Table 5: 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 15˚ and 30˚ elevation angles.

MF Elevation angle 30˚ Elevation angle 15˚
min max mean rms min max mean Rms
SA 9.62 33.00 22.19 6.48 21.44 69.53 46.42 13.55
HO 18.14 60.19 35.93 10.46 35.93 116.39 69.48 20.21
BL 2.31 -121.18 -38.15 14.21 4.33 -232.23 -73.108 27.72
CH 9.83 33.39 22.47 6.56 19.89 64.60 43.49 12.69
IF 9.90 33.58 22.59 6.60 20.56 66.75 44.95 13.12
HE 9.90 33.59 22.60 6.60 20.58 66.87 44.95 13.12
NI 10.04 33.97 22.98 6.71 20.87 67.40 45.66 13.32
M0 9.83 33.37 22.45 6.56 19.92 64.69 43.56 12.71
B&E 10.06 34.02 22.91 6.69 22.02 70.69 47.74 13.92
UNBabc 9.91 33.60 22.61 6.60 20.67 66.88 45.07 13.15

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