PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/30-01:58:10
G01     295.1          39.0                4.0 +/-    3.37       5.9 +/-    3.37  0.050 / 0.100
G03     310.2          12.3                2.2 +/-   18.93       5.9 +/-   18.93  0.060 / 0.100
G10     116.6          32.4                6.2 +/-    2.14      10.3 +/-    2.14  0.090 / 0.080
G11     267.5          27.8                6.8 +/-    1.43      12.5 +/-    1.43  0.060 / 0.080
G14     21.1           60.0                7.4 +/-    1.68       8.4 +/-    1.68  0.080 / 0.090
G22     312.8          34.5                3.6 +/-    2.16       5.8 +/-    2.16  0.070 / 0.100
G25     68.0           18.0                6.6 +/-    1.22      15.3 +/-    1.22  0.020 / 0.020
G31     157.5          75.1                6.5 +/-    0.77       6.7 +/-    0.77  0.030 / 0.030
G32     44.7           47.2                6.1 +/-    2.05       8.0 +/-    2.05  0.070 / 0.120