PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/19-00:58:10
G07     358.7          65.3                3.2 +/-    0.62       3.4 +/-    0.62  0.050 / 0.120
G08     75.0           51.9                5.1 +/-    0.85       6.3 +/-    0.85  0.050 / 0.090
G09     182.7          58.6                6.7 +/-    0.69       7.7 +/-    0.69  0.050 / 0.050
G11     137.3          21.9                6.5 +/-    0.95      13.7 +/-    0.95  0.040 / 0.050
G23     159.0          26.4                7.4 +/-    1.49      14.0 +/-    1.49  0.030 / 0.040
G27     43.6           21.7                2.3 +/-    0.97       4.9 +/-    0.97  0.030 / 0.040
G28     251.3          41.2                6.5 +/-    1.17       9.3 +/-    1.17  0.060 / 0.030
G30     316.6          47.9                3.5 +/-    0.73       4.6 +/-    0.73  0.040 / 0.040