Table 7: 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 5˚ and 7˚ elevation angles.

MF Elevation angle 7˚ Elevation angle 5˚
min max mean rms min max mean rms
SA 30.39 108.05 72.18 21.08 24.05 115.64 76.52 22.47
HO 84.86 248.50 148.60 43.21 118.36 350.53 210.13 61.06
BL 7.78 -474.64 -149.15 55.68 9.63 -633.12 -197.99 74.21
CH 50.45 137.16 92.51 26.94 83.21 190.63 128.85 37.44
IF 57.03 157.96 106.57 31.04 99.61 242.27 163.81 47.67
HE 57.37 159.49 106.92 31.16 100.69 246.85 165.22 48.13
NI 55.65 158.67 107.94 31.43 87.64 246.97 165.69 48.18
M0 46.26 140 94.49 27.50 66.64 200.90 136.01 39.51
B&E 70.89 195.52 133.20 38.76 134.74 359.11 231.47 67.35
UNBabc 57.94 159.08 107.63 31.33 101.82 245.10 166.42 48.38