PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/29-14:58:10
G01     120.1          17.2                8.4 +/-    0.83      19.8 +/-    0.83  0.030 / 0.040
G07     77.2           67.2                8.0 +/-    0.56       8.5 +/-    0.56  0.030 / 0.040
G08     45.5           32.8                6.5 +/-    0.59      10.8 +/-    0.59  0.030 / 0.050
G09     176.4          26.2               10.0 +/-    1.31      19.0 +/-    1.31  0.030 / 0.040
G11     108.2          39.5                9.3 +/-    0.60      13.7 +/-    0.60  0.080 / 0.130
G13     318.2          18.6                8.1 +/-    2.14      18.5 +/-    2.14  0.080 / 0.120
G17     201.7          22.5               10.5 +/-    1.59      21.7 +/-    1.59  0.100 / 0.260
G18     95.4           20.4                8.3 +/-    0.71      18.2 +/-    0.71  0.090 / 0.260
G28     290.6          56.9                9.3 +/-    0.64      10.9 +/-    0.64  0.100 / 0.270
G30     344.0          67.4                8.4 +/-    0.87       9.1 +/-    0.87  0.120 / 0.240