PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/30-21:57:50
G08     305.0          21.3                6.1 +/-    2.37      13.0 +/-    2.37  0.080 / 0.080
G10     340.0          61.1                8.1 +/-    0.78       9.1 +/-    0.78  0.070 / 0.090
G14     220.1          33.8               10.8 +/-    2.12      17.5 +/-    2.12  0.060 / 0.150
G15     47.6           11.5                7.5 +/-    2.07      20.2 +/-    2.07  0.070 / 0.150
G20     44.4           58.8                9.6 +/-    0.48      11.0 +/-    0.48  0.040 / 0.050
G21     137.8          53.1               11.2 +/-    0.64      13.6 +/-    0.64  0.040 / 0.070
G24     66.9           28.1                7.9 +/-    0.93      14.4 +/-    0.93  0.060 / 0.110
G27     271.5          36.5               11.7 +/-    1.35      18.1 +/-    1.35  0.090 / 0.110
G32     226.8          56.9               10.5 +/-    0.61      12.2 +/-    0.61  0.100 / 0.250