PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/10-17:28:00
G07     4.7            66.6               10.2 +/-    0.62      11.0 +/-    0.62  0.050 / 0.050
G08     72.0           52.0               10.8 +/-    0.46      13.3 +/-    0.46  0.040 / 0.060
G09     180.9          54.3               12.8 +/-    0.56      15.4 +/-    0.56  0.050 / 0.050
G11     134.5          24.5               15.5 +/-    2.71      30.6 +/-    2.71  0.040 / 0.050
G23     158.0          19.0               14.0 +/-    1.32      31.6 +/-    1.32  0.020 / 0.030
G27     42.1           19.9                8.5 +/-    1.61      18.7 +/-    1.61  0.030 / 0.040
G28     254.5          43.1               12.8 +/-    2.73      17.7 +/-    2.73  0.120 / 0.240
G30     317.6          48.5               10.1 +/-    0.56      13.0 +/-    0.56  0.110 / 0.170