PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/12-16:58:10
G02     52.1           39.1                8.3 +/-    0.88      12.3 +/-    0.88  0.040 / 0.060
G05     75.0           68.2               10.3 +/-    0.50      11.0 +/-    0.50  0.050 / 0.080
G12     185.1          40.5               10.5 +/-    1.70      15.2 +/-    1.70  0.150 / 0.670
G21     265.5          11.8                8.4 +/-    3.03      22.6 +/-    3.03  0.200 / 0.680
G25     250.9          56.2                9.5 +/-    0.59      11.2 +/-    0.59  0.050 / 0.070
G29     323.4          47.2                7.9 +/-    1.09      10.3 +/-    1.09  0.080 / 0.080