PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/28-15:57:50
G08     274.3          19.7                7.1 +/-    1.04      15.7 +/-    1.04  0.260 / 0.230
G10     49.9           60.7                6.5 +/-    1.10       7.4 +/-    1.10  0.100 / 0.380
G11     315.9          12.0                2.0 +/-   11.61       5.5 +/-   11.61  0.040 / 0.050
G14     255.2          61.8                8.3 +/-    0.69       9.3 +/-    0.69  0.040 / 0.040
G21     152.7          17.6                8.6 +/-    1.40      20.2 +/-    1.40  0.090 / 0.130
G24     42.5           14.6                5.4 +/-    3.79      13.5 +/-    3.79  0.080 / 0.110
G27     234.9          19.1                7.6 +/-    4.89      17.1 +/-    4.89  0.450 / 0.300
G31     179.4          24.9                8.7 +/-    1.94      17.0 +/-    1.94  0.270 / 0.460
G32     318.8          75.9                7.3 +/-    0.42       7.5 +/-    0.42  0.080 / 0.180