PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/25-08:28:10
G08     288.7          23.2                6.1 +/-    0.83      12.5 +/-    0.83  0.070 / 0.130
G10     19.6           62.7                5.3 +/-    0.85       5.9 +/-    0.85  0.060 / 0.120
G14     233.6          51.0                7.5 +/-    2.26       9.4 +/-    2.26  0.090 / 0.120
G18     317.7          15.3                2.9 +/-    3.14       7.2 +/-    3.14  0.100 / 0.110
G20     71.6           49.6                5.0 +/-    1.05       6.4 +/-    1.05  0.030 / 0.020
G21     148.4          34.6                6.5 +/-    1.43      10.4 +/-    1.43  0.030 / 0.020
G24     51.6           22.7                4.2 +/-    2.29       8.8 +/-    2.29  0.070 / 0.120
G27     251.5          29.7                8.5 +/-    1.14      15.0 +/-    1.14  0.070 / 0.110
G32     249.9          66.5                6.9 +/-    0.51       7.4 +/-    0.51  0.110 / 0.170