PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/11-08:42:40
G01     98.1           29.5                7.4 +/-    1.06      13.1 +/-    1.06  0.040 / 0.020
G07     118.8          50.3                7.8 +/-    0.62       9.8 +/-    0.62  0.050 / 0.020
G08     41.6           11.1                3.8 +/-    2.60      10.4 +/-    2.60  0.040 / 0.040
G11     75.3           41.3                6.3 +/-    0.93       9.0 +/-    0.93  0.040 / 0.040
G13     301.7          33.7                4.2 +/-    2.06       6.9 +/-    2.06  0.060 / 0.120
G17     209.2          48.8                9.2 +/-    1.08      11.8 +/-    1.08  0.060 / 0.100
G18     69.1           24.0                5.3 +/-    0.81      10.6 +/-    0.81  0.080 / 0.110
G19     212.1          17.2                7.8 +/-    1.55      18.4 +/-    1.55  0.060 / 0.130
G28     332.6          61.7                4.9 +/-    0.63       5.5 +/-    0.63  0.130 / 0.160
G30     62.6           80.5                7.5 +/-    1.12       7.6 +/-    1.12  0.090 / 0.340