PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/19-19:58:10
G07     318.1          51.7               13.6 +/-    0.79      16.8 +/-    0.79  0.050 / 0.060
G08     121.3          47.1               15.9 +/-    0.72      20.8 +/-    0.72  0.060 / 0.050
G09     242.6          82.5               14.9 +/-    1.17      15.0 +/-    1.17  0.320 / 0.300
G16     43.8           15.4                8.7 +/-    2.11      21.5 +/-    2.11  0.250 / 0.340
G23     150.1          50.0               15.0 +/-    0.62      18.9 +/-    0.62  0.370 / 0.450
G27     65.7           35.5               12.6 +/-    1.89      19.8 +/-    1.89  0.140 / 0.330
G28     230.0          21.5               19.1 +/-    2.42      40.6 +/-    2.42  0.040 / 0.060
G30     295.1          30.7               14.5 +/-    1.77      25.0 +/-    1.77  0.030 / 0.070