A note on “Impact factor distribution revisited”

Motivated by Huang (2017), we analyze impact factor data in all subject categories for each year from 2010 to 2015. The results are provided by subject categories and by years. The two exponent distribution due to Mansilla et al. (2007) and the normal distribution are shown to give the best fits for the data sets. The best fits are assessed in terms of probability plots, quantile plots and five other criteria.