PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/30-18:12:40
G07     324.0          55.4                8.6 +/-    0.36      10.2 +/-    0.36  0.050 / 0.050
G08     115.2          46.6               12.4 +/-    0.86      16.4 +/-    0.86  0.030 / 0.040
G09     252.8          82.8                9.8 +/-    0.93       9.8 +/-    0.93  0.070 / 0.090
G16     43.2           20.8                6.1 +/-    2.45      13.2 +/-    2.45  0.090 / 0.250
G23     150.7          55.1               10.9 +/-    0.37      13.0 +/-    0.37  0.170 / 0.300
G27     70.2           37.2                9.5 +/-    0.84      14.4 +/-    0.84  0.240 / 0.250
G28     228.3          16.1               10.3 +/-    1.89      24.9 +/-    1.89  0.030 / 0.020
G30     293.1          28.4                7.6 +/-    0.76      13.7 +/-    0.76  0.030 / 0.030