PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/04-07:42:40
G08     293.3          23.1                3.0 +/-    1.02       6.1 +/-    1.02  0.080 / 0.110
G10     10.5           62.8                3.2 +/-    0.65       3.5 +/-    0.65  0.100 / 0.120
G14     229.5          47.2                6.2 +/-    0.96       8.1 +/-    0.96  0.030 / 0.030
G18     317.7          11.5               -4.3 +/-   15.95     -11.6 +/-   15.95  0.030 / 0.030
G20     65.8           52.0                5.1 +/-    0.56       6.3 +/-    0.56  0.050 / 0.090
G21     146.6          39.1                6.6 +/-    0.88       9.8 +/-    0.88  0.070 / 0.110
G24     55.3           24.8                3.0 +/-    1.12       5.8 +/-    1.12  0.050 / 0.090
G27     255.8          31.9                5.9 +/-    1.30       9.9 +/-    1.30  0.060 / 0.090
G32     242.6          63.6                7.6 +/-    0.78       8.4 +/-    0.78  0.080 / 0.160