PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/28-18:28:10
G07     329.1          57.2               11.8 +/-    0.48      13.8 +/-    0.48  0.050 / 0.040
G08     110.0          48.5               14.5 +/-    0.88      18.6 +/-    0.88  0.030 / 0.040
G09     223.7          81.7               12.0 +/-    0.28      12.1 +/-    0.28  0.110 / 0.320
G16     44.0           17.8                8.0 +/-    2.77      18.5 +/-    2.77  0.160 / 0.360
G23     152.6          51.3               14.2 +/-    0.44      17.7 +/-    0.44  0.050 / 0.020
G27     65.8           36.3               12.6 +/-    1.08      19.6 +/-    1.08  0.030 / 0.030
G28     230.4          19.1               15.2 +/-    1.86      34.2 +/-    1.86  0.060 / 0.050
G30     295.9          30.6               11.6 +/-    1.79      20.0 +/-    1.79  0.050 / 0.070