PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/09-09:27:50
G07     330.8          57.7                3.5 +/-    0.87       4.0 +/-    0.87  0.130 / 0.340
G08     113.6          50.2                6.4 +/-    0.51       8.1 +/-    0.51  0.090 / 0.280
G09     202.7          78.8                4.8 +/-    0.78       4.9 +/-    0.78  0.040 / 0.090
G11     149.0          10.9                1.3 +/-   14.70       3.5 +/-   14.70  0.040 / 0.070
G23     152.6          43.4                5.3 +/-    0.89       7.3 +/-    0.89  0.050 / 0.060
G27     60.6           34.2                4.0 +/-    0.61       6.5 +/-    0.61  0.050 / 0.050
G28     232.2          19.6                6.6 +/-    3.62      14.7 +/-    3.62  0.060 / 0.090
G30     298.3          32.3                2.6 +/-    1.50       4.3 +/-    1.50  0.060 / 0.100