PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/18-11:27:20
G02     33.7           54.3                4.6 +/-    0.46       5.5 +/-    0.46  0.030 / 0.050
G05     147.2          60.1                7.4 +/-    0.50       8.4 +/-    0.50  0.040 / 0.040
G06     53.0           15.6                3.0 +/-    0.54       7.3 +/-    0.54  0.020 / 0.040
G12     191.5          66.8                5.3 +/-    0.87       5.7 +/-    0.87  0.030 / 0.030
G25     298.3          52.7                4.1 +/-    0.68       5.1 +/-    0.68  0.030 / 0.050
G29     305.9          26.4                4.0 +/-    1.51       7.5 +/-    1.51  0.040 / 0.050