PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-05:57:30
G10     274.0          41.9                6.5 +/-    1.33       9.1 +/-    1.33  0.130 / 0.120
G13     39.5           13.6                3.8 +/-    2.78       9.7 +/-    2.78  0.100 / 0.130
G15     53.4           43.7                6.0 +/-    0.56       8.3 +/-    0.56  0.040 / 0.030
G20     8.1            65.6                5.2 +/-    0.82       5.6 +/-    0.82  0.040 / 0.030
G21     20.1           75.2                6.1 +/-    1.00       6.2 +/-    1.00  0.230 / 0.350
G24     114.8          17.8                6.0 +/-    1.68      13.9 +/-    1.68  0.150 / 0.390
G27     315.1          23.9                3.8 +/-    1.10       7.7 +/-    1.10  0.100 / 0.130
G29     168.7          25.1                6.1 +/-    0.79      12.0 +/-    0.79  0.100 / 0.160
G32     204.9          16.5                5.5 +/-    2.73      13.1 +/-    2.73  0.080 / 0.130