Table 2.

Average daily frequency of grid disturbances for three distinct selection criteria: f_a from 2 to 5 days after a major flare; f_i for inactive intervals, i.e., 4-d intervals following the first 7-d intervals of no M or X flaring prior to dates with major flaring; f_r for a randomly-selected 4-d interval between 5 and 50 days before or after “major flaring”. The conditional criterion for days with “major flaring” is defined in the first column for each of the three rows. The final two columns show the total number of dates, N_d, and the total number of flares on such dates, N_f. Uncertainties and subsampling criteria are as defined in Table 1.