PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/09-08:57:50
G05     50.0           13.4                1.4 +/-    1.73       3.7 +/-    1.73  0.070 / 0.210
G10     237.8          13.9                3.5 +/-    1.51       8.9 +/-    1.51  0.100 / 0.180
G13     73.2           36.6                5.7 +/-    0.89       8.8 +/-    0.89  0.040 / 0.040
G15     117.6          53.8                6.3 +/-    0.66       7.6 +/-    0.66  0.040 / 0.040
G16     312.6          12.8                3.1 +/-    2.05       8.1 +/-    2.05  0.040 / 0.060
G20     18.3           70.2                4.9 +/-    0.40       5.2 +/-    0.40  0.040 / 0.060
G21     316.7          49.8                3.5 +/-    0.85       4.5 +/-    0.85  0.050 / 0.090
G26     284.4          20.3                3.6 +/-    2.29       8.0 +/-    2.29  0.050 / 0.090
G29     157.0          68.4                6.5 +/-    0.58       7.0 +/-    0.58  0.300 / 0.470