PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/09-14:42:30
G02     202.2          27.5                9.8 +/-    1.83      18.0 +/-    1.83  0.130 / 0.220
G03     64.3           9.5                -2.9 +/-   36.53      -8.1 +/-   36.53  0.120 / 0.270
G06     167.2          62.7               12.1 +/-    0.51      13.5 +/-    0.51  0.050 / 0.090
G12     304.7          11.1               -1.8 +/-   18.19      -5.0 +/-   18.19  0.100 / 0.110
G17     33.7           51.2               11.0 +/-    1.23      13.7 +/-    1.23  0.190 / 0.210
G19     354.3          67.5               10.3 +/-    0.68      11.1 +/-    0.68  0.120 / 0.180
G24     305.0          33.8                7.9 +/-    1.53      12.9 +/-    1.53  0.030 / 0.040
G28     97.5           34.3               11.4 +/-    0.84      18.3 +/-    0.84  0.060 / 0.040