PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/04-15:42:40
G07     321.3          54.6                8.2 +/-    1.21       9.8 +/-    1.21  0.110 / 0.510
G08     120.8          44.6               11.2 +/-    0.34      15.2 +/-    0.34  0.100 / 0.450
G09     280.3          81.7                7.4 +/-    0.81       7.5 +/-    0.81  0.050 / 0.060
G16     42.8           21.7                6.1 +/-    1.43      12.8 +/-    1.43  0.040 / 0.060
G23     148.3          57.0               10.4 +/-    1.04      12.2 +/-    1.04  0.050 / 0.090
G27     73.8           37.4                7.8 +/-    0.45      11.8 +/-    0.45  0.060 / 0.080
G28     226.5          13.0                9.5 +/-    3.68      24.9 +/-    3.68  0.070 / 0.250
G30     291.3          27.5                7.7 +/-    1.67      14.3 +/-    1.67  0.080 / 0.260