Fig. 14From: Statistical study on the regional characteristics of seismic activity in and around Japan: frequency-magnitude distribution and tidal correlationRelationship between \(b\) and \(\mathrm{min}{T}_{N/4}\) in a region with a typical \(b\)-value PDD. Squares represent the median values in the range of 0.5 to 2 times the horizontal axis values, and the vertical bars represent the 90th and 10th percentiles. a Area A; b area BBack to article page