Diurnal variation of B parameters over Havana at low and high solar activity

In support of the international effort of determining the best set of parameters to describe the electron density profile in the ionosphere we have analyzed the diurnal variation of B0 and B1 for Havana (23°N; 278°E; Dip 54.6°N; Modip 44.8°N) for low and high solar activity during winter and summertime.