PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/16-06:27:40
G05     51.0           11.3                2.1 +/-    2.66       5.7 +/-    2.66  0.080 / 0.300
G10     239.5          15.9                5.7 +/-    0.64      14.0 +/-    0.64  0.100 / 0.320
G13     69.8           36.0                5.9 +/-    1.10       9.2 +/-    1.10  0.370 / 0.080
G15     114.3          55.0                5.5 +/-    0.62       6.6 +/-    0.62  0.470 / 0.190
G16     309.5          14.0                3.1 +/-    1.33       7.8 +/-    1.33  0.040 / 0.040
G20     302.7          74.7                5.4 +/-    0.73       5.6 +/-    0.73  0.040 / 0.040
G21     318.1          50.5                4.3 +/-    1.04       5.4 +/-    1.04  0.070 / 0.070
G26     281.1          20.1                2.8 +/-    1.34       6.1 +/-    1.34  0.050 / 0.060
G29     159.2          66.6                5.7 +/-    0.25       6.1 +/-    0.25  0.050 / 0.010