Mean value of Fst_1   =  0.2285
Mean value of Fst_2   =  0.2142
Mean value of Fst_3   =  0.2103
Mean value of Fst_4   =  0.9356

Values of FST range from 0 to 1.0, where 0 indicates no genetic differences between populations and 1.0 indicates complete reproductive isolation between them.  FST can be calculated by:

FST = 3 [Vp / ( p ( 1 - p))] / n

where Vp is the variance of the frequency of allele p, p is the mean allele frequency across all samples, and n is the number of alleles.

The statistic of genetic structure, FST, may also be used to estimate gene flow, which is typically expressed as the numbers of individuals exchanged between populations per generation. Gene flow may be estimated by:

Nm = 1 / (FST * 4)

where N is the number of individuals in a given population and m is the proportion of those individuals resulting from immigration. 

As a benchmark, values of Nm > 1 (corresponding to FST < 0.25), are typical of high gene flow species, such as zooplankton, which may be expected to become genetically homogeneous in the absence of counter-acting forces. 
CS Results: Structure 2.2