PDFs
The format of the PDF files is:
delta | pdf
where delta is the density contrast (rho/< rho > - 1).
In python, the files can be read as
import numpy as np
delta, pdf = np.loadtxt('/home/fvillaescusa/Quijote/PDF/matter/latin_hypercube/0/PDF_m_5.0_z=0.txt', unpack=True)