PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/19-06:42:40
G07     330.8          57.7                4.5 +/-    0.67       5.2 +/-    0.67  0.130 / 0.130
G08     108.8          50.8                9.0 +/-    0.56      11.2 +/-    0.56  0.100 / 0.130
G09     193.2          76.7                6.8 +/-    0.93       7.0 +/-    0.93  0.040 / 0.050
G11     149.0          11.5                6.3 +/-    3.73      17.0 +/-    3.73  0.040 / 0.050
G23     153.7          43.9                7.9 +/-    0.72      10.7 +/-    0.72  0.040 / 0.080
G27     59.0           33.4                5.1 +/-    0.82       8.4 +/-    0.82  0.040 / 0.070
G28     232.9          20.0                7.0 +/-    3.04      15.3 +/-    3.04  0.040 / 0.070
G30     298.4          31.7                4.2 +/-    1.08       7.2 +/-    1.08  0.040 / 0.070