... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... The aim is to investigate the existence of propagating waves in the solar chromosphere and the transition region via analyzing the statistical distribution of power in different locations, e.g. in bright magnetic (network), bright non-magnetic and dark non-magnetic (interтАУnetwork) regions, separately. ... We detect the presence of longтАУperiod oscillations with periods between 15 and 30 minutes in bright magnetic regions...