PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-16:28:10
G02     26.0           60.3                5.0 +/-    0.62       5.7 +/-    0.62  0.030 / 0.040
G05     148.6          58.9                7.7 +/-    0.60       8.8 +/-    0.60  0.030 / 0.050
G06     52.8           16.6                4.4 +/-    1.10      10.5 +/-    1.10  0.030 / 0.050
G12     194.6          68.3                5.4 +/-    0.58       5.8 +/-    0.58  0.030 / 0.050
G19     96.6           14.8                6.2 +/-    0.87      15.4 +/-    0.87  0.040 / 0.050
G25     297.8          54.0                5.8 +/-    1.16       7.0 +/-    1.16  0.040 / 0.050
G29     305.4          25.6                5.3 +/-    2.12      10.3 +/-    2.12  0.090 / 0.160