All Tables

Table 1: 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).