Predicting the monthly cumulative distribution of the effective earth radius factor for South Africa

In previous work a model was developed to predict the annual average cumulative distribution of the effective earth radius factor, the k-factor, for telecommunications applications in South Africa. Long term meteorological radiosonde data from eight stations were used for this purpose. In this paper, the model is used to predict the cumulative effective earth radius, or k-factor, distribution for different months as a function of height. Comparisons between observed and predicted results are presented.