versus , where Ṅ_ℓ is the number of large glitches per unit time. The horizontal line corresponds to the logarithm of the mean value , calculated over the bins with . The shaded region indicates the expected dispersion around this average value, based on a Poisson distribution of the number of large glitches and the available observing time spans. The black squares represent the observed values of the ratio for bins (groups) of pulsars. The crosses denote bins with no large glitches detected.