This database is made available under the Open Database License: 
       http://opendatacommons.org/licenses/odbl/1.0/. 
Any rights in individual contents of the database are licensed under the Database Contents License: 
       http://opendatacommons.org/licenses/dbcl/1.0/
For any public use of the database, or works produced from the database please cite the article: 
       M. Vanzini, L. Reining and M. Gatti, ...

The potential tabulated in the four files refers to an HSE06 self energy, that can be found in:
       J. Heyd, G. E. Scuseria, M. Ernzerhof, The Journal of Chemical Physics 124, 219906 (2006)

The first column contains the density values of the homogeneous electron gas considered,
starting from a value of 1.02E-04 Bohr^-3 to 4.93E-01 Bohr^-3, in steps of 4.93391E-04 Bohr^-3.

For each value of the density, in the second column there are the frequency values, where the zero
of the axis is aligned with the Fermi energy of the system. The lower value of frequency is 
-4.60 Ha while the upper value is 9.30 Ha, with steps of 2.78E-02 Ha.

In the third column, the (exchange correlation) spectral potential is tabulated, 
while in the fourth column, the delta correction. Both are in Hartree.