PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/07-14:27:40
G07     316.1          50.8               11.1 +/-    0.93      13.9 +/-    0.93  0.040 / 0.050
G08     120.0          46.3               12.4 +/-    0.67      16.4 +/-    0.67  0.040 / 0.050
G09     243.3          83.2               12.0 +/-    0.92      12.0 +/-    0.92  0.030 / 0.060
G16     43.6           15.2                7.6 +/-    2.47      18.9 +/-    2.47  0.040 / 0.050
G23     149.1          51.4               12.5 +/-    0.67      15.5 +/-    0.67  0.100 / 0.250
G27     68.4           36.3               10.1 +/-    1.78      15.6 +/-    1.78  0.110 / 0.120
G28     228.8          19.6               10.6 +/-    2.02      23.6 +/-    2.02  0.110 / 0.300
G30     292.4          27.3                9.2 +/-    2.17      17.0 +/-    2.17  0.150 / 0.300