RECOMMENDATION ITU-R P.1057 - 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)* 8. Gamma distribution and exponential distribution 9. Nakagami m-distribution* 10. Pearson ?2 distribution