.672  &   1.96~$\pm$~0.06  &  7.11~$\pm$~0.60    &   1.77~$\pm$~0.07  \\
105  &  2003 Nov. 19     &  52~962.637  &   2.83~$\pm$~0.08  &                   &   1.99~$\pm$~0.08  \\
106  &  2003 Nov. 20     &  52~963.608  &   2.93~$\pm$~0.09  &                   &   2.15~$\pm$~0.09  \\
107  &  2004 Mar. 01     &  53~066.358  &                  &  9.15~$\pm$~0.77    &     \\
108  &  2004 Mar. 01     &  53~065.507  &   2.48~$\pm$~0.07  &                   &   2.25~$\pm$~0.09  \\
109  &  2004 May 20     &  53~145.982  &   2.01~$\pm$~0.06  &                   &   2.40~$\pm$~0.10  \\
110  &  2004 Jun. 12     &  53~168.955  &   1.95~$\pm$~0.06  &                   &   2.32~$\pm$~0.10  \\
111  &  2004 Jun. 13     &  53~169.966  &                  &  8.71~$\pm$~0.73    &     \\
112  &  2004 Jun. 15     &  53~171.944  &   1.95~$\pm$~0.06  &                   &   2.04~$\pm$~0.09  \\
113  &  2004 Aug. 19     &  53~236.808  &   2.31~$\pm$~0.07  &                   &   2.11~$\pm$~0.09  \\
114  &  2004 Aug. 20     &  53~237.821  &                  &  9.49~$\pm$~0.80    &     \\
115  &  2004 Aug. 21     &  53~238.858  &   2.31~$\pm$~0.07  &                   &   2.16~$\pm$~0.09  \\
116  &  2004 Sep. 06     &  53~254.771  &   2.13~$\pm$~0.06  &                   &   2.16~$\pm$~0.09  \\
117  &  2004 Dec. 18     &  53~358.140  &   3.13~$\pm$~0.09  &                   &   2.78~$\pm$~0.12  \\
118  &  2004 Dec. 19     &  53~359.130  &   2.92~$\pm$~0.09  &  10.69~$\pm$~0.90   &   2.67~$\pm$~0.11  \\
119  &  2004 Dec. 20     &  53~360.150  &   2.87~$\pm$~0.09  &  11.23~$\pm$~0.94   &   2.76~$\pm$~0.12  \\
120  &  2005 Apr. 15     &  53~475.997  &   3.19~$\pm$~0.1   &                   &   2.71~$\pm$~0.11  \\
121  &  2005 Apr. 16     &  53~476.993  &                  &  9.69~$\pm$~0.81    &     \\
122  &  2005 Apr. 18     &  53~478.992  &   3.28~$\pm$~0.1   &  10.11~$\pm$~0.85   &   2.99~$\pm$~0.13  \\
123  &  2005 May  13     &  53~503.972  &   3.66~$\pm$~0.11  &                   &   2.92~$\pm$~0.12  \\
124  &  2005 Jun. 10     &  53~531.925  &   4.25~$\pm$~0.13  &                   &   2.91~$\pm$~0.12  \\
125  &  2005 Aug. 30     &  53~612.758  &   4.57~$\pm$~0.14  &                   &   3.50~$\pm$~0.15  \\
126  &  2005 Aug. 31     &  53~613.773  &   4.55~$\pm$~0.14  &                   &   3.34~$\pm$~0.14  \\
127  &  2005 Sep. 01     &  53~614.750  &   4.62~$\pm$~0.14  &                   &   3.54~$\pm$~0.15  \\
128  &  2005 Dec. 06     &  53~711.420  &   4.63~$\pm$~0.14  &  19.14~$\pm$~1.61   &   4.09~$\pm$~0.17  \\
129  &  2006 Jun. 04     &  53~891.490  &   3.71~$\pm$~0.11  &                   &   3.70~$\pm$~0.16  \\
130  &  2006 Sep. 01     &  53~979.790  &   3.24~$\pm$~0.1   &                   &   3.49~$\pm$~0.15  \\
131  &  2006 Sep. 16     &  53~994.780  &   3.12~$\pm$~0.09  &                   &   3.15~$\pm$~0.13  \\
132  &  2006 Sep. 17     &  53~995.750  &   3.17~$\pm$~0.1   &                   &   3.40~$\pm$~0.14  \\
133  &  2006 Sep. 18     &  53~996.700  &   3.20~$\pm$~0.1   &                   &   3.40~$\pm$~0.14  \\
134  &  2006 Sep. 19     &  53~997.740  &   3.20~$\pm$~0.1   &                   &   3.44~$\pm$~0.14  \\
135  &  2006 Sep. 20     &  53~998.750  &   3.18~$\pm$~0.1   &                   &   3.27~$\pm$~0.14  \\
136  &  2006 Oct. 28     &  54~036.630  &   2.87~$\pm$~0.09  &  17.41~$\pm$~1.46   &   3.18~$\pm$~0.13  \\
137  &  2006 Oct. 29     &  54~037.640  &   2.82~$\pm$~0.08  &                   &   3.40~$\pm$~0.14  \\
138  &  2006 Nov. 01     &  54~040.650  &   2.84~$\pm$~0.09  &                   &   3.30~$\pm$~0.14  \\
139  &  2006 Dec. 18     &  54~088.210  &   2.99~$\pm$~0.09  &                   &   3.31~$\pm$~0.14  \\
140  &  2007 Jan. 12     &  54~112.640  &   3.46~$\pm$~0.1   &  12.16~$\pm$~1.02   &   3.18~$\pm$~0.13  \\
141  &  2007 Jan. 13     &  54~113.650  &   3.32~$\pm$~0.1   &  14.72~$\pm$~1.24   &   3.14~$\pm$~0.13  \\
142  &  2007 Feb. 12     &  54~143.610  &   3.92~$\pm$~0.12  &  15.86~$\pm$~1.33   &   3.35~$\pm$~0.14  \\
143  &  2007 May  22     &  54~242.890  &   4.89~$\pm$~0.15  &                   &   3.72~$\pm$~0.16  \\
144  &  2007 May  23     &  54~243.880  &   5.07~$\pm$~0.15  &                   &   3.97~$\pm$~0.17  \\
145  &  2007 Jun. 20     &  54~271.870  &   4.85~$\pm$~0.15  &                   &   3.83~$\pm$~0.16  \\
146  &  2007 Jun. 21     &  54~272.960  &   4.72~$\pm$~0.14  &                   &   4.20~$\pm$~0.18  \\
147  &  2007 Aug. 09     &  54~321.820  &   3.73~$\pm$~0.11  &                   &   3.96~$\pm$~0.17  \\
148  &  2007 Aug. 10     &  54~322.810  &                  &  12.46~$\pm$~1.05   &     \\
149  &  2007 Aug. 11     &  54~323.800  &   3.78~$\pm$~0.11  &                   &   4.06~$\pm$~0.17 \\
150  &  2007 Aug. 12     &  54~324.810  &   3.81~$\pm$~0.11  &                   &   3.94~$\pm$~0.17 \\
151  &  2007 Sep. 03     &  54~346.730  &   4.11~$\pm$~0.12  &  15.30~$\pm$~1.28   &   4.28~$\pm$~0.18 \\
152  &  2007 Sep. 04     &  54~347.720  &   4.09~$\pm$~0.12  &                   &   4.30~$\pm$~0.18 \\
153  &  2007 Sep. 05     &  54~348.720  &   4.10~$\pm$~0.12  &                   &   4.08~$\pm$~0.17 \\
154  &  2007 Oct. 16     &  54~389.690  &   3.91~$\pm$~0.12  &  13.96~$\pm$~1.17   &   4.34~$\pm$~0.18 \\
155  &  2007 Oct. 18     &  54~391.630  &   4.05~$\pm$~0.12  &                   &   4.42~$\pm$~0.19 \\
156  &  2007 Nov. 02     &  54~406.650  &   3.80~$\pm$~0.11  &                   &   4.10~$\pm$~0.17 \\
157  &  2007 Nov. 04     &  54~408.610  &   3.78~$\pm$~0.11  &  12.81~$\pm$~1.08   &   4.28~$\pm$~0.18 \\
158  &  2007 Nov. 08     &  54~412.690  &   3.67~$\pm$~0.11  &                   &   4.12~$\pm$~0.17 \\
\end{tabular}
\tablefoot{Column~(1): number. Column~(2): UT-date. Column~(3): Julian
date. Column~(4): $F$(cont), the continuum flux at 5100~\AA~(for $Z=0$)
(in units of $10^{-15}$~ erg~s$^{-1}$~cm$^{-2}$~\AA$^{-1}$), and
$\varepsilon_{\rm cont}$, the estimated  continuum flux error.
Column~(5): $F$(H$\alpha$), the H$\alpha$~total flux (in units of
$10^{-13}$~erg~s$^{-1}$~cm$^{-2}$) in regions (6740$-$7160)~\AA, and
$\varepsilon_{{\rm H}\alpha}$, the H$\alpha$~flux error. Column~(6):
$F$(H$\beta$), the H$\beta$ total flux (in units of
10$^{-13}$~erg~s$^{-1}$~cm$^{-2}$) in regions (4909$-$5353)~\AA, and
$\varepsilon_{\rm H\beta}$, the H$\beta$ flux error.}
 \end{table}