You can't determine the height of a building by the number of floor antenna excluded(by the antennas are never included, only the architectural height which sometimes may include a spire which is essentially a continuation of the concrete structure.)Waambie watuletee building kwa no za floors. Tunajua all buildings in kenya contain antenna.
Tunajua standard height per floor is between 3m to 3.8m watuambie hizo height zingine kwenye majengo yao zinatokana na nini!?
Height differs mostly because of the floor clearance(to elaborate this is the distance between floors).