PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/11-09:27:50
G08     287.5          23.3                6.6 +/-    1.12      13.4 +/-    1.12  0.030 / 0.030
G10     21.2           62.6                5.4 +/-    0.97       6.0 +/-    0.97  0.030 / 0.020
G14     234.5          51.8                8.6 +/-    2.37      10.6 +/-    2.37  0.050 / 0.120
G18     317.6          16.2                4.3 +/-    1.90      10.5 +/-    1.90  0.060 / 0.100
G20     72.6           49.2                6.7 +/-    1.10       8.5 +/-    1.10  0.050 / 0.030
G21     148.6          33.3                8.5 +/-    1.35      13.9 +/-    1.35  0.030 / 0.030
G24     50.8           22.0                4.1 +/-    3.46       8.7 +/-    3.46  0.130 / 0.080
G27     251.0          29.3                7.7 +/-    1.59      13.8 +/-    1.59  0.100 / 0.070
G32     250.7          66.2                7.2 +/-    0.70       7.8 +/-    0.70  0.110 / 0.090