PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/19-09:27:50
G08     272.3          20.3                6.6 +/-    1.34      14.4 +/-    1.34  0.120 / 0.170
G10     52.4           59.5                3.6 +/-    0.76       4.1 +/-    0.76  0.100 / 0.210
G14     255.8          63.7                5.4 +/-    0.62       5.9 +/-    0.62  0.030 / 0.030
G18     314.4          29.2                3.8 +/-    1.16       6.7 +/-    1.16  0.030 / 0.020
G20     90.1           40.0                3.7 +/-    0.79       5.4 +/-    0.79  0.050 / 0.050
G21     153.5          19.0                3.7 +/-    2.61       8.3 +/-    2.61  0.050 / 0.040
G24     41.6           12.7                1.4 +/-    3.17       3.6 +/-    3.17  0.030 / 0.030
G27     237.5          20.1                6.7 +/-    1.96      14.8 +/-    1.96  0.020 / 0.030
G31     179.9          24.2                4.3 +/-    1.47       8.7 +/-    1.47  0.120 / 0.210
G32     296.7          74.4                5.2 +/-    0.69       5.3 +/-    0.69  0.110 / 0.430