PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/10-22:13:00
G02     50.6           40.5                7.8 +/-    0.49      11.2 +/-    0.49  0.020 / 0.040
G05     78.7           67.8                9.6 +/-    0.51      10.2 +/-    0.51  0.020 / 0.040
G12     184.5          41.5               11.9 +/-    1.42      16.9 +/-    1.42  0.030 / 0.060
G21     263.0          10.2               -3.9 +/-   18.96     -10.8 +/-   18.96  0.050 / 0.070
G25     254.5          57.3               10.5 +/-    0.73      12.3 +/-    0.73  0.050 / 0.050
G29     321.0          44.0                9.3 +/-    0.77      12.8 +/-    0.77  0.040 / 0.050