PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/27-14:12:40
G02     201.1          14.6                4.5 +/-    3.37      11.3 +/-    3.37  0.110 / 0.250
G06     169.1          52.1                5.5 +/-    0.72       6.8 +/-    0.72  0.120 / 0.160
G13     229.3          15.3                6.1 +/-    1.45      15.2 +/-    1.45  0.100 / 0.090
G17     20.7           61.0                6.2 +/-    0.79       6.9 +/-    0.79  0.110 / 0.120
G19     299.0          69.8                4.9 +/-    0.68       5.1 +/-    0.68  0.120 / 0.350
G24     311.2          28.7                4.3 +/-    1.36       7.7 +/-    1.36  0.310 / 0.490
G28     83.7           41.8                4.8 +/-    1.10       6.8 +/-    1.10  0.040 / 0.040
G30     157.3          19.5                6.4 +/-    1.35      14.3 +/-    1.35  0.030 / 0.040