Characterising a Hybrid Zone between a Cryptic Species Pair of Freshwater Snails

README for POPS_geo_dist_circle

This is a file containing pairwise distances between each individual/sample site calculated using the greater circles algorithm in POPS. 
This file was generated from the spatial data in columns 4 and 5 of POPS_input.txt and was used as input for all POPS analyses that assumed
spatial autocorrelation.

Other POPS infiles are POPS_input.txt and POPS_predictionfile.txt.