PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/28-08:13:10
G07     332.5          58.3                3.9 +/-    0.84       4.5 +/-    0.84  0.040 / 0.040
G08     110.3          51.1                7.8 +/-    0.67       9.7 +/-    0.67  0.050 / 0.040
G09     195.3          76.8                3.5 +/-    0.55       3.5 +/-    0.55  0.040 / 0.050
G11     148.3          11.9                0.9 +/-    2.93       2.4 +/-    2.93  0.040 / 0.090
G23     153.6          42.5                5.9 +/-    0.60       8.2 +/-    0.60  0.080 / 0.260
G27     58.6           33.3                4.2 +/-    0.90       6.9 +/-    0.90  0.080 / 0.250
G28     233.3          20.7                5.2 +/-    1.60      11.3 +/-    1.60  0.050 / 0.070
G30     299.2          32.7                4.2 +/-    1.82       7.0 +/-    1.82  0.040 / 0.080