Fig. 2
From: Susceptibility breakpoint for Danofloxacin against swine Escherichia coli
Iterative non-linear regression curve fitting with increasing subsets. X axis = Log2 MIC, Y axis = numbers of isolates. Numbers below each graph are the values for the true number of isolates included in the dataset (True n), the non-linear regression estimate (Estimated n) and the difference between these two values of n (Difference). O = observed numbers; solid line = fitted curve