PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/01-00:43:10
G02     200.8          28.5               11.8 +/-    1.42      21.3 +/-    1.42  0.040 / 0.040
G06     168.2          60.6               10.4 +/-    0.53      11.7 +/-    0.53  0.030 / 0.030
G17     24.0           57.9                7.3 +/-    1.10       8.4 +/-    1.10  0.060 / 0.080
G19     341.3          69.1                6.8 +/-    0.45       7.2 +/-    0.45  0.070 / 0.100
G24     305.6          33.6                6.6 +/-    1.62      10.8 +/-    1.62  0.050 / 0.100
G28     95.3           35.6                7.9 +/-    0.96      12.5 +/-    0.96  0.090 / 0.080