PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/27-04:27:50
G07     344.1          62.0                4.6 +/-    0.82       5.1 +/-    0.82  0.080 / 0.090
G08     89.3           52.6                6.9 +/-    0.69       8.4 +/-    0.69  0.060 / 0.130
G09     179.8          65.0                5.2 +/-    0.41       5.7 +/-    0.41  0.050 / 0.040
G11     144.0          17.4                6.2 +/-    1.48      14.5 +/-    1.48  0.070 / 0.050
G23     157.3          35.3                5.5 +/-    0.61       8.6 +/-    0.61  0.140 / 0.290
G27     50.0           28.3                4.5 +/-    2.23       8.2 +/-    2.23  0.130 / 0.260
G28     239.5          26.7                5.7 +/-    2.21      10.7 +/-    2.21  0.030 / 0.030
G30     305.0          36.9                3.7 +/-    1.32       5.6 +/-    1.32  0.030 / 0.030