PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/06-15:57:20
G05     170.6          21.7                9.1 +/-    2.68      19.3 +/-    2.68  0.120 / 0.170
G06     40.1           49.3                7.7 +/-    0.69       9.8 +/-    0.69  0.120 / 0.180
G12     321.0          64.2                7.9 +/-    0.51       8.7 +/-    0.51  0.030 / 0.030
G17     77.9           16.6                7.0 +/-    1.73      16.6 +/-    1.73  0.030 / 0.030
G19     61.6           37.5                7.7 +/-    1.95      11.7 +/-    1.95  0.170 / 0.280
G24     234.9          29.5                9.7 +/-    1.70      17.1 +/-    1.70  0.280 / 0.180
G25     317.5          20.8                6.5 +/-    2.21      14.1 +/-    2.21  0.090 / 0.140