There is some variation of  b-values in the approximate range of 0.5 to 2 depending on the source environment of the region. A notable example of this is during earthquake swarms when b can become as high as 2.5, thus indicating a very high proportion of small earthquakes to large ones.
B-values fluctuate between 0.5 and 2, influenced by the region's source environment. Notably, during earthquake swarms, b-values can rise to 2.5 or higher, implying a predominance of minor earthquakes over major ones.