Frequencies data of butterflies collected in the Malay peninsula was from Fisher, R. A., Corbet, A. S., & Williams, C. B. (1943).
A two-column matrix. The first column is the frequency j = 1,2,…; and the second column is n_j, the number of butterflies captured exactly j times in the sample.
Fisher, R. A., Corbet, A. S., and Williams, C. B. ,1943, The Relation Between the Number of Species and the Number of Individuals in a Random Sample of an Animal Population, Journal of Animal Ecology, 12, 42-58, Table 3.
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