PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-08:27:50
G08     283.1          21.2                5.3 +/-    1.75      11.3 +/-    1.75  0.050 / 0.080
G10     35.1           62.2                3.9 +/-    0.42       4.4 +/-    0.42  0.050 / 0.080
G14     242.0          52.5                5.4 +/-    0.82       6.6 +/-    0.82  0.120 / 0.150
G18     316.9          19.9                4.0 +/-    1.54       8.8 +/-    1.54  0.110 / 0.220
G20     93.3           25.0                5.1 +/-    0.78      10.0 +/-    0.78  0.060 / 0.140
G21     151.7          28.0                5.8 +/-    3.01      10.7 +/-    3.01  0.060 / 0.130
G24     46.1           18.6                2.0 +/-    0.77       4.6 +/-    0.77  0.030 / 0.030
G27     241.7          24.2                4.8 +/-    1.04       9.5 +/-    1.04  0.030 / 0.030
G31     179.5          19.4                4.5 +/-    1.37      10.1 +/-    1.37  0.080 / 0.160
G32     291.5          76.6                5.1 +/-    0.34       5.3 +/-    0.34  0.090 / 0.170