420 CHARTS, GRAPHS, TABLES, AND COMPUTATIONS 



Figure 9.22. Standard deviation of Ns, August 0200. 



Tables 9.36 to 9.44 



These tables show values of m and i in the regression equation 

 e = mN s + ^, where: 



e is the elevation angle error in milliradians to the height h, 



N s is the value of the radio refractivity at the earth's surface, 



m the change in elevation angle error per unit change in N s, 



t is the zero intercept, 



r is the correlation coefficient, 



SE is the standard error of prediction using the regression line, 



00 is the initial elevation angle in milliradians. 



Table 9.36. Variables in the statistical method of elevation angle error for h = 0.1 km 



