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                7.9 +/-    1.38      11.7 +/-    1.38  0.270 / 0.430
G05     75.0           68.2               10.1 +/-    0.41      10.8 +/-    0.41  0.250 / 0.430
G12     185.1          40.5               10.7 +/-    1.22      15.5 +/-    1.22  0.160 / 0.470
G13     132.3          10.0               -4.4 +/-   20.20     -12.2 +/-   20.20  0.050 / 0.090
G21     265.5          11.8                3.0 +/-   18.40       7.9 +/-   18.40  0.050 / 0.080
G25     250.9          56.2                8.0 +/-    1.80       9.4 +/-    1.80  0.040 / 0.080
G29     323.4          47.2                8.7 +/-    1.08      11.3 +/-    1.08  0.060 / 0.080