PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/14-02:27:50
G08     271.2          20.2                8.9 +/-    1.80      19.5 +/-    1.80  0.140 / 0.330
G10     51.2           60.2                8.0 +/-    0.59       9.0 +/-    0.59  0.340 / 0.270
G14     254.7          61.6                8.2 +/-    1.04       9.2 +/-    1.04  0.130 / 0.210
G18     314.7          27.4                5.1 +/-    2.00       9.4 +/-    2.00  0.140 / 0.290
G20     53.1           65.8               10.0 +/-    1.22      10.8 +/-    1.22  0.120 / 0.110
G21     154.0          21.5                7.2 +/-    2.60      15.3 +/-    2.60  0.340 / 0.270
G24     41.2           12.5                5.4 +/-    1.74      14.4 +/-    1.74  0.040 / 0.050
G27     236.1          19.5                9.6 +/-    3.90      21.4 +/-    3.90  0.050 / 0.050
G31     177.8          26.7               10.4 +/-    2.18      19.5 +/-    2.18  0.160 / 0.230
G32     326.5          76.1                8.7 +/-    0.51       8.9 +/-    0.51  0.090 / 0.190