394 



CHARTS, GRAPHS, TABLES, AND COMPUTATIONS 



In tables 9.27 to 9.29 the following equations were used in determining 

 the various profile variables: 



AA^ = 7.32 exp (0.005577 A^.), 



Ce = hi 



N.. 



Ns + AN 



-dN, = CeNs, 



k = 



1 - -^ (ceNs) X 10-' 



Us 



ris = 1 + A^, X 10-«, 



where ro is taken as 6373.024987 km for all values of N s in these tables. 

 Table 9.29 was prepared using an iterative method for solution of 

 transcendental equations involved. In all these tables the accuracy may 

 be tak(m as ±1 in the last digit listed. 



Table 9.27. Parameters for exponential refraction with height for various values of Na 



