PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-16:27:50
G07     338.5          60.2                9.8 +/-    0.86      11.1 +/-    0.86  0.080 / 0.110
G08     104.2          50.5               10.2 +/-    0.74      12.8 +/-    0.74  0.080 / 0.090
G09     204.1          78.3               10.9 +/-    0.47      11.1 +/-    0.47  0.030 / 0.040
G11     147.0          11.9               10.4 +/-    4.58      27.7 +/-    4.58  0.040 / 0.040
G16     45.5           12.5                6.8 +/-    2.73      17.9 +/-    2.73  0.150 / 0.190
G23     154.1          45.2               11.7 +/-    0.70      15.8 +/-    0.70  0.110 / 0.210
G27     60.2           34.4               10.2 +/-    1.75      16.3 +/-    1.75  0.200 / 0.260
G28     233.3          22.3               12.1 +/-    3.63      25.3 +/-    3.63  0.160 / 0.220
G30     300.2          34.6                9.2 +/-    1.12      14.7 +/-    1.12  0.060 / 0.080