PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/22-02:57:20
G02     37.0           52.2                6.5 +/-    0.52       8.0 +/-    0.52  0.020 / 0.030
G05     130.1          64.6                8.6 +/-    1.12       9.5 +/-    1.12  0.020 / 0.040
G06     55.3           13.8                3.6 +/-    2.14       9.1 +/-    2.14  0.030 / 0.050
G12     196.8          65.1                7.1 +/-    1.16       7.7 +/-    1.16  0.030 / 0.040
G25     293.9          54.3                7.6 +/-    0.75       9.1 +/-    0.75  0.030 / 0.050
G29     309.0          29.6                6.9 +/-    1.88      12.2 +/-    1.88  0.030 / 0.060