Data from the PRACE4LOFAR reionization simulation 244Mpc_f2_0_250
for redshift z=7.059. At this stage the volume-averaged ionization
fraction is 0.4073 and the mass-averaged ionization fraction 0.5018.

Volume is 244 h^-1 Mpc across, the data is gridded to 250^3.
The radiative transfer simulation was performed with C2-Ray,
the N-body was performed with CUBEP3M.

xfrac3d_7.059.bin contains the ionization fraction (8 byte reals)
7.059n_all.dat contains the density field, halos subtracted. (4 byte reals)
7.059v_all.dat contains the velocity field (4 byte reals)

See Dixon et al. (2016) for more information about this simulation
which is called LB1 in that paper.