PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/16-03:57:10
G02     50.0           40.3                4.1 +/-    1.04       5.9 +/-    1.04  0.050 / 0.020
G05     84.4           68.0                5.2 +/-    0.62       5.5 +/-    0.62  0.050 / 0.020
G12     188.4          47.5                6.4 +/-    1.18       8.3 +/-    1.18  0.030 / 0.010
G20     211.2          19.1                6.5 +/-    2.23      14.6 +/-    2.23  0.030 / 0.010
G25     262.9          57.8                7.4 +/-    0.53       8.6 +/-    0.53  0.180 / 0.460
G29     319.6          42.3                6.6 +/-    0.92       9.2 +/-    0.92  0.260 / 0.450