PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/12-17:28:10
G02     39.7           50.1                9.3 +/-    1.06      11.7 +/-    1.06  0.020 / 0.030
G05     118.0          69.5               10.5 +/-    0.43      11.1 +/-    0.43  0.030 / 0.020
G12     186.1          52.1               11.2 +/-    0.43      13.8 +/-    0.43  0.040 / 0.040
G25     271.9          59.3               10.4 +/-    1.72      11.9 +/-    1.72  0.050 / 0.050
G29     314.9          36.2               10.6 +/-    1.31      16.5 +/-    1.31  0.040 / 0.040