Table 4: Mean and rms of the wet tropospheric delay errors of the differences between the delays computed using the mapping functions and the ray trace results at 45˚ and 60˚ elevation angles.

MF Elevation angle 60˚ Elevation angle 45˚
min max mean rms min max mean rms
SA 5.55 19.23 12.93 3.78 6.80 23.49 15.78 4.61
HO 10.41 34.74 20.73 6.03 12.77 42.28 25.38 7.38
BL 1.35 -70.10 -22.07 8.23 1.60 -86.08 -27.03 10.08
CH 5.60 19.26 12.95 3.78 6.89 23.59 15.85 4.63
IF 5.60 19.25 12.95 3.78 6.90 23.61 15.87 4.63
HE 5.60 19.25 12.95 3.78 6.90 23.62 15.87 4.63
NI 5.68 19.48 13.17 3.85 7.00 23.89 16.14 4.72
M0 5.60 19.25 12.95 3.78 6.89 23.58 15.85 4.63
B&E 5.60 19.27 12.96 3.79 6.94 23.72 15.95 4.66
UNBabc 5.60 19.25 12.95 3.78 6.90 23.62 15.87 4.64

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