PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/12-02:27:40
G01     313.4          27.2                7.2 +/-    2.35      13.4 +/-    2.35  0.040 / 0.040
G10     95.4           47.1                8.9 +/-    0.38      11.6 +/-    0.38  0.050 / 0.040
G11     290.0          28.5                6.1 +/-    0.69      11.0 +/-    0.69  0.110 / 0.130
G14     338.9          70.1                7.0 +/-    0.49       7.4 +/-    0.49  0.110 / 0.130
G18     110.9          21.3                8.3 +/-    1.61      17.6 +/-    1.61  0.120 / 0.150
G22     305.8          18.6                7.5 +/-    0.73      17.1 +/-    0.73  0.110 / 0.130
G25     87.5           13.3                8.0 +/-    2.52      20.8 +/-    2.52  0.030 / 0.040
G31     174.8          53.5                9.4 +/-    0.90      11.4 +/-    0.90  0.020 / 0.040
G32     21.6           60.8                7.1 +/-    1.10       8.1 +/-    1.10  0.110 / 0.210