PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/14-07:42:30
G07     317.4          51.7                4.4 +/-    0.62       5.4 +/-    0.62  0.090 / 0.180
G08     114.9          46.7                8.9 +/-    0.73      11.7 +/-    0.73  0.130 / 0.140
G09     199.2          82.3                6.1 +/-    0.48       6.2 +/-    0.48  0.060 / 0.040
G16     43.6           15.4                2.5 +/-    1.89       6.1 +/-    1.89  0.030 / 0.050
G23     150.7          55.6                7.1 +/-    0.47       8.4 +/-    0.47  0.130 / 0.410
G27     69.6           36.9                5.1 +/-    0.99       7.8 +/-    0.99  0.130 / 0.370
G28     228.6          18.9                4.6 +/-    3.32      10.5 +/-    3.32  0.040 / 0.050
G30     291.7          26.0                5.1 +/-    1.51       9.8 +/-    1.51  0.040 / 0.050