Calculation of Effective Earth Radius and Point Refractivity Gradient in UAE

Table 1

Values of 𝑑𝑁 not exceeded for different time percentages compared with ITU maps.

Time percentage	ITU values (N/km)	Obtained values (N/km)
1%	−952.42	−1029
10%	−553	−333.5
50%	−92.824	−108
90%	−4.38	63.6
99%	38.86	293.6