RECOMMENDATION ITU-R P.679-3 - Propagation data required for the design of broadcasting-satellite systems ANNEX 1 1 Introduction 2 Tropospheric effects 2.1 Attenuation in the troposphere 2.2 Depolarization 3 Ionospheric effects 4 Effects of local environment 4.1 Building entry loss 4.2 Vehicle entry loss 4.3 Reflections and shadowing by buildings 5 Statistical distribution of signal level for large areas 6 Statistical distributions and frequency correlation of signals