PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/30-08:43:10
G01     117.8          18.7                5.1 +/-    1.02      11.5 +/-    1.02  0.040 / 0.030
G07     85.7           65.1                6.5 +/-    0.62       7.1 +/-    0.62  0.030 / 0.030
G08     43.8           28.2                2.4 +/-    0.66       4.4 +/-    0.66  0.160 / 0.370
G09     173.1          19.7                6.0 +/-    2.48      13.4 +/-    2.48  0.170 / 0.260
G11     103.0          40.6                8.0 +/-    0.81      11.5 +/-    0.81  0.030 / 0.040
G13     316.8          20.9                1.8 +/-    1.85       3.9 +/-    1.85  0.030 / 0.030
G17     201.3          27.8                5.4 +/-    1.51       9.9 +/-    1.51  0.170 / 0.300
G18     91.0           21.2                4.7 +/-    0.82      10.0 +/-    0.82  0.090 / 0.270
G28     293.6          57.3                5.2 +/-    0.91       6.0 +/-    0.91  0.100 / 0.220
G30     345.4          68.7                4.2 +/-    0.92       4.5 +/-    0.92  0.110 / 0.210