PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-16:12:40
G01     82.7           33.0                9.7 +/-    0.85      15.9 +/-    0.85  0.040 / 0.070
G07     130.8          40.1               10.5 +/-    0.88      15.2 +/-    0.88  0.040 / 0.070
G11     61.8           36.8                8.3 +/-    0.60      12.7 +/-    0.60  0.020 / 0.030
G13     287.0          37.5                9.0 +/-    1.56      13.6 +/-    1.56  0.030 / 0.040
G15     312.3          11.3                7.8 +/-    1.37      21.2 +/-    1.37  0.050 / 0.090
G17     220.0          58.8                8.8 +/-    0.99      10.1 +/-    0.99  0.060 / 0.110
G18     57.5           22.2                7.1 +/-    1.05      14.9 +/-    1.05  0.060 / 0.130
G19     217.9          30.4               11.0 +/-    2.14      19.1 +/-    2.14  0.050 / 0.120
G28     1.3            61.1                8.2 +/-    0.89       9.2 +/-    0.89  0.060 / 0.120
G30     120.6          71.5               10.8 +/-    0.76      11.3 +/-    0.76  0.060 / 0.120