PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/14-17:28:00
G01     319.4          16.7                4.5 +/-    1.56      10.9 +/-    1.56  0.040 / 0.070
G08     259.8          13.8                8.8 +/-    1.34      22.5 +/-    1.34  0.040 / 0.070
G10     77.0           54.5                6.1 +/-    0.88       7.3 +/-    0.88  0.140 / 0.200
G11     305.6          21.3                5.4 +/-    2.51      11.5 +/-    2.51  0.110 / 0.200
G14     291.2          69.9                5.5 +/-    0.51       5.8 +/-    0.51  0.030 / 0.030
G18     101.6          28.0                7.1 +/-    1.55      13.0 +/-    1.55  0.040 / 0.040
G31     176.9          40.1               10.5 +/-    1.13      15.2 +/-    1.13  0.040 / 0.050
G32     4.4            68.4                5.7 +/-    0.89       6.1 +/-    0.89  0.040 / 0.050