PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/14-11:27:50
G01     68.0           32.6                4.1 +/-    1.14       6.9 +/-    1.14  0.030 / 0.030
G07     138.7          28.2                4.6 +/-    0.98       8.3 +/-    0.98  0.030 / 0.030
G11     51.3           28.1                2.2 +/-    0.64       4.0 +/-    0.64  0.050 / 0.120
G13     271.0          37.4                5.1 +/-    1.07       7.8 +/-    1.07  0.050 / 0.090
G15     305.3          13.0                1.1 +/-    1.31       2.8 +/-    1.31  0.130 / 0.340
G17     239.4          72.8                5.3 +/-    0.65       5.5 +/-    0.65  0.130 / 0.390
G18     46.2           16.1                1.3 +/-    1.51       3.1 +/-    1.51  0.040 / 0.050
G28     22.1           59.1                3.9 +/-    0.23       4.5 +/-    0.23  0.040 / 0.050
G30     138.2          61.2                6.7 +/-    0.66       7.5 +/-    0.66  0.070 / 0.110