Visit https://simonhalvdansson.github.io/2D-Coulomb-Gas-Tools/ to try the simulator in index.hmtl.
Each zip file contains a .pckl file, see e.g. https://docs.python.org/3/library/pickle.html for more on this file format. In short it stores a Python object as a file. For useage see the runner.py file. The short version is that setting ps = load('ps600') makes ps a 600 times 600 matrix with coefficients so that e.g. the 40th coefficient for p_300 is ps[300][40].
Generally, n=600 takes a lot of time to compute so it's best to try things with ps100 first.