PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/06-11:58:10
G01     68.9           32.7                4.6 +/-    1.11       7.6 +/-    1.11  0.030 / 0.030
G07     138.3          29.0                5.9 +/-    1.62      10.5 +/-    1.62  0.030 / 0.030
G11     51.9           28.8                3.8 +/-    1.53       6.8 +/-    1.53  0.050 / 0.080
G13     272.0          37.5                5.3 +/-    2.57       8.1 +/-    2.57  0.050 / 0.090
G15     305.8          12.9                2.2 +/-    1.47       5.9 +/-    1.47  0.070 / 0.100
G17     237.3          71.9                6.6 +/-    0.77       6.9 +/-    0.77  0.070 / 0.100
G18     46.9           16.6                3.4 +/-    2.28       8.2 +/-    2.28  0.080 / 0.090
G19     225.0          38.9                5.7 +/-    2.34       8.4 +/-    2.34  0.050 / 0.100
G28     20.9           59.2                5.8 +/-    1.45       6.7 +/-    1.45  0.130 / 0.190
G30     137.4          61.9                6.4 +/-    0.70       7.2 +/-    0.70  0.130 / 0.220