PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/25-09:43:10
G08     284.9          21.1                5.8 +/-    2.17      12.3 +/-    2.17  0.040 / 0.070
G10     33.2           62.4                5.1 +/-    0.66       5.7 +/-    0.66  0.050 / 0.080
G14     241.4          52.6                8.9 +/-    1.79      10.8 +/-    1.79  0.080 / 0.150
G18     317.1          19.1                4.3 +/-    1.34       9.6 +/-    1.34  0.080 / 0.130
G20     96.5           16.0                4.6 +/-    1.41      11.2 +/-    1.41  0.030 / 0.030
G21     151.4          28.5                6.7 +/-    0.83      12.1 +/-    0.83  0.030 / 0.030
G24     46.7           19.3                2.8 +/-    0.93       6.3 +/-    0.93  0.080 / 0.150
G27     242.2          24.6                6.5 +/-    1.48      12.8 +/-    1.48  0.080 / 0.130
G31     179.8          18.5                5.6 +/-    1.35      12.7 +/-    1.35  0.090 / 0.420
G32     287.3          76.3                7.3 +/-    0.44       7.5 +/-    0.44  0.090 / 0.320