PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/01-17:43:10
G02     51.6           39.8                7.9 +/-    2.40      11.5 +/-    2.40  0.260 / 0.450
G05     74.1           67.8                8.8 +/-    0.33       9.4 +/-    0.33  0.240 / 0.490
G12     185.4          40.9                9.5 +/-    1.17      13.6 +/-    1.17  0.160 / 0.460
G13     132.3          10.0               -5.0 +/-   17.03     -13.8 +/-   17.03  0.060 / 0.090
G21     265.5          11.8                3.6 +/-   18.34       9.7 +/-   18.34  0.090 / 0.080
G25     251.0          56.2                7.9 +/-    1.60       9.3 +/-    1.60  0.060 / 0.080
G29     323.6          47.3                8.7 +/-    1.33      11.3 +/-    1.33  0.040 / 0.070