PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-08:12:50
G08     286.2          21.7                4.7 +/-    1.43      10.0 +/-    1.43  0.050 / 0.070
G10     28.3           62.7                5.7 +/-    0.53       6.3 +/-    0.53  0.050 / 0.100
G14     238.5          49.8                6.4 +/-    1.11       8.1 +/-    1.11  0.090 / 0.160
G18     317.4          17.2                3.6 +/-    2.30       8.5 +/-    2.30  0.110 / 0.110
G20     90.2           28.0                4.2 +/-    0.63       7.7 +/-    0.63  0.020 / 0.030
G21     150.7          31.2                5.6 +/-    0.89       9.6 +/-    0.89  0.030 / 0.070
G24     48.2           20.4                2.8 +/-    1.01       6.0 +/-    1.01  0.070 / 0.180
G27     244.4          26.1                7.9 +/-    1.32      15.0 +/-    1.32  0.060 / 0.150
G31     180.3          16.5                6.1 +/-    3.98      14.7 +/-    3.98  0.060 / 0.120
G32     277.9          75.6                7.4 +/-    0.85       7.6 +/-    0.85  0.050 / 0.130