RECOMMENDATION ITU-R P.1057-1 - Probability distributions relevant to radiowave propagation modelling ANNEX 1 - Probability distributions relevant to radiowave propagation modelling 1 Introduction 2 Probability distributions 3 Gaussian or normal distribution 4 Log-normal distribution 5 Rayleigh distribution 6 Combined log-normal and Rayleigh distribution 7 Nakagami-Rice distribution (Nakagami n-distribution) (See Note 1) 8 Gamma distribution and exponential distribution 9 Nakagami m-distribution (see Note 1) 10 Pearson ?2 distribution