PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/04-00:42:50
G02     51.0           39.8                8.1 +/-    0.60      11.8 +/-    0.60  0.070 / 0.080
G05     78.6           67.4                9.4 +/-    0.21      10.0 +/-    0.21  0.040 / 0.070
G12     186.1          43.4               13.0 +/-    1.89      18.0 +/-    1.89  0.110 / 0.260
G21     262.7          10.0               -7.1 +/-    9.42     -19.7 +/-    9.42  0.030 / 0.050
G25     257.0          57.4               11.4 +/-    1.10      13.3 +/-    1.10  0.030 / 0.040
G29     320.7          43.7               10.7 +/-    0.81      14.7 +/-    0.81  0.060 / 0.080