PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/18-11:27:30
G02     33.7           54.3                4.5 +/-    1.10       5.4 +/-    1.10  0.030 / 0.030
G05     147.2          60.1                7.8 +/-    0.26       8.8 +/-    0.26  0.020 / 0.030
G06     53.0           15.6                3.6 +/-    2.01       8.9 +/-    2.01  0.030 / 0.030
G12     191.5          66.8                5.7 +/-    0.44       6.1 +/-    0.44  0.030 / 0.030
G25     298.3          52.7                5.9 +/-    2.06       7.2 +/-    2.06  0.070 / 0.150
G29     305.9          26.4                5.7 +/-    0.84      10.9 +/-    0.84  0.160 / 0.120