PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/23-18:43:00
G07     324.5          55.6               11.7 +/-    0.47      13.8 +/-    0.47  0.040 / 0.050
G08     114.1          47.0               14.4 +/-    0.56      18.8 +/-    0.56  0.040 / 0.060
G09     246.3          82.8               13.4 +/-    0.78      13.5 +/-    0.78  0.030 / 0.020
G16     43.3           20.6                9.1 +/-    2.67      19.7 +/-    2.67  0.030 / 0.030
G23     151.1          54.6               14.7 +/-    0.63      17.6 +/-    0.63  0.100 / 0.150
G27     69.6           37.1               11.6 +/-    0.97      17.8 +/-    0.97  0.060 / 0.050
G28     228.7          16.8               14.9 +/-    3.23      35.4 +/-    3.23  0.140 / 0.260
G30     293.5          28.6               10.3 +/-    1.22      18.7 +/-    1.22  0.190 / 0.310