PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-08:42:50
G08     274.4          20.9                5.4 +/-    1.53      11.7 +/-    1.53  0.110 / 0.150
G10     48.9           60.0                5.5 +/-    0.79       6.2 +/-    0.79  0.110 / 0.190
G14     252.4          62.3                5.4 +/-    0.82       6.0 +/-    0.82  0.100 / 0.190
G18     315.1          27.4                2.9 +/-    2.09       5.3 +/-    2.09  0.110 / 0.250
G20     88.1           41.2                4.7 +/-    0.77       6.7 +/-    0.77  0.030 / 0.030
G21     153.1          21.2                6.7 +/-    1.78      14.2 +/-    1.78  0.030 / 0.030
G24     42.6           14.2                2.6 +/-    2.63       6.7 +/-    2.63  0.140 / 0.370
G27     238.8          21.3                6.0 +/-    3.05      12.8 +/-    3.05  0.270 / 0.220
G31     180.0          22.6                5.2 +/-    1.74      10.8 +/-    1.74  0.050 / 0.060
G32     291.0          74.3                6.8 +/-    0.60       7.0 +/-    0.60  0.060 / 0.060