\begin{table}%t1
%\centering
\par
\caption{List of participating observatories by longitude: $d$ is the telescope diameter;
$N_{\rm obs}$ is the total number of observations done, i.e.\ the number of
unbinned data; $N_U$, $N_B$, $N_V$, $N_R$, and $N_I$ are the
numbers of data points in ${\it UBVRI}$ remained after discarding and binning some of
the original data; the numbers in brackets refer to the WEBT campaign 2001 alone
(May~2001--February~2002).
}\label{t1}
\begin{tabular}{lccccccc}
\hline\hline
Observatory & $d$ (cm)& $N_{\rm obs}$ & $N_U$ & $N_B$
& $N_V$ & $N_R$ & $N_I$ \\
\hline
Kyoto, Japan & 25 & 190 (0) & 0 & 0 & 0 & 19 (0) & 0 \\
Yunnan, China &100 & 25 (25) & 0 &2 (2)&2 (2) &7 (7) & 0 \\
Mt. Maidanak (T-60), Uzbekistan &60&50 (50) &15 (15) &16 (16) &16 (16) &0 &0 \\
Mt. Maidanak (AZT-14), Uzbekistan &50 &150 (150) &49 (49) &47 (47) &49 (49) &3
(3) &0\\
Mt. Maidanak (AZT-22), Uzbekistan &150 &418 (418) &50 (50) &87 (87) &65 (65)
&108 (108) &61 (61)\\
Abastumani, Georgia (FSU) &70 &1823 (316) &0 &276 (36) &232 (0) &903 (213) &150
(0)\\
Crimean, Ukraine &70 &267 (267) &0 &67 (67) &67 (67) &67 (67) &66 (66) \\
Skinakas, Crete &130 &510 (239) &0 &186 (119) &69 (0) &184 (118) &67 (0)\\
Tuorla, Finland &103 &80 (0) &0 &0 &79 (0) &0 &0\\
MonteBoo, Czech Republic &62 &754 (754) &0 &0 &0 &282 (282) &0\\
Vallinfreda, Italy &50 &98 (0) &0 &0 &49 (0) &0 &0\\
Perugia, Italy &40 &524 (419) &0 &0 &112 (112) &208 (180) &166 (125)\\
Greve, Italy &32 &55 (0) &0 &0 &0 &0 &55 (0)\\
Torino, Italy &105 &487 (54) &0 &104 (1) &70 (2) &271 (24) &12 (2)\\
Sabadell, Spain &50 &32 (32) &0 &0 &3 (3) &12 (12) &0\\
Guadarrama, Spain &20 &3 (3) &0 &0 &1 (1) &1 (1) &0\\
Roque (KVA), La Palma &60 &322 (0) &0 &0 &0 &152 (0) &0\\
Roque (KVA), La Palma &35 &42 (42) &0 &0 &10 (10) &10 (10) &0\\
Roque (JKT), La Palma &100 &64 (64) &0 &9 (9) &10 (10) &32 (32) &6 (6)\\
Roque (NOT), La Palma &256 &44 (44) &4 (4) &7 (7) &7 (7) &7 (7) &3 (3)\\
Roque (TNG), La Palma &358 &138 (0) &3 (0) &62 (0) &5 (0) &62 (0) &2 (0)\\
Olin, Connecticut &51 &400 (361) &0 &0 &8 (0) &78 (64) &85 (71)\\
Hopkins, Massachusetts &60 &12 (0) &0 &0 &0 &0 &11 (0)\\
Foggy Bottom, New York &40 &248 (83) &0 &0 &0 &248 (83) &0\\
Boltwood, Canada &40 &96 (96) &0 &6 (6) &6 (6) &6 (6) &5 (5)\\
Bell, Kentucky &60 &23 (23) &0 &0 &0 &22 (22) &0\\
St. Louis, Missouri &36 &423 (340) &0 &10 (4) &40 (16) &161 (137) &39 (15)\\
Sommers-Bausch, Colorado &60 &9 (9) &0 &0 &4 (4) &4 (4) &0\\
Lowell, Arizona &180 &36 (0) &0 &0 &18 (0) &0 &18 (0)\\
San Pedro Martir, Mexico &210 &9 (9) &0 &3 (3) &3 (3) &3 (3) &0\\
San Pedro Martir, Mexico &150 &123 (123) &4 (4) &12 (12) &11 (11) &11 (11) &4
(4)\\
\hline
Total & &   7455 (3921) &125 (122) &894 (416) &936 (384) &2861 (1394) &750 
(358)\\
\hline
\end{tabular}
\end{table}