PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/18-02:27:50
G08     263.9          17.4                8.5 +/-    1.36      20.0 +/-    1.36  0.260 / 0.370
G10     65.3           57.3                6.8 +/-    1.04       8.0 +/-    1.04  0.230 / 0.290
G11     309.5          19.1                5.2 +/-    0.97      11.7 +/-    0.97  0.090 / 0.300
G14     270.1          66.5                7.1 +/-    0.74       7.6 +/-    0.74  0.100 / 0.260
G18     311.1          33.7                5.3 +/-    1.00       8.6 +/-    1.00  0.110 / 0.260
G20     66.0           64.8               23.3 +/-    0.84      25.5 +/-    0.84  0.080 / 0.210
G21     155.4          14.4                3.5 +/-    1.42       8.8 +/-    1.42  0.040 / 0.050
G27     230.4          14.6                8.4 +/-    1.85      21.2 +/-    1.85  0.040 / 0.060
G31     176.1          34.4                6.6 +/-    1.90      10.6 +/-    1.90  0.130 / 0.210
G32     352.5          72.4                7.2 +/-    0.61       7.5 +/-    0.61  0.140 / 0.180