PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/10-16:28:00
G07     319.0          52.1               10.1 +/-    1.11      12.4 +/-    1.11  0.050 / 0.060
G08     118.7          47.8               12.8 +/-    0.93      16.6 +/-    0.93  0.040 / 0.060
G09     229.3          82.3               11.0 +/-    1.09      11.1 +/-    1.09  0.110 / 0.250
G16     44.2           13.6                7.8 +/-    1.70      20.1 +/-    1.70  0.110 / 0.270
G23     149.9          47.1               11.4 +/-    0.63      14.9 +/-    0.63  0.030 / 0.060
G27     65.2           35.5                9.5 +/-    0.51      14.9 +/-    0.51  0.030 / 0.060
G28     230.4          21.9               13.4 +/-    1.07      28.3 +/-    1.07  0.070 / 0.190
G30     294.8          29.6                9.0 +/-    1.70      15.9 +/-    1.70  0.090 / 0.210