Measure of agreement, η, between the predicted parts of shower related to C/1975 T2 and six modifications of the corresponding real shower. Each of the predicted parts is characterized with t_ev and β (having the same meaning as in Tables 1 and 2). The modifications were separated from C, S, and E databases (see Tables 3 and 4). Panels a and b: dependencies of η on t_ev and β, respectively, are shown. For the sake of better transparency, the positions of symbols for S (E) catalog are artificially shifted left (right) relatively to their actual values. The symbols of given kind show the value of η evaluating the agreement between the given modification of real shower (C-1, C-2, S-1, S-2, E-1, or E-2; see legend in the plot) and all predicted parts of shower (as listed in Tables 1 and 2).