PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/03-00:42:30
G02     201.5          31.8               13.2 +/-    1.24      22.2 +/-    1.24  0.140 / 0.310
G06     165.6          64.3               13.8 +/-    0.97      15.1 +/-    0.97  0.170 / 0.310
G12     305.1          11.5                3.3 +/-   19.92       9.0 +/-   19.92  0.060 / 0.130
G17     27.5           55.5                7.9 +/-    0.69       9.3 +/-    0.69  0.060 / 0.110
G19     350.0          67.7                8.1 +/-    0.70       8.6 +/-    0.70  0.030 / 0.050
G24     302.6          35.6                9.3 +/-    0.89      14.6 +/-    0.89  0.030 / 0.050
G28     98.6           33.5                9.9 +/-    0.55      16.2 +/-    0.55  0.060 / 0.130