PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/03-15:57:30
G07     328.7          57.2                7.4 +/-    0.72       8.6 +/-    0.72  0.140 / 0.370
G08     114.1          47.7               10.3 +/-    0.96      13.4 +/-    0.96  0.160 / 0.320
G09     239.4          82.4                8.4 +/-    0.84       8.5 +/-    0.84  0.030 / 0.030
G16     43.8           17.5                5.5 +/-    0.76      12.9 +/-    0.76  0.040 / 0.030
G23     151.2          51.7               10.0 +/-    1.19      12.4 +/-    1.19  0.060 / 0.080
G27     67.4           36.5                7.9 +/-    0.63      12.2 +/-    0.63  0.070 / 0.080
G28     229.3          17.2                8.1 +/-    2.29      19.1 +/-    2.29  0.030 / 0.060
G30     295.2          30.6                7.7 +/-    1.09      13.4 +/-    1.09  0.040 / 0.050