PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/10-15:58:00
G07     303.2          44.3                9.0 +/-    1.23      12.3 +/-    1.23  0.050 / 0.090
G08     134.2          37.7               11.7 +/-    0.78      17.7 +/-    0.78  0.050 / 0.090
G09     310.5          75.7                9.0 +/-    0.46       9.2 +/-    0.46  0.110 / 0.180
G16     41.8           25.3                7.9 +/-    1.34      15.4 +/-    1.34  0.100 / 0.190
G23     140.4          61.5               10.5 +/-    1.28      11.7 +/-    1.28  0.030 / 0.050
G27     82.7           37.0                8.4 +/-    0.67      12.9 +/-    0.67  0.040 / 0.060
G28     222.7          10.3               -6.3 +/-   11.00     -17.5 +/-   11.00  0.200 / 0.000
G30     284.0          21.1                8.5 +/-    1.37      18.3 +/-    1.37  0.030 / 0.060