PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/19-19:28:00
G07     345.3          62.0               11.9 +/-    0.58      13.3 +/-    0.58  0.040 / 0.050
G08     92.9           51.6               12.8 +/-    1.01      15.8 +/-    1.01  0.040 / 0.040
G09     190.4          72.3               12.7 +/-    0.71      13.3 +/-    0.71  0.080 / 0.160
G11     143.0          15.5               11.1 +/-    3.24      27.3 +/-    3.24  0.080 / 0.160
G16     47.1           10.1                8.6 +/-    5.02      24.0 +/-    5.02  0.030 / 0.020
G23     156.6          40.6               12.0 +/-    0.77      17.2 +/-    0.77  0.030 / 0.030
G27     54.9           32.1               10.2 +/-    1.15      17.1 +/-    1.15  0.080 / 0.090
G28     237.6          27.5               12.4 +/-    1.65      22.9 +/-    1.65  0.090 / 0.110
G30     303.9          37.0               11.4 +/-    0.94      17.4 +/-    0.94  0.110 / 0.090